Home / Services
Additions and basements
Garden-level, rear and rooftop additions, plus basements converted into real living space.
Budget range
$90k – $300k
Typical duration
18–26 weeks
Starts at
from $90k
What’s included
Everything between the first sketch and the last inspection.
✓
Survey, drawings and structural engineering
✓
Fixed-price proposal with every material named
✓
Permits, zoning review and filings
✓
Excavation, underpinning, framing and waterproofing
✓
Systems, insulation, windows and finishes
✓
Final walkthrough and a 5-year workmanship warranty
Finish levels
What changes between Essential, Signature and Bespoke.
Addition and basement budgets per square foot: $300 (Essential), $425 (Signature), $600 (Bespoke), with a $90,000 minimum.
Essential
Well-made stock materials, installed properly.
Quartz counters
Stock shaker cabinetry
Ceramic tile
Chrome fixtures
Signature
Natural stone and semi-custom cabinetry.
Honed natural stone
Semi-custom cabinetry
Handmade tile
Satin brass fixtures
Bespoke
Marble, custom millwork and unlacquered brass.
Marble slabs
Custom millwork
Hand-finished plaster
Unlacquered brass
Related work
Finished projects of this kind.
Questions
Before you book.
Next step
Book a design consultation.
An hour with a designer, at your home or our showroom. You leave with a scope outline and a budget range, free and without obligation.
Halden & Row
Design-Build
Design-build renovation for Brooklyn brownstones, apartments and townhouses since 2008.
© 2026 Halden & Row Design-Build.
NYC Home Improvement Contractor Lic. #000000.
Fully insured · Brooklyn, New York