Estate-grade wing and great-room additions for Greenwich homes — designed by our architect and built by one accountable Omega team.
Licensed, insured & workmanship-warrantied
Architect, zoning, permits & construction — one contract
Response within one business day
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★★★★★4.9 on Google· 33 reviews
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After
Before
4.9 on Google
33+ reviews
20+ years
in Fairfield County
One team,
every trade managed
Licensed · Insured · Certified
NHC #0017262
Why Homeowners Choose Omega
An addition that looks like it was always there
Architect-Led Design
Our own architect designs your addition to match the house, so you approve the layout, rooflines, and exterior before construction starts.
One Accountable Team
We schedule and manage every trade — foundation, framing, roofing, and finishes — so you have one point of contact and seamless tie-ins to the existing home.
Zoning & Permits Handled
We manage the survey, setbacks, lot-coverage, variances where needed, and all inspections — the paperwork that makes or breaks an addition. Town approval times vary, but we track every step.
Licensed, Insured & Warrantied
CT-licensed (NHC #0017262), fully insured, and backed by a written workmanship warranty.
What We Do
Greenwich home addition services
Primary Suite & Room Additions
Add the primary suite, family room, or great room your home is missing — matched to the existing architecture inside and out.
Start with a free on-site consultation and estimate. Then our own architect creates professional plans for your addition.
02
Zoning, Survey & Permits
We handle the property survey, zoning setbacks and lot-coverage, any variance or wetlands review, and all permits with your Connecticut town — so the addition is fully compliant.
03
Managed Build
Once work begins, we're on-site every day. Our "no ghosting" policy means constant progress — foundation, framing, and finishes by our vetted trade partners, tied cleanly into your existing home.
04
Final Handover
We conduct a rigorous quality check — structure, weather-sealing, and finishes — before handing over your finished addition, backed by our written warranty.
Local Expertise
Home Additions in Greenwich, Connecticut
A Greenwich addition is expected to look as though it was always part of the house, and the town's review process holds it to that standard. From Back Country estates with room to add an entire wing to Glenville and Riverside homes gaining a great room or primary suite, Omega Development has delivered estate-grade additions with matched masonry, millwork, and rooflines for more than 20 years.
Greenwich is one of the most approval-heavy towns in the state for an addition. Beyond a building permit, a project can trigger Planning & Zoning review and Inland Wetlands (IWWA) review, and any of it can drive the timeline more than the construction itself. We sequence those approvals up front, handle the survey and setback and FAR analysis, and then manage every trade so an estate addition stays discreet, clean, and on schedule.
What to know about a home addition in Greenwich
Back Country's large lots give room to expand outward — full wings, great rooms, in-law suites — but they also frequently involve wetlands and watercourses, so Inland Wetlands review is common alongside P&Z. Setbacks, coverage, and FAR still govern how big the addition can be, and we run all of it before design is finalized so nothing gets value-engineered out after approval.
Closer to the shoreline in Riverside, an addition can sit in a coastal flood zone with elevation requirements, and exterior work on some older or historic homes can draw architectural review. Cost tracks the level of stone and custom millwork, the foundation, and whether you're adding a wing or a single room — estate-grade Greenwich additions commonly run well into the mid-to-high six figures, all itemized before work begins.
Estate additions, Greenwich-grade discretion
From a Back Country wing to a Glenville great room, we build additions to last and work with the discretion high-end Greenwich homeowners expect — matching materials exactly and navigating P&Z and Inland Wetlands review cleanly so the finished addition looks original to the estate.
Serving every Greenwich neighborhood, including:
Back CountryRiversideGlenvilleGreenwich HarborCos Cob
Greenwich, CT · 06830, 06831, 06878
What Greenwich-area homeowners say
4.9
Based on 33+ verified Google reviews
JV
Jo Vo
2 years ago
It was a pleasure working with Inacio and the Omega team! My home renovation project was not an easy or simple one, with many challenges along the way, as most construction projects tend to be. Inacio was able to navigate his way through the tough times and find solutions, ultimately leading to a stellar finished product, far exceeding expectations. What's also nice is that we've developed and continue to maintain a strong relationship even to this day. Inacio is a great person and a solid resource to have.
JB
John Bazzano
7 months ago
Inacio and his team at Omega built a stunning three-season porch for my family. There aren't enough words to say how impressed we were with his honesty, integrity, and craftsmanship. Inacio was always available and frequently came to check on the work. His team is professional and meticulous — especially the finish carpentry guys, amazing! When an issue came up, Inacio fixed it, no questions asked — truly a man of his word. I will never use anyone else. I HIGHLY recommend him!
MV
Mike Veras
3 months ago
Omega Development renovated my home's living room, hallway, two full bathrooms, and a half powder room after a water leak from the second-floor bathroom. I was amazed by Omega crew's craftsmanship and detail-oriented finishes — the work really came out great. I fully recommend them.
AT
Andy Tregurtha
4 months ago
Absolutely incredible team!! Very consultative and always striving to perform first-in-class service at a great price. They match your desires and dreams for a project and thoroughly cover all bases, so you're satisfied not only now but for the long term. 10/10 recommend — they are phenomenal!!
JP
Joye Preece
5 months ago
Omega did two jobs for us and we are so pleased with the results. They have skilled workers who complete whatever you ask while keeping the rest of the home and their work area as clean as possible. They replaced sheet rock and repainted a ceiling in one room, then did a tile demo and wall/tile install in another bathroom. Very timely — they'd arrive early to get started as soon as they could.
4 photos
MT
Marc Trimuschat
8 months ago
Fantastic experience with Omega on the renovation of my home. Inacio and his team were always there, over-communicating, and the end results are extremely high quality. It's hard to find honest, high-quality contractors today, and I'm delighted to have hired Inacio and his team — I'd recommend them highly to anyone.
MN
Mary Noel
a year ago
The best! I cannot recommend Inacio, Rafa, and their entire team more highly. Omega Development executed a major home renovation for my family — extending our living room, a full kitchen reno, and an additional master bedroom and bath.
PV
Pedro Viggiano
a year ago
I recently had my kitchen and bathroom renovated and my bar area completely redone by Omega Development, and I couldn't be happier with the results. From start to finish, their team provided top-notch service.
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JQ
Jose Quintao
5 months ago
Great work by Omega Development. Inácio is very professional, responsible, and committed to quality. Very trustworthy company!
JP
Jonnatan Pinheiro
8 months ago
I had a great experience with Omega. Very reasonably priced. They were very committed to our project. I strongly recommend them.
CL
Cleiton Leite
4 months ago
What a great experience to work with Omega. I strongly recommend them.
RO
roisinblack
Jan 16, 2025
We have used Omega for all our needs these past few years. That has included everything from minor repairs, a full house painting (inside and out), and floor refinishing, to an addition on the third floor.
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Greenwich Home Additions FAQ
Fairfield County additions run roughly $200 to $500+ per square foot, and Greenwich sits at the higher end given custom materials and stone. A wing or great-room addition commonly runs $300,000 to $700,000+. We provide an itemized quote after a free consultation.
Yes. We manage the survey, Planning & Zoning setback/FAR review, Inland Wetlands (IWWA) review where a project triggers it, building permits, and inspections through to final sign-off.
Construction usually runs about 4–6 months on site, but Greenwich approvals can add significantly on the front end. We map the full timeline — approvals plus build — with your quote.
Yes — it's a specialty. On Back Country's larger lots we design and build full wings with matched masonry and millwork, coordinating wetlands and zoning review so the addition reads as original.
