4.7 
532 *The Angi rating for Treehouse Building companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
*The HomeAdvisor rating for Treehouse Building companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
Last update on June 25, 2026
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"I hired the cleaners and builders for one time maid service to help clean up after construction. They were efficient and affordable ..did a great job thank you so much!"
+1831
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1994
Free estimates
Customers say: Quick response
"Adam is a pleasure to work with. Great communication, excellent workmanship, and he knows his stuff. He does quality work, and makes sure the project is built strong to last."
+116
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"A2Z completed a full kitchen, dinning room, and mudroom remodel. They moved walls (including load bearing), re-did plumbing and electrical, new flooring, new ceilings, new window installs, painting (interior and exterior) and relocated a bath room. Weslyn and his crew we're responsive and worked with us through delays that were outside of their scope of work. The project came out very nice and we're excited to be in our new 1st floor!"
+5
Serving Cos Cob, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Emergency services offered
"Great job! Super quick and efficient."
+232
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Fixed my kitchen lazy Susan door"
+15
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Noel and his staff were punctual, meticulous, and took care of all of my concerns during the course of my project. I am pleased with the finished product and will use Jarrett Home Improvement again."
+3
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!"
+7
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: Quick response
"Elvin, the owner of the company is reliable, knowledgeable (he knew what questions to ask) and professional. He was personable and did a great job at a fair rate. I would recommend him for any future project. Hire him, you will not be sorry."
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"Not an easy job to hang a picture over a spiral staircase!"
Serving Cos Cob, CT and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Did a most admirable job with the with the existing parts I was able to salvage for putting the shelves that had fallen down back up."
+17
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