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Grennan Construction

Roofing, Siding, Deck Maintenance

About us

Grennan Construction has earned a reputation for honesty and integrity for over 20 years. We specialize in residential roofing, siding, and exterior remodeling. Employees of our licensed and insured company will treat you like family – providing a free estimate, and delivering prompt, courteous, and honest service. We are professional, neat, and efficient. We will follow up your project with a comprehensive customer satisfaction survey to ensure that we fulfilled every commitment and that you are 100% satisfied with the end result. We hope to hear from you soon. www.GrennanConstruction.com

Business highlights

26 years of trusted experience
Family Owned & Operated

Services we offer

Roofing, gutters, siding, James Hardie Fiber cement siding, vinyl siding, windows.

Services we don't offer

We are not offering repair or handyman services at this time. Thank you.

Amenities

Free Estimates
Yes
Warranties
Yes
Senior Discount

5%



Accepted payment methods

Check
MasterCard
Visa

Photos of past projects

Reviews

4.7323 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
83%
4
7%
3
2%
2
4%
1
4%


Rating CategoryRating out of 5
quality
4.7
value
4.8
professionalism
4.7
responsiveness
4.6
punctuality
4.7
Showing 51-75 of 323 reviews

Jamie B.
10/2019
5.0
siding
  + -1 more
Fantastic. Project finished early and for a great price
Description of Work: Exterior siding

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,600

Response from Grennan Construction
Hello, Thank you for taking the time to leave a review. I'm glad we could help you with your project. The Grennan Family

ava J.
09/2019
5.0
chimney caps, chimney repair
  + 0 more
Great working with the pros at Grennan. Top quality job at fair price. Rebuilt entire chimney on 12/12 roof. Professional and knowledgeable. they made the chimney structure stronger than when new. i will have them back for addtional work next year
Description of Work: rebuilt chimney chase

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
4.0
punctuality
5.0

Yes, I recommend this pro

Response from Grennan Construction
Hello, Thank you for taking the time to leave a review. Your chimney project was a bit channeling and we enjoy those types of jobs. We greatly appreciate your business and hope you have a great day. The Grennan Family

Beth J.
09/2019
5.0
gutter repair, masonry, siding
  + 1 more
We used Angie’s list to pick a few highly rated firms to redo the entire outside of our home. They all offered the high quality products we wanted, and two of indicated that they would have a somewhat similar cost. We chose Grennan in part because Fred was not a high pressure sales person, he seemed business-like, quietly confident, and trustworthy. He also worked with us to develop a contract that clearly stated what would and would not be done, and in our case where we wanted three different treatments in different areas of the house, also clearly stated what would be done where. Of course it was impossible to know what was under the current siding so he set up a clear and fair rate for repair work should it be needed. We had a small section of our home done in stone and Grennen subcontracted that to a mason named Eric who did very good work. It is more of an artistic product than one might imagine to do the rounded rock we chose, and the gentlemen did a fine job on both the structural and the artistic aspects. We then had “Chris’s crew” do the bulk of the siding work and they were great. They arrived promptly, worked steadily and did high quality work for us. Despite every effort being made to have a clear and complete contract there are always small choices that must be made in any moderately complex house design. Chris was always happy to explain and discuss and would do the extra work to make it look great, rather than take the easy way. All three members of the crew were unfailingly polite and friendly. I do not know if you can specifically request Chris, or Eric but you might want to try. Adam was our project’s manager and he was also unfailingly polite and always sought to be sure we were well taken care of. The gutters were also subcontracted and the team from downriver did a fast and very good job. Our home is especially difficult because we have rain barrels in the summer and underground drains in the winter, but these folks were unphased by this challenge and got the job done well and on schedule. We also had two small crews come out to do shutters after the siding was up. They were nice people and did their jobs well and quickly. When it was all over the house looked spectacular and we have had many compliments. All the details like remounting lights and drier vents and the like were done well. We were totally happy. One bit of advice. You should not be surprised that doing good work for a fair price, Grennan is “in demand’. There is a backlog of work at least in the spring and summer, so unless you are having your work done in a slow season be sure to leave a couple months for your project to reach the top of the list and for all the materials to come in. If you plan ahead this is not an inconvenience, if you do not plan ahead you might be frustrated by having to wait.
Description of Work: Residing, gutters, and stone work

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$49,000

Response from Grennan Construction
Hello, Thank you for taking the time to leave a review. Your house looks amazing with the stone and siding you chose. We greatly appreciate your business and hope you have a great day. The Grennan Family

Peter B.
08/2019
5.0
roofing
  + -1 more
Very good, very clean, very professional and I was very happy with the work.
Description of Work: They installed my roof.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,000

Response from Grennan Construction
Hello, Thank you for taking the time to leave a review. We greatly appreciate your business and hope you have a great day. The Grennan Family

Cindy G.
08/2019
5.0
insulation, roofing, skylights
  + 1 more
From the first inspection until the completion of the job, we were treated as valued customers. The professionalism with which each stage was handled went far beyond what was expected. Even as supplies were delivered, dumpsters placed for the tear-off roof, scaffolding and ladders erected, etc., the workers took care to protect landscaping and access for the family. Fred Grennan's knowledge of roofing materials, electrical fans, venting, and insulation helped us immensely. Needless to say, we were and still are very pleased.
Description of Work: Roofing

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from Grennan Construction
Thank you very much the taking the time to leave a review. It was such a pleasure to work for you and your husband. I hope all is well with your family. Regards, The Grennan Family

Chronda S.
08/2019
5.0
gutter repair, insulation, roofing, skylights
  + 2 more
The process was completely explained and the job was performed efficiently with a very clean work site. Most importantly the work hold up over time.
Description of Work: Roofing

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from Grennan Construction
Hello, Thank you for the review. I appreciate our long term relationship and hope to continue working for you in the future. Regards, Fred

Marianne W.
08/2019
4.0
masonry, siding
  + 0 more
Installers were great and I’m very pleased with results
Description of Work: Siding

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
4.0
responsiveness
4.0
punctuality
4.0

Yes, I recommend this pro
$30,000

Response from Grennan Construction
Hello, Thank you for taking the time to leave a review. We greatly appreciate your business and hope you have a great day. The Grennan Family

Nandesh M.
07/2019
5.0
gutter cleaning, gutter repair, roofing
  + 1 more
I have been working with Fred for a long time. Always appreciate their workmanship and quick response. Price is reasonable and they get the job done correctly. Even if not done what you like, they will listen and redo the work until you satisfy. Thanks Fred.
Description of Work: Various projects

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,000

Response from Grennan Construction
Hello, Thank you for the review. I appreciate our long term relationship and hope to continue working for you in the future. Regards, Fred

Todd F.
07/2019
5.0
roofing, house painters
  + 0 more
Fair Price, Quality work, they did exactly what they said they would do. Clean up was excellent, no mess left.
Description of Work: Exterior Painting

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from Grennan Construction
Thank you for taking the time to leave a review - We greatly appreciate your business and hope to help you with more projects in he future.

Brandon L.
06/2019
5.0
gutter repair
  + -1 more
Not only is Fred Grennan (the owner) always courteous and professional, but his employees echoed the same qualities. I recommend Grennan all the time! I plan to hire them for more jobs in the near future!
Description of Work: We had gutters installed

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,800

Response from Grennan Construction
Thank you for taking the time to leave a review - We greatly appreciate your business and hope to help you with more projects in he future.

Gina G.
06/2019
5.0
gutter repair, insulation, roofing, roof cleaning
  + 2 more
Couldn’t be more pleased. Job was completed ahead of schedule. Their work is superior. All interactions with company were great, friendly , honest and priced right! Overall, I will be using this company for future projects for my home!!
Description of Work: Roofing, gutters and insulation

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Laura S.
04/2019
5.0
gutter repair, siding, pavers, gravel
  + 1 more
They were excellent and I enjoyed working with them. They responsive, Knowledgeable and helpful on making a decision on making final appearance and trying to achieved and bring kind of examples. If we have questions the owner or one of the supervisor will come to the place. They gave us a good quote and the price was good. I'm really happy with their work and crews.
Description of Work: They did siding, Stone work, Wood ramp re building and They did a gutter installation.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Jennifer S.
04/2019
5.0
siding
  + -1 more
It was excellent. We will certainly use them again in the future. I referred them to my friends and definitely recommend them to other people.
Description of Work: They removed wood siding and they replaced hardwood on it.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$25,000

Response from Grennan Construction
You have been a customer of ours for over 15 years and I cannot thank you enough for everything over the years. I hope you and your family are doing well. Hope to see you sooner than later. Tell everyone I said hello.

Tom & Stephanie R.
04/2019
5.0
remodeling, roofing, siding
  + 1 more
It was excellent, wonderful and I highly recommend them to my friends and everyone.
Description of Work: They did roofing, siding and port addition.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$60,000

Response from Grennan Construction
Thank you for taking the time to leave a review - We greatly appreciate your business and hope to help you with more projects in he future.

BILL B.
04/2019
5.0
roofing
  + -1 more
They were prompt, efficient, professional and clean workers. we got the project finished ahead of schedule and to satisfaction all around. we are very well pleased of the work.
Description of Work: We had portions of the building that needed to be resided.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Derek D.
04/2019
5.0
gutter repair, insulation, siding
  + 1 more
Fred Grennan runs a really decent and fair company. We have used them for (3) projects on our house and all of them have worked out great. Projects were completed on time and on budget. Fred has good follow through and customer service. The crews Fred uses have experience and get the job done. Our experiences have all been positive. I wouldn't hesitate to use them again should the need arise. I have recommended Grennan Construction to my Neighbor and my sibling and their projects worked out fine too.
Description of Work: Siding, Gutters, Soffits and Exterior Insulation and House Wrap

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro

Ryan F.
04/2019
2.0
replacement windows
  + -1 more
The crew on the jobsite was very good and the initial salesman was very good and very knowledgeable. But the communication within the company was bad, between the owner, salesman and Foreman. When I initially met the salesman, it was verygood. I explained the project, he listened and we are on the same page. But when the crew came out, they did not know what to do, because the internal communication was bad. The owner was challenging to deal with, he was abrasive, he was just difficult to deal with. They were still able to complete the job and I am happy with the end result. it's just the pain in completing it.
Description of Work: Window replacement and house sidings .

Rating CategoryRating out of 5
quality
3.0
value
4.0
professionalism
2.0
responsiveness
3.0
punctuality
4.0

$4,000

Jeffery S.
02/2019
3.0
siding
  + -1 more
I hired Grennan Construction to replace the siding on most of the house. I had received bids from several other contractors. Many of them wanted twice as much as Fred. I went with Fred because he had *mostly* good reviews on Angies list and was also rated as an “elite preferred” installer on the James Hardie website. He also had the lowest bid. He wanted only $12,100 to do most of my house where others contractors wanted $30,000 to do the whole house. The final product was good. It was not excellent. Caulk was missing in spots, and the color of some caulk that was applied at the end that did not match the siding (They sent someone out to fix these items later on). One trim board above my garage door was noticeably wider than another trim board right next to it. There was a lot of brad nails used at the bottom of some siding and on trim boards. I asked that the brad nails be covered with touch up paint but they were not. I do not know why they bottom nailed in places but I don’t think Hardie is supposed to be top and bottom nailed. Clean up was so-so. I’m still finding cigarette butts, caulk tube tips, and pieces of siding in my lawn. There was also debris on my roof that I had to request they come back and remove. I would give Fred a “B” if not for the various other customer services issues. The short end of it is that he did not do things that were said verbally or things actually written in the contract. In my opinion, he just didn’t pay a lot of attention to our project. The things he said he would do and did not is take pictures of the siding after it came off. When I arrived on the first day of work my siding was already mostly covered in house wrap. The foreman did not take any pictures, and they had put house wrap over sections of rotted sheathing. Adam our “project manager” arrived shortly thereafter and said the house wrap was temporary in case of rain and was attached with staples. This was just BS. The foreman had already told me before Adam arrived the wrap was meant to be permanent (except the chimney section of the house), and they used nails not staples. I quickly pointed this out and asked that the house wrap to remove so that sheathing could be replaced as was originally discussed with Mike. They ripped the house wrap off the house and then set it aside to reuse it. I asked to have brand new house wrap used and Fred initially charged me for this but later removed the charge when I pointed out the removed house wrap was torn in places and filled with nail holes. Another thing that was said that I find almost impossible to be true is that our project would be sub-contracted to a “hardie crew we have been working with for 5 years or more.” These were the words of Mike during his initial visit. Two of the crew members were only 21 years old. Adam actually met my foreman for the very first time when he came out to see the house wrap situation. Because of this, I find it very difficult to believe this was one of the crews Mike was referring to. Things that were in the contract but were not done include magnetically sweeping the house at the end of every day and making the house water tight at the end of every day. The magnet sweep was done at the end of the project. Sheathing was left exposed to the rain several nights during the 2 week project. Another thing that was written in the contract was that a Frieze board above my garage would be replaced with rough sawn cedar and painted. Fred replaced it with Hardie Trim boards without discussing it with us first. He did take money off the final invoice for this (after I brought it up to him) but I would have preferred the cedar trim. I want to give an honest and fair review, so I will say that the siding looks good. Furthermore, a handy man I trust that specializes in smaller siding projects stated he thought it looked like a quality job. However, we will not be hiring Fred again. Despite his advertising “100% customer satisificaton” he never once asked us if we were happy with the final outcome of our project.
Description of Work: Reside 3 out of 4 sides of my house

Rating CategoryRating out of 5
quality
4.0
value
5.0
professionalism
3.0
responsiveness
3.0
punctuality
2.0

$12,500

John P.
10/2018
5.0
siding
  + -1 more
Grennan Construction replaced the aluminum siding on our ranch with vinyl siding. Fred Grennan was professional from the beginning to end of the project. From helping us select the siding to the installation. The workmanship of the siding was excellent. Like all major projects, questions and concerns can arise during the job. But a simple phone call or text and Fred took care of it. This is the second major exterior undertaking we have had Grennan Construction handle at our home. The first being our roof. Both projects have added to the home's appearance and value. I would recommend Grennan Construction for any exterior project.
Description of Work: Vinyl Siding

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$17,000

Response from Grennan Construction
Thank you!!!! You are such a pleasure to work with once again. Enjoy the year with your new siding.

Jeff M.
08/2018
5.0
gutter repair, roofing, siding
  + 1 more
Everyone was Professional, efficient, reliable, timely and caring. We would definitely hire them again and will recommend them to anyone who asks.
Description of Work: Removed old cedar siding throughout the whole house & replaced with Hardieboard Siding.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from Grennan Construction
It was a pleasure working for you and your wife. I love the before and after pictures of your house...what a transformation. The Crew also wanted to thank you for the food and drinks while working on your home. It's always nice to work for a Homeowner that truly appreciates the work we do. Thank you, Fred and the Grennan Team

Mary H.
11/2017
5.0
roofing
  + -1 more
Excellent work. Got a quote quickly. They kept me informed on when the work would start and quickly replaced my roof in 2 days.
Description of Work: Roof replacement

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$9,000

Daniel M.
10/2017
5.0
roofing
  + -1 more
They did great work at a great price and got it done quickly - well done Grennan!
Description of Work: Replaced old roof on house and garage

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,500

Susan W.
09/2017
5.0
gutter repair, roofing, siding, replacement windows
  + 2 more
Pretty well. There was a glitch in the siding labor estimate but the company resolved it satisfactorily and quickly.
Description of Work: Siding, windows and roof

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Audrey G.
08/2017
5.0
insulation
  + -1 more
He came right out. I didn't get any other quotes.
Description of Work: They came out and gave me an estimate on doing some work but I did not have it done. It was for venting. One was for insulation.

Rating CategoryRating out of 5
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,400

Carol R.
08/2017
5.0
roofing, chimney repair
  + 0 more
They had to rebuild part of the chimney and tear off and replace the shingles. Extremely satisfied and have recommended them to a few people who also had similar problems like me and Grennan Construction solved the, They also offer a 2 year warranty.
Description of Work: I had a leak from the kitchen ceiling for several years. It leaked only when we had a torrential rain so I tried a different contractor once a year with bad results. They would recaulk or fix the flashing by the chimney and it would still leak. I called Grennan Construction. They were the only ones to diagnose the problem and REALLY fix it. Fred the owner came out and then I dealt with Terry. They were professional in every way. They inspected their work. They cleaned up afterwards and we have not had a problem since. We have had several heavy rain storms too.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,600

Contact information

917 Orchard Lake Dr, Pontiac, MI 48341

http://www.grennanconstruction.com

Service hours

Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM

Licensing

Insured

Licensed*

Trade License Number
2102154879
Trade License Locale
Michigan
Trade License Authority
Michigan: Contractors
Trade License Expiration
05/31/2026

Eco-friendly Accreditations

LEED Accredited Professional
No
Energy Star Partner
No
EPA Lead-Safe Certified
Yes
Use Green Products or Work Practices
No
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Roofing,
Siding,
Deck Maintenance

FAQ

Grennan Construction is currently rated 4.7 overall out of 5.

Monday: 8:00 AM - 5:00 PM

Tuesday: 8:00 AM - 5:00 PM

Wednesday: 8:00 AM - 5:00 PM

Thursday: 8:00 AM - 5:00 PM

Friday: 8:00 AM - 5:00 PM

Grennan Construction accepts the following forms of payment: Check,MasterCard,Visa
Yes, Grennan Construction offers free project estimates.
Yes, Grennan Construction offers eco-friendly accreditations.
Yes, Grennan Construction offers a 5% senior discount.
No, Grennan Construction does not offer emergency services.
Yes, Grennan Construction offers warranties.
Grennan Construction offers the following services: Roofing, gutters, siding, James Hardie Fiber cement siding, vinyl siding, windows.
We are not offering repair or handyman services at this time. Thank you.

Contact information

917 Orchard Lake Dr, Pontiac, MI 48341

http://www.grennanconstruction.com

Service hours

Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM