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Top-Rated Deck or porch build or replacers in Cos Cob - Updated Nov 2026

Avatar for Lasting Strength
Lasting Strength
5.0(
46
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1994

Free estimates

Customers say: Quick response

"Adam was great to work with. He had a great idea for my sliding door replacement. We also had him replace some windows as well. He was always there when he said he would be, and communicate very well throughout the process. I will definitely use him for future projects."
tv cabinet built in
shower
wine cellar
built in
pergola

+116

Response time4 days
Response rate100%
3 neighbors recently requested a quote
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
122
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"We needed to replace a patch of our living room ceiling due to damage from a water leak upstairs. We contacted C&B, who responded and quoted us a price quickly. The price was fair for a multi-day job, they got it done within a week, and they even helped us repaint the ceiling. Very professional, courteous, and trustworthy. We'd strongly recommend!"
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1839

Response time1 day
Response rate92%
Recommended by85%of homeowners
Avatar for BRT Services, LLC
BRT Services, LLC
4.9(
40
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"I had a variety of small handyman projects - replacing doorknobs, patching holes, fixing molding, etc. the guys were very polite, professional, and knowledgeable. They took off their shoes to enter the hose, and did a great job, and kept me informed the whole time. I would definitely recommend them and hire them again!"
Project 1
Project 3
Project 1
Project 2
AFFILIATIONS

+7

Recommended by100%of homeowners
Avatar for A2Z Contractors, LLC
A2Z Contractors, LLC
4.6(
133
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"We used Westlyn and A 2 Z for a new Trex deck with a new above ground pool set. and incorporated it into the deck itself. We did not have specific plans, just an idea of how it could look. Westlyn worked with us the whole way addressing our concerns, and guiding his team to our final product, a lovely new pool and deck i cant wait to swim in!! they were professional , clean, and very helpful as we ran into little glitches here and there as all projects do, and solved them quickly. the only problem we had was waiting at different times due to the pandemic, obviously this is out of his control. we would definitely refer him to others, the work exceeded expectations and was within budget."
bathroom
bathroom
bathroom
bathroom
bathroom

+5

Response time2 days
16 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for JR General Contractor, LLC
JR General Contractor, LLC
4.8(
15
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"Prices are very reasonable and performs an excellent quality of work. He takes time to answer your questions and is very professional in dealing with his customers. Highly recommended, and will definitely hire for future projects."
Footings starts
Footings starts
footings
concrete day
concrete day

+65

Response time2 days
Recommended by86%of homeowners
Avatar for RockSolid Construction, LLC
RockSolid Construction, LLC
4.6(
26
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1992

Free estimates

Small jobs welcome

"Jeff is an amazing contractor and his team as well; super professional, honest, caring, excellent quality of work and great price. They did a beautiful job, I love my new porch. This Company shows a super high quality in all aspects."
Response time5 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Solimine Contracting, LLC
Solimine Contracting, LLC
4.0(
47
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"The owner showed up on the first day of the job with his crew & they were very professional & got the 12x24 deck done in only 4 days(no footings)They replaced all the decking & rails & completely new stair setup. Installed extra bracing & brackets on the framing.All work done with quality.The crew cleaned up afterwards.They are very fair on their price point."
Eclectic Kitchen - Red Open Stainless Steel Appliances
Traditional Kitchen - Red Open Small Light Gray Tile Back Splash
Kitchen
New Canaan Home Renovation
Wrap Around Porch

+323

Response time2 days
35 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Casner Home Improvement LLC
Casner Home Improvement LLC
4.8(
31
)
Deck or Porch - Build or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"We had a great experience. His price was reasonable. He responded to all messages. Was easy to schedule a visit to house to look at room we wanted painted. He promptly gave us an estimate and scheduled the job within 2 weeks. His work was fantastic. The room looks great. It was two colors with a chair rail separating. He was neat and cleaned up everything. He was polite and professional. Would definitely use again and recommend him to others."
Logo
New Deck
New Deck
New Deck
New Deck

+13

26 neighbors recently requested a quote
Recommended by86%of homeowners
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FAQs for deck or porch projects in Cos Cob, CT

Northern white cedar is the most affordable cedar decking type and delivers exceptional value with low material expenditures. This option provides proven cost efficiency, meets essential durability standards, and is easy to paint or stain to meet your aesthetic preferences. By comparison, eastern red and western red cedar supply extra longevity and richer texture for a modest increase in investment.

Yes, cedar is a great choice for decking material. It offers a timeless look and natural resistance to decay and insect damage. Keep in mind that cedar requires regular maintenance, like resealing and cleaning, to keep it in top shape. With proper care, a cedar deck can enhance the appeal and value of your outdoor space for years to come.

No, cedar is not pressure-treated because it contains oils and tannins that naturally resist insect damage, rot, and decay. With regular maintenance, including annual cleaning and resealing every two to three years, cedar maintains its structural integrity and pleasing appearance for 10 to 15 years or more. Cedar’s natural durability, without need for chemical treatments, makes it an environmentally friendly option for outdoor structures like decks.

You should stain or seal your cedar deck every two to three years to maintain its appearance and longevity. This helps protect the wood from moisture, mold, and environmental damage, preserving its natural color and extending its lifespan. Regular maintenance keeps your outdoor space both attractive and durable season after season.

The Cos Cob, CT homeowners’ guide to decks or porches

From average costs to expert advice, get all the answers you need to get your job done.