Precision Builders is a licensed supervisory general contractor (CT HIC NHC.0017593) based in Old Greenwich, serving home addition projects throughout Darien and New Canaan, CT. We manage every project hands-on, from design and permitting through final walkthrough, so you get one point of contact and one team accountable for the result.

Full-Service Home Additions in Darien & New Canaan, CT
From foundation to finish, we coordinate every trade on your Darien or New Canaan addition so nothing falls through the cracks. You’ll always know what’s happening and when.
Why Darien & New Canaan Homeowners Choose Precision Builders
- Licensed and insured supervisory general contractor (CT HIC NHC.0017593)
- Hands-on project management from start to finish, not subcontracted out
- Direct, responsive communication throughout your project
- Experience with both residential and commercial buildouts across Fairfield County
Proven Track Record
Our project management approach is proven on demanding builds, including the full commercial buildout of Eyeluxe Eyecare and the Cookies N’ Cream retail space. That same hands-on coordination is what every Darien and New Canaan home addition client gets. See more of our completed work in the project gallery.
Home Additions Darien & New Canaan CT: Planning Your Project
Home additions in Darien & New Canaan, CT come with unique planning considerations. Every project starts with an on-site consultation. We review your goals and walk the property together, then outline realistic zoning setbacks, lot coverage limits, and permitting steps before work begins. Darien and New Canaan each maintain their own building codes. We coordinate directly with local building departments to confirm requirements and schedule inspections at the right stage of construction.
Homeowners often ask how to verify a contractor’s credentials before signing a contract. You can confirm any Connecticut home improvement contractor’s registration status through the Connecticut Department of Consumer Protection. The National Association of the Remodeling Industry also publishes helpful remodeling standards for homeowners researching best practices.
Once we receive permit approval, our team manages framing, electrical, plumbing, and finish carpentry in sequence. A dedicated project lead checks in at every phase. Whether you’re adding a second story, expanding a kitchen, or building a family room, our approach stays the same. Our home addition contractor Darien CT team brings hands-on oversight to every project, and we leave nothing to chance.