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Atrium House

A 4,200 sqft single-family ground-up in Cobble Hill, organised around a three-story atrium. Brick + reclaimed oak + steel. Featured in Dezeen and The Architect’s Newspaper.

At a glance

0 sqft

Total floor area

Three stories + roof terrace

0 months

Schedule

Permit-to-CofO

0 M

Embodied-carbon target

tCO₂e/sqm — beat by 12%

0

Change orders to client

Issued in 21 months

The brief

The owners had been searching the neighbourhood for two years for a brownstone that worked for their family. They couldn’t find one. So they bought a 25-foot-wide lot and asked us to build something that felt like a brownstone but functioned for the way they actually live: open ground floor with a real kitchen, atrium that brings light to the centre, separate workshop on the lower level for one of the owners’ pottery practice.

Constraints: a strict R6B zoning envelope, neighbours on both sides, and a budget that ruled out a glass-skinned modernist solution. We needed something that read as continuous with the historic block but breathed for the family inside it.

The move

The atrium is the whole project. A 22-foot-tall central void with a single rooflight pulls daylight all the way down to the ground floor. The kitchen, living, and dining wrap around it. Every room in the house has at least two sources of natural light because of how the atrium puts light at the centre rather than only on the perimeter.

We pulled colour and texture from the brick of the existing block — the brick on the north and south façades is a custom blend that reads as continuous with the brownstones either side at street level, but the rear façade gives way to corten + double-height glazing for the garden.

What we’re proudest of

The schedule held. We were permitted in 11 months (DOB + Landmarks consultation), built in 10. Zero change orders to the client — everything we hit in the field, we absorbed against contingency or solved through alternates that didn’t move the contract value. That’s the work.

The building

Front façade at street level
Atrium, looking up from ground floor
Kitchen + dining, towards the garden
Stair detail at second floor
Master bedroom, looking back to the atrium
Lower-level pottery workshop
Reclaimed oak + steel handrail joinery
Brick coursing detail
Rear façade with corten cladding

Project specs

Site area

25′ × 100′ lot. R6B zoning, FAR 2.0.

Built area

4,200 sqft GFA across three stories + cellar + roof terrace.

Schedule

Permit-to-CofO 21 months. Field construction 10 months.

Cost basis

$1,180/sqft (2024 dollars). Custom millwork and stone. Cellar-up landmarked-block scope.

Energy

Air-source heat pumps, ERV, R-30 walls, R-50 roof. HERS 38.

Recognition

Featured in Dezeen (March 2025) + The Architect’s Newspaper (Q1 2025).

The team

Architect of record

Architect of record

Maya Ostrowski, AIA — design lead, 11 years at the studio.

Profile
Project manager

Project manager

Dev Kapoor — pre-con + field. 14 years.

Profile
Site superintendent

Site superintendent

Marcus Hall — came up through the trades. 18 years on the tools, 7 leading sites.

Profile
They told us up front what was likely to go wrong — and three of those four things did, and they handled them. The fourth was a surprise to everyone, and they handled that too.
M

M. Aldridge

Owner, Atrium House

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