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

27 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

4.7326 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

Filter reviews by category

Showing 126-150 of 326 reviews

Kristin H.
10/2015
5.0
gutter cleaning, roofing
  + 0 more
Everything went great. Service went off without a hitch and they were willing to replace lost shingles on roof--other companies would not do at all since it wasn't a big job. Great company to work with
Description of Work: Gutter cleaning and roof inspection

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
$99

Response from Grennan Construction
We are so happy to hear that you were pleased with your recent service and thank you for taking the time to leave a review. Please keep us in mind for any and all of your exterior remodeling needs. Regards, The Grennan Construction Team

Mike M.
10/2015
5.0
masonry, roofing
  + 0 more
He was very thorough, pointing out the problem areas and repairing the things he could.
Description of Work: Inspected the roof, fixed flashing, piper boot, sealed exposed nail heads and lifting shingles

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
$119

Response from Grennan Construction
[Member name], Thank you for taking the time to share & review your experience. Please keep Grennan Construction in mind for all of you exterior remodeling needs. Regards, The Grennan Construction Team

Toni D.
07/2015
5.0
gutter cleaning, gutter repair, roofing
  + 1 more
It went very well. Terry was very professional. I would use them again.
Description of Work: Clean Gutters

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
$99

Dyan H.
07/2015
5.0
roofing
  + -1 more
Service was provided as expected. I felt some degree of pressure for additional sales/services; to purchase gutter guards and roofing, which I believe the servicer felt a responsibility to ensure I was aware of available options and potential problems.
Description of Work: Cleaned gutters, inspected and took pictures of roof to allow me to see the condition of my roof.

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
$89

Robert G.
07/2015
5.0
roofing, chimney repair
  + 0 more
with andit went better than expected Terry was excellent to work with and very professional and knowledgeable.
Description of Work: closed 2 gable vents, ducted 2 bath exhaust fans through roof and removed and replaced chimney pan.

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

Yes, I recommend this pro
$1,330

Annette B.
07/2015
3.0
roofing
  + -1 more
The service man was quite professional in manner and appearance. The cleaning of the gutters was not to the usual standard I am accustomed to having. I usually use Uncle Squezees window and gutter cleaning. I chose this company for the added benefit of having the roof inspection. I was not happy with how the job was preformed as he got muddy debris over my windows, deck and lawn furniture. He attempted to hose down the deck which then splattered on my brick and door wall. I had just had them professionally clean 2 weeks earlier. He told me he had hosed off the deck so I thought no more about it, however the next day the dried mud off the brick was not very easy to get off. It seems like this companys main focus is to sell roofing, or repairs, or gutter guards, not really clean gutters. Will stick with Mr. Squeezes whom I had out today to clean up the muddy windows.
Description of Work: Examined roof for problems,, cleaned gutter, offered to check attic for recommendations on need for additional insulation.

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

$11,900

Response from Grennan Construction
Hello, I'm sorry to her that you were dissatisfied with the work. It’s unfortunate that you didn't call the office and discuss your problem as we stand behind our work and would have been happy to send someone out to take care of your concerns. Also, the cost of you gutter cleaning was $119.00 not $ 11,900.00. Thank you for your time.

sally A.
07/2015
5.0
gutter cleaning, gutter repair, roofing
  + 1 more
would definitely callon them again
Description of Work: terry was pleasant and professional. cleaned the gutters, did roof inspection. he also did some minor repairs.they also did a great cleanup after the service.

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
$120

Maria A.
06/2015
5.0
gutter cleaning, roofing
  + 0 more
My gutters were so dirty that I even had plants growing from them. I didn't clean these gutters for at least 2 years. He left everything clean and he was very polite.
Description of Work: He cleaned all the gutters of my two floors house (2,800 sq ) + sunroom. Great work, cleaned everything after and you can't beat that kind of job for $ 99.00.

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
$99

Daniel M.
06/2015
5.0
gutter repair, roofing
  + 0 more
He was punctual, honest and comprehensive.
Description of Work: Cleaned gutters and inspected the 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
$300

Jeev Y.
06/2015
5.0
roofing
  + -1 more
Well.very professional very nice contractor and efficient
Description of Work: Heating coils for the roof and advanced around the whole house

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

Yes, I recommend this pro
$1,800

Joseph Z.
06/2015
5.0
gutter repair, insulation, roofing
  + 1 more
.No problems. Work completed as contracted.
Description of Work: Cleaned gutters, inspect roof, inspect attic 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
$100

David H.
04/2015
5.0
insulation, roofing
  + 0 more
Outstanding. Very thorough job. Recaulked around all thevents and checked for damage all around the roof including the peaks and edges. Everything checked out fine except for a small area where there appeared to be hail damage.
Description of Work: Went up in the attic and checked the insulation saw if there was any water damage. Gave a raving report that the insulation was excellent and there were no leaks. Followed up with an inspection on the 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
$99

Paul R.
03/2015
1.0
gutter repair, masonry, roofing, siding, chimney caps, chimney repair
  + 4 more
I received a quote from Mr. Grennan on 9/10/15 which I accepted. He said he would start the work in 3 to 4 weeks. I introduced him to a friend of mine that needed work on her home and he gave her a quote for her work which was more involved and more expensive than the work on my home. She agreed to his quote and he said it would be 6 to 8 weeks before he could start her work. In late September he told me it would be another 3 to 4 weeks before he could get to my work and he told my friend it would be 6 to 8 weeks before he would get to her work. We followed up with him in mid October and again were told it would be another several weeks before he could start our work. We tried to be patient with him and waited for him to call about starting the work. He NEVER called us about starting the work nor to tell us he could not do the work. We have not heard from him since that time. It has been more than 6 months since he gave me the quote and the 3 to 4 week start time. I believe it was very unprofessional of Mr. Grennan not to stay in touch with us about either the delays or when he could start working on our homes.
Description of Work: Mr Grennan gave me a quote for home repairs including a new Chimney Cap, replacing facia and trim boards, replacing gutters and tuck pointing some brick work. I agreed with his quote and he said he would start the work in 3 to 4 weeks. He never showed up to start the work and each time I spoke with him the start time was another 3 to 4 weeks away. He has never contacted me to either delay the work or to start the work. It in over 6 months since I received the quote. He did the same thing to a friend of mine that I introduced to him.

Rating CategoryRating out of 5
value
4.0
professionalism
1.0
responsiveness
2.0
punctuality
1.0

$2,700

Response from Grennan Construction
(member name removed), I want to apologize for any inconveniences that I may have caused you and your friend. It was not my intent at all. We were extremely busy last year and I should have never agreed to do the work in the first place. I am human, made a mistake by not contacting you and have learned from this. Please let me know if you would like us to honor the contract at a discounted rate. Kind Regards, Fred Grennan

Jan S.
01/2015
5.0
roofing
  + -1 more
It took about two months to get the job scheduled due to how busy they were and the rainy windy Fall we were having. I wasn't sure they would get to my job before winter. But they did and they brought a double crew to try to get it done one Saturday. They had to finish up the following Sunday morning but they asked if it was ok to return on Sunday and didn't just assume it would be ok. They were very considerate of my dogs being stressed by all the banging & workers walking by the windows & the fact they couldn't go out in the yard since they were working in the front & back at the same time. They did an excellent job on the roofing. The crew Leader was watching their work at all times. If a crew member wasn't working on the roofing, they were walking around the yard cleaning & picking up. I don't think I could have asked for a better job.
Description of Work: Complete reroof: tore off the old shingles and all wood, removed old insulation in the attic space, installed a new GAF roofing system and new 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
$7,000

Renee J.
12/2014
5.0
roofing
  + -1 more
Quote was provided punctually. Price was good. Work was performed prior to the snowfall and completed in 3 days. Area was cleaned up and so far all is good. The roof looks great and we are hoping that is works great too. Grennan was professional, reasonable and reliable. I would recommend them to anyone.
Description of Work: Whole roof tear off and replacement.

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

Yes, I recommend this pro
$10,000

Gail V.
12/2014
5.0
roofing
  + -1 more
I cancelled with another company after I got Fred's quote. It was very reasonable for the work I wanted done. I had many bids last Spring but after the hail storm in my area all the roofers inflated their prices. Grennan construction is really a quality company. After my inital bid by email, I talked to Fred and he really knows what he is talking about. He told me when the work would begin and it did. They installed the first half then it snowed. The crew showed up and finished as soon as they possibly could. We couldn't even believe that they finished it since it was very cold out.The construction forman called me many times during the job to keep me posted which I really appreciated. I was pleasantly surprised that I didn't have any rotten wood so the price was exactly as quoted. Within a day or two of completion a tree fell on our beautiful new roof. Fred came out and gave us an estimate to repair it. I wouldn't hesitate to recommend Grennan construction to anyone. My husband has already given out their name to a few friends that want an honest,reliable company.
Description of Work: Tear off all old shingles and install whole complete new 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
$9,300

Shelley H.
12/2014
5.0
roofing
  + -1 more
One week later, and everything is dry!
Description of Work: Fred Grennan arrived punctually. He was courteous and professional and apologized for not returning my call earlier. He inspected the area in question and discovered a nail through the flashing which had popped. He re-secured the nail and sealed with caulk. We discussed the numerous roofing problems I've had over the years. He was very knowledgeable and told me to call if I have any more problems and he would then be able to see what's going on and fix it. I will definitely call he again!

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
$99

Craig S.
11/2014
4.0
masonry, roofing
  + 0 more
The inspection was thorough and pictures were emailed to me with all the work that was needed and a quote was provided. My wife met with the contractor. My wife doesn't trust contractors and approaches initial conversations often with a negative attitude. My son was there also and didn't feel the contractor had the personal skills to deal with the situation. They were supposed to do monor repairs as part of the initial inspection but I was told thery didn't do so since more extensive repairs were needed. We thought the quote was high. Maybe not high but a couple thousand is a lot of money. We sought another contactor (not thru Angie's list) and he quoted a lot less. He did his own inspection and provided a lot lower quote. I also forwarded on the other pictures I had which new contractor never looked at. We signed a contract with the new guy for about 1/3 less. Needless to say when the new contractor was there his inspection missed a few areas that needed masonry work around the smoke stacks, pipes, etc. So when he was there working I pointed out the other areas which were not in his quote but he did fix those other areas and honor his lower quote. In the end pricing would have been a lot closer if the new guy really knew what to look for beside shingles. I can't comment on Grennan as repairs go since they didn't do the work but I do know they did a excellent job with the inspection.
Description of Work: Roof inspection

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

$99

ShiaoFong Y.
11/2014
3.0
roofing
  + -1 more
I never actually saw them, they came to my house and emailed me a report. I didn't find it very helpful one way or the other but I guess it was efficient for a check up. It took me awhile to get a hold of them and they sent somebody else.
Description of Work: I've used the big deal of Grennan Construction.

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

$99

Marianne D.
11/2014
5.0
roofing, roof snow removal
  + 0 more
Initially purchase a special offer through Angie's for a roof inspection -I knew there was a leak. I was impressed with the promptness of the appointment and the dedication of service and customer satisfaction - he was able to repair the leak and do a few other minor corrections. Had him quote for the "fixing" the ice dam that I get every year - HIs men arrived on the appointed day - when I stopped by in the afternoon to see how the job was coming - they had finished. I didn't realize they even completed the job! that's how neat it was. Top rated company !
Description of Work: inspected roof, installed venting in overhang fro preventing ice dams

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
$1,599

Response from Grennan Construction
Hello, We greatly appreciate your business and the time you took to leave the review. Please let us know if we can help you in the future. Regards, Grennan Construction

Joyce H. H.
10/2014
5.0
gutter repair
  + -1 more
I did have to wait to have them do the service, but they were worth it. They put in 3 new downspouts. They also put in all new vinyl soffits, because mine were rotten. They provided all the materials. They removed the old ones and put the new ones in. They also took them away too. Two employees came out to do the work. They were polite and very very nice.
Description of Work: They came out and gave me a quote at first. My gutters were leaning the wrong way. They were not draining correctly.

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

Yes, I recommend this pro
$5,400

Response from Grennan Construction
Hello, We are happy that you were satisfied with the work and appreciate your business. Regards, Grennan Construction

Karen B.
10/2014
5.0
insulation, roofing, replacement windows
  + 1 more
First I want to say that I had a very positive experience in obtaining four separate bids for my roof replacement and additional attic insulation. Using Angie's list to select the companies that bid was an outstanding process in which the "A" rated contractors all provided for pleasant and professional interactions. Making a final decision to choose Grennan Construction was also a rewarding experience. In the bid process this company came in second from the lowest bid out of four. The owner Fred was easy to talk to and his team of installers were all friendly and efficient. They left me little to worry over and kept me informed of their timeline as well as answered all my questions. As it stood we had a lot of rain and they had to work around the weather. I would also like to state than any time I left a message, my calls were returned promptly. My husband and I are very happy with our new roof and would consider Fred's company again when we need to replace windows. Great job! Thank you so much!
Description of Work: Replaced roof and installed attic 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
$10,000

Response from Grennan Construction
Hello, It was a great pleasure working for you. We appreciate your business and the time you took to leave a review. Please let us know how we can help you in the future. Kind regards, Grennan Construction

Robert H.
10/2014
2.0
roofing, siding
  + 0 more
Despite the $2,000 worth of services I bought for $1000 I was quoted a better price and better materials by CL Ward for siding for my house. It is my hope that I may receive some other service from Grennan construction for the money I spent on your "deal". I cant help but feel that the price was increased to account for the discount.
Description of Work: Nothing yet.

Rating CategoryRating out of 5
value
1.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

$1,000

Response from Grennan Construction
Hello, I'm sorry to hear that you though our price was inflated, which it wasn't. I would highly recommend that you request a refund from Angie's List for the money that was not used. I hope you were satisfied with the other company, there service and installation. Kind Regards, Grennan Construction

Lorie P.
09/2014
5.0
drywall, roofing, siding
  + 1 more
Great. Very reliable, good customer service. Fred was great and was wonderful working with our insurance company which was not easy. I would definitely use them again.
Description of Work: Insurance repair for an ice d***. Roof shingles, eaves trough, soffit repair, drywall repair and painting.

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
$8,000

Response from Grennan Construction
Thank you for leaving a review. We appreciate your business!

Stephen K.
08/2014
5.0
gutter repair, roofing
  + 0 more
Everything went great. From Fred to project manager to all the workers. They were professional on time and cleaned up after every day.
Description of Work: Removed old shingles, repaired damaged wood, installed new roof end gutters

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
$10,000

Response from Grennan Construction
Hello, We really enjoyed working for you and your wife. I hope you enjoy your roof and new gutters! Regards, Grennan Construction

Contact information

917 Orchard Lake Dr, Pontiac, MI 48341

http://www.grennanconstruction.com

Service hours

Sunday:
Closed
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
Saturday:
Closed

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.

Sunday: Closed

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

Saturday: Closed

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

Sunday:
Closed
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
Saturday:
Closed