Brownstone full gut renovations with extensive professional design scope, have a current budgeting guidance placing architectural and associated engineering services at approximately 15%-25% of construction cost.
That scope may include existing-condition documentation, feasibility, code analysis, architectural and interior design, construction drawings, consulting engineering coordination and drawings, contractor bidding assistance, Construction Administration, project management, and closeout procedures.
NYC DOB filings and applicable LPC submissions/expediting, and progress/special inspections are services provided in-house and account for 5%-10% of construction cost.
DOB processing fees and environmental testing services (such as asbestos) are third-party services and separate. We recommend a DEP certified licensed asbestos inspector and coordinate. See the NYC renovation cost guide for a more detailed breakdown.
For preliminary budgeting, current NYC renovation guidance uses approximately $350-$450+ per square foot for low to medium end interior renovations.
For a full gut renovation, approximately $450-$550+ per square foot is a more appropriate starting reference. High-end work involving extensive custom construction, premium materials or greater complexity may reach or exceed $600+ per square foot.
Brownstones can additionally involve structural framing, stairs, cellar conditions, roofs, façades, rear extensions and complete building systems.
The industry standard is an Architect defines the renovation and its scope before a contractor provides an estimate.
Estimates provided prior a defined construction set is based on assumptions about layout, demolition, structure, plumbing, mechanical systems, kitchens, bathrooms and finishes. Through design and documentation, the Architect replaces those assumptions with articulated information.
Once the drawings and scope are sufficiently developed, contractors can price substantially the same project and the Owner can compare proposals with their Architect, intelligently.
The contractor issues construction cost bid used for basis for Owner/contractor agreement. The Architect first defines what is being priced. Read more about why the Architect should be retained before the contractor and how design and construction cost relate.