*The Angi rating for Storm Shelter Service companies in Altadena, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Storm Shelter Service needs.
*The HomeAdvisor rating for Storm Shelter Service companies in Altadena, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Storm Shelter Service needs.
Last update on April 28, 2025
With 60 years experience, we create buildings of all types throughout California and the West. Although we specialize in new mid-century modern homes and businesses, we can work in any style. We have an office space in both Santa Cruz and Los Angeles. Please VISIT OUR WEB SITE at www.modern-architecture.com or CALL BILL at 831-246-0117.
"They were so helpful, knowledgeable, and accommodating. I made the process so much more enjoyable. And I look forward to working with them on future projects."
Laurel B on May 2020
With 60 years experience, we create buildings of all types throughout California and the West. Although we specialize in new mid-century modern homes and businesses, we can work in any style. We have an office space in both Santa Cruz and Los Angeles. Please VISIT OUR WEB SITE at www.modern-architecture.com or CALL BILL at 831-246-0117.
"They were so helpful, knowledgeable, and accommodating. I made the process so much more enjoyable. And I look forward to working with them on future projects."
Laurel B on May 2020
We are a full design build firm, specializing in kitchen, bathroom, and complete home remodeling. This also includes additions and ADU's! In the process of creating your dream home, our goal is to provide you with the most up-to-date ideas and solutions. A "one stop shop" for all your remodeling needs. Our team builds and remodels homes with various styles such as: traditional, Spanish, modern, contemporary and beyond. Call us today to get your in-home FREE consultation! Hand in Hand we will make this experience unique and successful. So let's make it Better together! Better Together Builders Lic#1047689 818-858-9840 Info@bettertogetherbuilders.com **Please note: Due to high demand, we are no longer able to do projects that are under a budget of $7000.**
"Stuff happens, and this business knows how to handle it! We had a stain on the ceiling. Ofri from BTB came over and turned on the water from the upstairs bathtub and then the shower stall. The ceiling became moist after the shower was turned on. Ofri then came back with a plumber. He turned on the upstairs bathtub. After they left, water dripped from the ceiling. Ofri had the plumber immediately send over a team for a service call. They broke open a hole in the ceiling and found that a pipe leading to the bathtub was so rusty it had holes. They took videos showing other pipes leading to the bathtub were also very rusty. While the team was still there, Ofri gave us prices, sent over the paperwork and the pipes were replaced within a of couple hours. Fabulous! Ofri had thought it would take a lot longer to complete the plumbing work. Therefore, her pricing did not align with the actual work performed. She brought in Alon, who substantially reduced the price to our satisfaction. Their responsiveness and reasonableness earned them my highest rating. Thank you Ofri, Alon and the BTB team!"
Barbara R on January 2025
We are a full design build firm, specializing in kitchen, bathroom, and complete home remodeling. This also includes additions and ADU's! In the process of creating your dream home, our goal is to provide you with the most up-to-date ideas and solutions. A "one stop shop" for all your remodeling needs. Our team builds and remodels homes with various styles such as: traditional, Spanish, modern, contemporary and beyond. Call us today to get your in-home FREE consultation! Hand in Hand we will make this experience unique and successful. So let's make it Better together! Better Together Builders Lic#1047689 818-858-9840 Info@bettertogetherbuilders.com **Please note: Due to high demand, we are no longer able to do projects that are under a budget of $7000.**
"Stuff happens, and this business knows how to handle it! We had a stain on the ceiling. Ofri from BTB came over and turned on the water from the upstairs bathtub and then the shower stall. The ceiling became moist after the shower was turned on. Ofri then came back with a plumber. He turned on the upstairs bathtub. After they left, water dripped from the ceiling. Ofri had the plumber immediately send over a team for a service call. They broke open a hole in the ceiling and found that a pipe leading to the bathtub was so rusty it had holes. They took videos showing other pipes leading to the bathtub were also very rusty. While the team was still there, Ofri gave us prices, sent over the paperwork and the pipes were replaced within a of couple hours. Fabulous! Ofri had thought it would take a lot longer to complete the plumbing work. Therefore, her pricing did not align with the actual work performed. She brought in Alon, who substantially reduced the price to our satisfaction. Their responsiveness and reasonableness earned them my highest rating. Thank you Ofri, Alon and the BTB team!"
Barbara R on January 2025
Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.
"The work Erdelyi associates did is great, but communication and timeliness were lacking. I didn’t have a consistent point of contact throughout the project - it just seems my project was handed off from one person to the next with no continuity and I had to proactively reach out for updates."
Stefan W on September 2022
Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.
"The work Erdelyi associates did is great, but communication and timeliness were lacking. I didn’t have a consistent point of contact throughout the project - it just seems my project was handed off from one person to the next with no continuity and I had to proactively reach out for updates."
Stefan W on September 2022
We are proud of our excellent reviews and Super Service Awards every year. We have no salespersons and you work directly with the contractor and owner. We specialize in kitchens, bathrooms, additions and new home construction. We are a family owned business and our quality and satisfaction is guaranteed. We have serviced the Los Angeles area for over 25 years and have references available upon request. Free estimates are available and remodeled kitchens and homes are available for you to see. Visit our website at www.mfcdesignsite.com or email us at info@mfcdesignsite.com for more information.
"Mike remodeled the upstairs of our condo five years ago and did such a great job that he was the only contractor we wanted for our downstairs kitchen and bathroom remodel. Once again he and his crew did a great job"
Ron M on March 2025
We are proud of our excellent reviews and Super Service Awards every year. We have no salespersons and you work directly with the contractor and owner. We specialize in kitchens, bathrooms, additions and new home construction. We are a family owned business and our quality and satisfaction is guaranteed. We have serviced the Los Angeles area for over 25 years and have references available upon request. Free estimates are available and remodeled kitchens and homes are available for you to see. Visit our website at www.mfcdesignsite.com or email us at info@mfcdesignsite.com for more information.
"Mike remodeled the upstairs of our condo five years ago and did such a great job that he was the only contractor we wanted for our downstairs kitchen and bathroom remodel. Once again he and his crew did a great job"
Ron M on March 2025
1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.
"We hired 1 Degree Construction for a room addition to give our growing family some extra space, and I honestly can’t say enough good things. From day one, Thai (our project manager) was on top of every detail—super communicative, easy to reach, and really made us feel like we were in good hands. The crew was respectful and professional, always cleaned up after themselves, and the quality of their work really speaks for itself. We now have a beautiful new bedroom and bathroom that looks like it was always part of the house. I was nervous about the process, but it was smooth, efficient, and finished in a timely manner. Wouldn’t hesitate to hire them again!"
Jonathan L on April 2025
1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.
"We hired 1 Degree Construction for a room addition to give our growing family some extra space, and I honestly can’t say enough good things. From day one, Thai (our project manager) was on top of every detail—super communicative, easy to reach, and really made us feel like we were in good hands. The crew was respectful and professional, always cleaned up after themselves, and the quality of their work really speaks for itself. We now have a beautiful new bedroom and bathroom that looks like it was always part of the house. I was nervous about the process, but it was smooth, efficient, and finished in a timely manner. Wouldn’t hesitate to hire them again!"
Jonathan L on April 2025
We Stand Behind Our Work, Quality, Brand and Commitment Located in San Jose, My Construction Group is your one source for construction needs, and quality design. Our experienced team and project managers will listen and help you focus on your goals, create an innovative design or renovate on matching your vision, and take all the worry and stress out of the process for you. Our team of professional contractors and project managers oversee and manage each project efficiently through on-site preparation, on-time scheduling, accurate budgeting and cost management. In addition, our goal is to assure quality building services while maintaining consistent client communication throughout each project. My Construction Group is a leading home remodeling company, interested in making the best and most remarkable construction in California. Please click or copy the link to see our new construction project https://youtu.be/1teqJZQhzBA
"This company remodel my bathroom and kitchen, the bathroom was not too bad apart from causing a leak and making a whole in the newly plastered kitchen ceiling and then tried to blame my gasman. The kitchen is a different story, after having the keys to my house for nearly 4 weeks when I wen to see the kitchen it was like a building site, the company have been back out 3 times and still a shambles, now refusing to answer any of my emails. The owner phoned and threatened to sue me. Avoid at all costs, I now have to go down legal route. Worst company I have ever dealt with. My advice stay away from this company."
Felicia H on April 2025
We Stand Behind Our Work, Quality, Brand and Commitment Located in San Jose, My Construction Group is your one source for construction needs, and quality design. Our experienced team and project managers will listen and help you focus on your goals, create an innovative design or renovate on matching your vision, and take all the worry and stress out of the process for you. Our team of professional contractors and project managers oversee and manage each project efficiently through on-site preparation, on-time scheduling, accurate budgeting and cost management. In addition, our goal is to assure quality building services while maintaining consistent client communication throughout each project. My Construction Group is a leading home remodeling company, interested in making the best and most remarkable construction in California. Please click or copy the link to see our new construction project https://youtu.be/1teqJZQhzBA
"This company remodel my bathroom and kitchen, the bathroom was not too bad apart from causing a leak and making a whole in the newly plastered kitchen ceiling and then tried to blame my gasman. The kitchen is a different story, after having the keys to my house for nearly 4 weeks when I wen to see the kitchen it was like a building site, the company have been back out 3 times and still a shambles, now refusing to answer any of my emails. The owner phoned and threatened to sue me. Avoid at all costs, I now have to go down legal route. Worst company I have ever dealt with. My advice stay away from this company."
Felicia H on April 2025
A COMPLETE EXPERIENCE- The Shenon Construction Team acknowledges that the path of remodeling is as important as the final product. Therefore, we strive to give our clients the most pleasant experience no matter how extensive the project may be. The team is present every step of the way, and is determined to help guide you with decision making, so that the final project meets and exceeds every expectation. A spectacular home and an ecstatic client are our two main priorities! COMMITMENT TO QUALITY- We proudly hold ourselves accountable to achieving the highest quality construction, utilizing durable materials and collaborating with highly skilled professionals. A SENSE FOR DESIGN- We communicate with our clients and have the ability to clearly understand the critical design elements. Prior to construction, we employ a 3D design to visualize your ideas and concepts. This way, we assure that the final execution is flawless. ATTENTION TO DETAIL- We realize that transforming a house into a home, and truly personalizing the project requires immaculate attention to detail. We embrace the uniqueness of each development and we call our projects complete when each of your needs and wants are fulfilled.
"5++ stars! My home's exterior was cracking due to a poor job prior and drainage issues. Tom and Adam and the team not only gave me peace of mind moving forward with drainage, put in gutters, and re-did the entire exterior of my home (stained wood and stucco), but made it beyond beautiful!! They were communicative, timely, so easy to work with, and the end product is gorgeous. I would recommend them to anyone who needs a construction project done and can't wait to use them again on my next project!!"
kim A on April 2025
A COMPLETE EXPERIENCE- The Shenon Construction Team acknowledges that the path of remodeling is as important as the final product. Therefore, we strive to give our clients the most pleasant experience no matter how extensive the project may be. The team is present every step of the way, and is determined to help guide you with decision making, so that the final project meets and exceeds every expectation. A spectacular home and an ecstatic client are our two main priorities! COMMITMENT TO QUALITY- We proudly hold ourselves accountable to achieving the highest quality construction, utilizing durable materials and collaborating with highly skilled professionals. A SENSE FOR DESIGN- We communicate with our clients and have the ability to clearly understand the critical design elements. Prior to construction, we employ a 3D design to visualize your ideas and concepts. This way, we assure that the final execution is flawless. ATTENTION TO DETAIL- We realize that transforming a house into a home, and truly personalizing the project requires immaculate attention to detail. We embrace the uniqueness of each development and we call our projects complete when each of your needs and wants are fulfilled.
"5++ stars! My home's exterior was cracking due to a poor job prior and drainage issues. Tom and Adam and the team not only gave me peace of mind moving forward with drainage, put in gutters, and re-did the entire exterior of my home (stained wood and stucco), but made it beyond beautiful!! They were communicative, timely, so easy to work with, and the end product is gorgeous. I would recommend them to anyone who needs a construction project done and can't wait to use them again on my next project!!"
kim A on April 2025
At Buildwright Construction we're fully licensed, insured and bonded to perform construction in the state of California. We specialize in designing and remodeling: Complete home remodeling, custom kitchen remodel, full bathroom renovation, ADU, garage conversions, home addition and more! A one stop shop for all your remodeling needs. Our clients get a full service and guidance from our team before, during and after the project is completed. We transform kitchens, redesign bathrooms, convert garages to ADUs, add new rooms and perform a full house remodel that help carve out new space, add functionality, style and user-friendliness. For our clients to get a unique and successful experience, we invest in educating our team adherence to the Los Angeles Building and Safety rules and regulations while implementing the newest technologies. We offer a fully inclusive client-focused construction management experience. We earn our clients trust by remaining true to our foundation, our capability to suit the varied needs, styes and preferences of our clients. We are working together to reach the best possible remodeling outcomes. On each of our projects we have a team of professional craftsmen and experienced project managers to allow a solid workflow that accommodates complete support and communications with our clients. Call us today to get your in-home FREE consultation!
"I recently had Buildwright Construction remodel my entire home, and I'm thrilled with the new look. They have a laid-back California style that's both cool & caring. There was a small mix-up with the paint in one room, but as soon as I noticed, the project manager took care of it. They came back quickly to repaint the room, making sure it fit perfectly with my home’s vibe. Even with that little hiccup, my home feels fresh, warm, and inviting. I appreciate how Buildwright Construction handled the mistake with care and professionalism. If you're looking for quality work with a genuine, down-to-earth touch, I highly recommend them."
Kristi S on February 2025
At Buildwright Construction we're fully licensed, insured and bonded to perform construction in the state of California. We specialize in designing and remodeling: Complete home remodeling, custom kitchen remodel, full bathroom renovation, ADU, garage conversions, home addition and more! A one stop shop for all your remodeling needs. Our clients get a full service and guidance from our team before, during and after the project is completed. We transform kitchens, redesign bathrooms, convert garages to ADUs, add new rooms and perform a full house remodel that help carve out new space, add functionality, style and user-friendliness. For our clients to get a unique and successful experience, we invest in educating our team adherence to the Los Angeles Building and Safety rules and regulations while implementing the newest technologies. We offer a fully inclusive client-focused construction management experience. We earn our clients trust by remaining true to our foundation, our capability to suit the varied needs, styes and preferences of our clients. We are working together to reach the best possible remodeling outcomes. On each of our projects we have a team of professional craftsmen and experienced project managers to allow a solid workflow that accommodates complete support and communications with our clients. Call us today to get your in-home FREE consultation!
"I recently had Buildwright Construction remodel my entire home, and I'm thrilled with the new look. They have a laid-back California style that's both cool & caring. There was a small mix-up with the paint in one room, but as soon as I noticed, the project manager took care of it. They came back quickly to repaint the room, making sure it fit perfectly with my home’s vibe. Even with that little hiccup, my home feels fresh, warm, and inviting. I appreciate how Buildwright Construction handled the mistake with care and professionalism. If you're looking for quality work with a genuine, down-to-earth touch, I highly recommend them."
Kristi S on February 2025
Los Angeles Premier design and build company specializing in home remodeling and construction. We are dedicated to delivering superior workmanship and ensuring complete customer satisfaction. Our team of highly skilled professionals works closely with clients to understand their unique needs and vision, providing custom solutions that are functional, stylish, and within budget. With exceptional communication and meticulous attention to detail, we guide our clients seamlessly from concept to completion. Contact us today to schedule your free in-home design consultation.
"We hired Paradigm Builders to remodel our kitchen and the results exceeded our expectations! Aviv was always available to answer our questions and delivered exactly what he promised. His team was professional, knowledgeable, and a pleasure to work with. We recommend Aviv and Paradigm Builders!"
Cohn R on April 2025
Los Angeles Premier design and build company specializing in home remodeling and construction. We are dedicated to delivering superior workmanship and ensuring complete customer satisfaction. Our team of highly skilled professionals works closely with clients to understand their unique needs and vision, providing custom solutions that are functional, stylish, and within budget. With exceptional communication and meticulous attention to detail, we guide our clients seamlessly from concept to completion. Contact us today to schedule your free in-home design consultation.
"We hired Paradigm Builders to remodel our kitchen and the results exceeded our expectations! Aviv was always available to answer our questions and delivered exactly what he promised. His team was professional, knowledgeable, and a pleasure to work with. We recommend Aviv and Paradigm Builders!"
Cohn R on April 2025
Awarded by J.D. Power, Construction Masters ™ is a family owned, full service, general construction company with 36 years of experience in Kitchen and Bathroom Remodeling, Garage Conversions (ADU), New Construction, Room Additions, Roofing, Painting, Flooring, Windows, Stonework and more. Licensed #762655 & #623586, Bonded #SC1025172 and Insured #1454306. Construction Masters ™ has gained a reputation for excellence as one of California’s most respected construction firms as well as an industry leader within the residential, corporate and restaurant/retail construction markets. Contact us and make your dream a reality! Corporation - Moshe Cohen Inc.
"Moshe, Mickey and the guys at Construction Masters did a stellar job on our huge home remodel. We added a second story to our small 2-1 craftsman bungalow in Westwood, nearly doubling it in size. We also moved a kitchen and living room wall and completely gutted our very old kitchen. We basically rebuilt the entire home, while doing out best retain and restore the character of our older home. We had tried to start this process over a few years, running into snags and unethical contractors along the way, and are so happy that we landed in the capable hands of this team. At every step along the way, we felt honestly communicated with and cared for on a personal level. They were top notch as well as courteous and considerate of our neighbors. Not only did they do a remarkable job and make our house the talk of the neighborhood, they went above and beyond to really be sure we were always 100% happy with all of the work being done. Even with the pandemic hitting right in the middle of our project, they managed to finish within our original timeline as promised. I would without a doubt recommend them for any project you have."
Michael S on April 2021
Awarded by J.D. Power, Construction Masters ™ is a family owned, full service, general construction company with 36 years of experience in Kitchen and Bathroom Remodeling, Garage Conversions (ADU), New Construction, Room Additions, Roofing, Painting, Flooring, Windows, Stonework and more. Licensed #762655 & #623586, Bonded #SC1025172 and Insured #1454306. Construction Masters ™ has gained a reputation for excellence as one of California’s most respected construction firms as well as an industry leader within the residential, corporate and restaurant/retail construction markets. Contact us and make your dream a reality! Corporation - Moshe Cohen Inc.
"Moshe, Mickey and the guys at Construction Masters did a stellar job on our huge home remodel. We added a second story to our small 2-1 craftsman bungalow in Westwood, nearly doubling it in size. We also moved a kitchen and living room wall and completely gutted our very old kitchen. We basically rebuilt the entire home, while doing out best retain and restore the character of our older home. We had tried to start this process over a few years, running into snags and unethical contractors along the way, and are so happy that we landed in the capable hands of this team. At every step along the way, we felt honestly communicated with and cared for on a personal level. They were top notch as well as courteous and considerate of our neighbors. Not only did they do a remarkable job and make our house the talk of the neighborhood, they went above and beyond to really be sure we were always 100% happy with all of the work being done. Even with the pandemic hitting right in the middle of our project, they managed to finish within our original timeline as promised. I would without a doubt recommend them for any project you have."
Michael S on April 2021
One starting point to find a local home builder is to collect suggestions from friends and neighbors. However, it’s still wise to do some more research before you hire a builder. Read reviews to supplement any word-of-mouth recommendations. Check sources like Angi that have standards and criteria in place to screen the pros it lists can also help you find more reputable local home builders.
The cost to remodel a basement is between $12,100 and $33,400 for the average homeowner. The price you pay can be as little as $3,500 or as much as $50,200, depending on the size and condition of your basement and the type of remodel you're doing.
If you're doing a simple project like adding a home office to your basement, you can expect to pay anywhere from $500 to $3,000. However, if you're adding a bathroom, which is an extensive project, you can expect to pay between $6,600 to $16,500.
Yes, most states require home remodeling contractors to be licensed, and for good reason. Hiring an unlicensed home remodeling contractor could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
The average cost to enclose a patio to create a sunroom is around $5,000, and prices generally range from $3,000 up to $10,000. The price you pay will depend on the state of your patio and whether it needs repairs or additional structural support, the quality of the materials you choose, the size of your patio, and whether you plan to run utilities into and finish the sunroom. The price for a fully finished patio enclosure could run up to around $20,000, while you might pay just $2,500 for a screened-in porch.
The cost to build a detached garage for two cars costs about $26,400 on average. Prices range from $19,200 to $33,600, depending on your location, the garage size, height, materials, and site prep required. Additional cost factors include any plumbing, electrical wiring, and insulation. If you need to build a concrete foundation for a new detached garage, you can expect to pay $1,000 to $8,600 for this essential addition.