Chelsea Townhouse Extension

01 — Overview

Rear-yard horizontal extension adding 600 square feet of living space to a Chelsea townhouse, including a steel-framed glass curtain wall facing the garden.

02 — Scope of Work

• Underpinning and foundation extension
• Structural steel framing
• Floor-to-ceiling glass curtain wall
• Open kitchen and family room buildout
• Garden landscape coordination

03 — Challenges

Underpinning a 19th-century party wall while keeping the adjacent townhouse fully occupied throughout construction.