HOME ADDITION CONTRACTOR — WEST HARTFORD, CT
Home Additions Built Right in West Hartford.
West Hartford homeowners trust Lagace Construction for room additions, second-story additions, and in-law suites. Over 25 years of additions built across Hartford County — permitted, inspected, and done in-house.
25+Years Experience
500+Projects Completed
★ 4.9Google Rated
100%Licensed & Insured
PROUD TO USE INDUSTRY-LEADING BRANDS
WHAT WE BUILD IN WEST HARTFORD
More space — without moving.
West Hartford's established neighborhoods have everything homeowners want: great schools, walkable streets, strong property values. The problem is the houses — built between the 1940s and 1970s — rarely have enough square footage for how modern families actually live. A well-built addition solves that without giving up the neighborhood you love.Lagace Construction handles the full scope: design, engineering, permitting through the West Hartford building department, and all construction with our in-house crew. No subcontractor juggling. One project manager, start to finish.- First-floor room additions — great rooms, family rooms, mudrooms
- Second-story additions — full floor added over existing footprint
- Master suite additions & bedroom expansions
- In-law suite additions with private entrance
- Kitchen bump-outs and rear additions
- Garage additions — attached single or two-car
WHY WEST HARTFORD HOMEOWNERS ADD ON
The math on adding vs. moving works in your favor.
With West Hartford median home prices well above state average and inventory tight, moving to a bigger house costs significantly more than adding square footage to what you already own — especially when you factor in real estate fees, moving costs, and higher mortgage rates.
Built to match your home — not just attached to it.
The biggest failure point of contractor additions is when the addition looks bolted on — different roofline, different trim profile, different siding. We match materials, match pitch, tie into the existing structure properly, and make the addition look like it was always part of the house.West Hartford's building department has specific requirements for foundation depth, egress windows, energy efficiency, and fire separation (for in-law suites). We've permitted projects through this department for years and know what gets approved without friction.- Matched materials: siding, roofing, windows, trim
- Proper foundation and structural connection to existing home
- Permitted and inspected — passes West Hartford CO inspection
- CT Licensed NHC contractor: #NHC-0016939
25+Years CT Experience
500+Projects Built
100%In-House Crew
★ 4.9Google Rated
INVESTMENT GUIDE
What does a home addition cost in West Hartford?
Addition cost depends on type, size, and finish level. Here's a realistic West Hartford range based on recent projects.Room Addition
$95K – $185K
A first-floor addition — great room, family room, bedroom, or home office — added to the rear or side of your West Hartford home.- New foundation & framing
- Matched exterior materials
- Full electrical, HVAC, insulation
- Interior finish to match existing
Second-Story Addition
$185K – $380K
Add a full or partial second floor above your existing West Hartford home — the most cost-effective way to add significant square footage without expanding your footprint.- Structural assessment & engineering
- New roof, dormers, or full second floor
- 2–4 bedrooms + bath typical
- Full design-build service
In-Law Suite Addition
$160K – $310K
A code-compliant in-law wing with its own private entrance, full kitchen, bedroom, and bathroom — perfect for multigenerational living or a future ADU rental.- Private entrance & utilities
- Full kitchen & bath rough-in and finish
- Can be permitted as a legal ADU
- Permits & CO included
YOUR QUESTIONS ANSWERED
Frequently Asked Questions — Home Additions in West Hartford
Do I need a permit to add onto my home in West Hartford?
Yes — any structural addition to a home in West Hartford requires a building permit. This includes room additions, second-story additions, garage additions, and in-law suites. We prepare all permit drawings, submit applications to the West Hartford building department, and manage the inspection process on your behalf. You don't need to coordinate anything with the town.How long does a home addition take in West Hartford?
A first-floor room addition typically runs 3–5 months from permit approval to final walkthrough. A second-story addition runs 5–8 months. In-law suite additions fall in the 4–6 month range. West Hartford building permits for straightforward additions are typically approved in 4–8 weeks. We submit applications within 2–3 weeks of finalizing the design.Will the addition match the rest of my house?
That's a top priority for us. We match roofline pitch, siding profile, window styles, and exterior trim so the addition integrates with the existing home — not just attaches to it. Internally, we match flooring, door trim, and ceiling height where possible. The goal is that someone who didn't know you added on couldn't tell.Can a room addition be converted to an ADU (in-law suite) later?
Yes — if you plan for it upfront. Adding a separate entrance, roughing in a kitchenette, and ensuring proper fire separation during initial construction costs very little compared to retrofitting it later. If there's any chance you'll want ADU capability in the future, let us know and we'll design the addition to support it from the start.Do you handle everything or do I need to hire an architect separately?
We handle design, engineering drawings, permit applications, all construction trades, and final inspections in-house. For projects that require stamped structural engineering plans, we coordinate a licensed PE. You don't need to hire a separate architect or general manage multiple contractors — one contract, one crew, one point of contact. START YOUR PROJECT
Book a free, no-pressure quote.
Pick a time that works for you. Scott or one of our project leads will visit your home, walk the addition with you, and follow up with a clear written estimate — usually within 5 business days.- On-site consultation, no obligation
- Line-itemized written estimate
- Real timelines and a real start date
- CT Licensed & Insured (Reg. #NHC-0016939)
Prefer to call? Reach Scott directly at (860) 933-2700
Serving Hartford & Tolland Counties
Based in Andover, CT — building home additions and ADUs across central and eastern Connecticut for over 25 years.
West HartfordGlastonburyFarmingtonHebronCoventryBoltonManchesterTollandAndoverColumbiaVernonEllingtonMarlboroughEast HamptonWindsor
