Mid-century modernist glass house glowing at dusk in New Canaan

New Canaan home additions

Home additions at a fixed price, on a fixed date.Home additions crafted with guaranteed timelines for New Canaan.

Fixed-price contracts. $0 surprise change orders. 1-year workmanship warranty.

surprise change orders

1-year

workmanship warranty

4:30 PM

photo update, every workday

Investment rangeCalculate project investment

Unforeseen change orders

1-year

Workmanship warranty

4:30 PM

Daily photo update

$0Unforeseen change orders

1-yearWorkmanship warranty

4:30 PMDaily photo update

Wetland buffers and preservation reviews shape your addition. We map those limits, then build to one fixed price and calendar.

Adding on in New Canaan means answering to the land and to the town's modernist history. Wetland buffers, slopes and preservation reviews shape what an addition can be. We map those limits first, then design and build the addition under one fixed price and one calendar.

How the agreement works

01
Architectural Feasibility Study
We walk the house and scope the project.
We walk the house, check zoning and permits for your town, and define the scope.
02
Fixed-Price Agreement
The price you sign is the price you pay.
Every trade bid is locked against approved drawings. The price you sign is the price you pay.
03
Guaranteed Calendar Milestone
Clear milestone date locked before work begins.
The finish date is locked in the contract so you know when every phase completes.

Four guarantees, written into every contract.

Each one is a clause in your Fixed-Price Agreement.

$0
Guaranteed fixed price
The price you sign is the price you pay.
4:30
Daily 4:30 PM portal updates
Photos and notes in your app, every afternoon.
HEPA
BuildClean HEPA containment
Sealed HEPA containment, so your family stays home.
1-year
1-Year workmanship warranty
Full one-year warranty on craftsmanship.

$0unforeseen change orders

Guaranteed fixed price

On approved architectural drawings, the price you sign is the price you pay. We scope the house before you sign, so hidden conditions behind the walls are our cost, not yours.

Contract typeFixed-Price Agreement

Approved drawingsA-101 to A-412

Unforeseen change orders$0

Hidden conditionsabsorbed by Greenwood

Owner signature

4:30PM, every working day

Daily 4:30 PM portal updates

High-resolution photos and your superintendent's notes land in your client app every afternoon. You can follow the whole build from your office or from Nantucket.

Today, 4:30 PM

Open kitchen with a painted steel beam, green-grey inset cabinetry and a marble island

Steel beam set and inspected. Electrical rough-in starts tomorrow at 8:00 AM.

Vaulted garden room with oak beams, steel French doors and a stone fireplace

Stone primary bath with a walnut floating vanity and a window into autumn woods

HEPAnegative-air containment

BuildClean HEPA containment

Negative-air HEPA scrubbers and sealed magnetic barriers keep the dust inside the work zone, so your family can keep living in the house while we build.

Sealed HEPA containment barrier around an active renovation work zone

Sealed zip-wall containment and negative-air HEPA scrubbers.

1-yearcraftsmanship warranty

1-Year workmanship warranty

Every project includes a full one-year warranty on craftsmanship. If anything needs attention after completion, we return promptly to inspect and make it right.

Coverage window1 year (365 days coverage)

Warranty scopeCraftsmanship and installation

Service teamDedicated warranty service

Complete craftsmanship coverage on every project

Contract typeFixed-Price Agreement

Approved drawingsA-101 to A-412

Unforeseen change orders$0

Hidden conditionsabsorbed by Greenwood

Owner signature

Today, 4:30 PM

Steel beam set and inspected. Electrical rough-in starts tomorrow at 8:00 AM.

Sealed zip-wall containment and negative-air HEPA scrubbers.

Coverage window1 year (365 days coverage)

Warranty scopeCraftsmanship and installation

Service teamDedicated warranty service

Complete craftsmanship coverage on every project

The same room, before and after a fixed-price agreement.

1985 originalTurnkey renovation

Location

Old Greenwich

Timeline

9 weeks guaranteed

Final cost

$186,000, $0 change orders

Your turnkey investment range, before anyone visits.

Three choices, an immediate range and a calendar milestone. Lock it in to get the line-item breakdown.

1Scope

Chef's kitchenfrom $75,000

Primary spa suitefrom $45,000

Full estate additionfrom $180,000

Outdoor living pavilionfrom $60,000

2Size

Square footage

1,200 sq ft

Exact sq ft

3Specification

Curated designer$280 per sq ftSemi-custom cabinetry, quartz, Thermador

Architectural luxury$380 per sq ftAmish inset rift oak, Calacatta marble, Sub-Zero/Wolf, radiant heat

Bespoke estate$520 per sq ftLa Cornue, custom steel fenestration, architectural slabs

Turnkey investment range

$585,000 to $700,000

Guaranteed timeline

18 weeks

Midpoint

$636,000

Locked in your Fixed-Price Agreement after the feasibility study.

Investment by trade

Custom millwork and cabinetry 35%$222,600

Stone, surfaces and tile 25%$159,000

Structural, plumbing and electrical (MEP) 25%$159,000

Permitting, engineering and daily project management 15%$95,400

Built for New Canaan's building department.

High-value projects stall at the permit desk, not the job site. Here is what each town reviews, and how we handle it.

New Canaan

New Canaan Planning and Zoning

What it meansWhat we do

Inland wetlands review

We map every wetland on your property before finalizing the site plan.

Work within 50 feet of a wetland or watercourse in New Canaan triggers a regulated-activity review, and that distance stretches out near a public drinking water supply, a nature preserve, or a steep slope.

We map every wetland and watercourse on your property against those distances before we finalize a site plan, so grading and foundation work don't stall waiting on a permit.

Preservation of Modern houses

For a recognized Modern house, we plan preservation with the Historical Society first.

If your house is a recognized Modern house, New Canaan will trade zoning flexibility, like a smaller setback or more building coverage, for keeping its design intact. It's an incentive, not a mandatory historic district.

For a recognized Modern house, we work with the New Canaan Historical Society on what preservation means for your addition before we design it, so the special permit and the drawings agree with each other.

Recent work, documented like a contract.

Every project closes with the same three numbers: scope, calendar and price.

A-101Greenwich

The Round Hill garden room addition

Scope640 sq ft stone and steel garden room, vaulted white oak ceiling, radiant limestone floor, ARC approval

Calendar16 weeks guaranteed. Delivered on the milestone date.

ContractFixed price: $412,000. $0 change orders.

A-102New Canaan

The Silvermine primary spa suite

Scope310 sq ft primary bath, curbless shower with linear drain, radiant heat, floor-to-ceiling window

Calendar7 weeks guaranteed. Delivered 3 days early.

ContractFixed price: $158,000. $0 change orders.

A-103Westport

The Compo Mill kitchen suite

Scope1,200 sq ft structural wall removal, steel flitch beam installation, Amish inset cabinetry

Calendar8 weeks guaranteed. Delivered 2 days early.

ContractFixed price: $218,000. $0 change orders.

Questions owners ask before they sign.

Or ask the builder directly:

(203) 395-5528

How can you guarantee zero surprise change orders?

We finish exploratory scoping before you sign: inspection openings, structural checks and locked bids from every trade, all measured against the approved drawings. If anything in those drawings turns out different once work starts, Greenwood absorbs it.

Can we live in the home during construction?

Yes. Our BuildClean™ system uses commercial HEPA negative-air scrubbers and sealed zip-wall containment. Crews keep strict 8:00 AM to 4:30 PM working hours and vacuum the protected paths every afternoon.

What is your warranty on completed work?

Every project includes a 1-year craftsmanship warranty. If any issue arises with our workmanship during the first year, our team returns to make it right.

What happens at an Architectural Feasibility Study?

Our project lead walks the house with you, measures, and reviews your town's zoning and permit path. You leave with a defined scope, a turnkey investment range and a guaranteed calendar milestone to build your decision on.

Reserve a late 2026 or early 2027 construction window.

Start with the numbers or start with a walk-through. Either way, you get a turnkey investment range and a calendar milestone before you commit to anything.

Investment rangeCalculate project investment

Direct builder line

(203) 395-5528