View from the new wing's living space looking out through full-height glazing to the terrace and the large sycamore beyond, the wood ceiling continuing out under the roof overhang

Five Fields Renovation

Lexington, Massachusetts

The house sits in the Five Fields neighborhood in Lexington, designed by The Architects Collaborative in the early 1950s. The original house saw many additions over time; the most recent addition, from the 1980s, never quite worked — its kitchen had become the pinch point of the whole house, the place where everyone wished to be and through which traffic to the rest of the rooms was forced to squeeze. The owners host often, want room for parents and children to come and go over the years, and asked for a house that could absorb all of those uses without giving up its calm.

The office removed the 1980s addition and built a new wing in its place, oriented to the backyard and the large sycamore that has always been the most generous thing on the site. The kitchen, dining, and living spaces now run as a single open volume along the rear of the house, opening onto a terrace through a long line of glazing. The pinch point is gone; the house is reorganized around its garden side rather than its street side. A wood ceiling carried by exposed beams runs continuously from the interior out under the roof overhang, so that the room and the terrace read as a single space when the doors are open.

A second small accessory dwelling sits off to the side, sized for one or two people and detached from the main house. Over the long arc of a family it can hold a college-age child, an aging parent, the owners themselves at some later point — or none of those, used instead as a workspace or a guest house in the meantime. The two buildings sit lightly together in the landscape, with a meadow and the original lawn between them. Construction is underway, with completion expected in summer 2027.

Project Team
Architect
Five Fields Collaborative
Collaborators
General Contractor · Costello Construction
Civil Engineer · Patriot Engineering
Floor plan of the existing house, showing the 1980s addition crowding the central kitchen and the sycamore tree to the rear of the lot
Existing Plan
Floor plan of the renovated house, with the new open wing oriented to the sycamore and terrace, and a separate ADU pavilion at lower left
Renovated Plan
The terrace seen from the rear of the lot, with the stone wall, fireplace, and the new wing's glazing visible through autumn trees
Isometric drawing showing the original roof form on the left and the renovated roof with the new wing and ADU on the right, with orange arrows indicating the additions
Roof Isometric · Existing and Renovated
Aerial view of the renovated house and ADU pavilion sitting in the wooded lot
A wood walkway approaching the ADU pavilion through the meadow, with autumn trees framing the view
Next
Massachusetts ADU Challenge Competition Entry