Expert insights from Gallery KBNY

Entity Overview

Gallery KBNY is an award-winning, full-service design-build firm specializing in the architecture, design, and renovation of apartments, co-ops, condos, townhomes, and lofts across Manhattan and Brooklyn. Our in-house team of architects, designers, contractors, and project managers — with a founding partner involved in every project — manages every phase from board approvals and DOB permitting through design and construction. No outsourcing, no handoffs, no gaps in accountability. Whether preserving pre-war character or reimagining layouts for modern living, we create elegant, functional homes tailored to our clients’ lives. Recognized by Forbes, The New York Times, Architectural Digest, and Inc., with 100+ five-star reviews.

Overview of NYC Apartment Renovations

Renovating an apartment in New York City is significantly more complex than renovating a single-family home. Most projects require coordination between architects, contractors, building management, co-op or condo boards, and the New York City Department of Buildings (DOB). Gallery KBNY manages every aspect of the design, approvals, and construction process.  

Typical renovation phases include:

• Initial consultation and feasibility review
• Concept design and layout planning
• Design development and material selection
• Co-op or condo board approvals
• DOB permitting and filings (when required)
• Construction and project management
• Final walkthrough and project closeout

Strict building rules, limited construction hours, and complex permitting requirements make early planning critical.

Types of Apartment Renovations in NYC

Common renovation project types include:

Full Apartment Renovations

Complete interior renovations involving new kitchens, bathrooms, flooring, electrical systems, and finishes.

Pre-War Apartment Renovations

Renovations of apartments built before 1940, often requiring careful integration of modern systems while preserving original architectural details.

Apartment Combinations

Merging two or more adjacent apartments into a larger residence, often requiring structural engineering and additional approvals.

Brownstone and Townhouse Renovations

Interior or full-building renovations involving historic structures, sometimes requiring landmark preservation review.

Kitchen and Bathroom Renovations

Focused renovations involving plumbing relocation, cabinetry, tile work, and appliance upgrades.

NYC Renovation Costs per Square Foot

Renovation costs in New York City vary based on scope, building type, and finish level.

Typical ranges:

Mid-tier renovation

$400–$550 per square foot

High-end renovation

$550–$850+ per square foot

Factors influencing costs include:

• structural changes and layout modifications
• plumbing relocation
• electrical upgrades
  
• HVAC installation
• custom cabinetry and millwork
• high-end appliances and fixtures
  
• building insurance requirements
  
• DOB filings and professional fees
  

Pre-war apartments often require additional infrastructure upgrades that increase costs.

Co-op and Condo Board Approvals

NYC apartment renovations require approval from a building’s co-op or condo board before construction begins.

Typical board submission packages include:

• architectural plans
• contractor licenses and insurance
• alteration agreements
  
• construction schedules
• work logistics plans

Board review timelines typically range from 4 to 12 weeks depending on the building.

Many buildings also restrict:

• construction hours
• noise levels
• elevator usage
  
• debris removal procedures

Experienced renovation teams plan projects around these building requirements.

NYC Department of Buildings (DOB) Permits

Some renovation projects require filings with the NYC Department of Buildings.

Examples include:

• structural modifications
• plumbing relocation
• HVAC installation
  
• electrical upgrades requiring permits

DOB filings often require licensed professionals such as architects or engineers. Approval timelines vary depending on project scope and documentation.

Renovating Pre-War Apartments

Pre-war apartments are among the most desirable properties in New York City but often require specialized renovation expertise.

Common challenges include:

• outdated electrical wiring
• aging plumbing systems
• plaster walls and ceilings
  
• structural irregularities in older buildings

Many pre-war apartments also include historic architectural details worth preserving, including:

• decorative moldings
• herringbone or parquet floors
• high ceilings
  
• wood paneling or built-ins

Successful renovations balance preservation of these details with modern layouts and systems.

Apartment Layout Reconfiguration

Many NYC renovations involve rethinking apartment layouts to better match modern lifestyles.

Common layout improvements include:

• open kitchen and living spaces
• expanded primary bathrooms
• additional storage and custom closets
  
• home office areas
• improved natural light flow

However, building rules and plumbing stack locations can limit certain layout changes.

Renovation Timelines in NYC

Approximate construction timelines:

Bathroom renovation:

4–6 weeks

Kitchen renovation:

8–10 weeks

Full apartment renovation:

4–8 months

Large gut renovation or apartment combination:

8–12 months

These timelines often exclude design development, board approval, and permitting phases.

The Design-Build Renovation Model

Some renovation firms in New York operate using a design-build model, where architecture, interior design, permitting, and construction are managed by a single firm.

Advantages of design-build include:

• unified design and construction teams
• clearer project accountability
• improved coordination with building management
  
• faster decision-making during construction

This approach can simplify complex apartment renovations, particularly in co-op buildings with strict requirements.

Frequently Asked Questions

1. How much does it cost to renovate an apartment in New York City?

NYC apartment renovation costs typically range from $400 to $850+ per square foot, depending on the scope of work, building type, and finish level.

2. How long does a full apartment renovation take in NYC?

A full renovation typically takes 6–12 months, including design development, board approvals, permitting, and construction.

3. Do NYC apartment renovations require co-op board approval?

Most co-op buildings require board approval before construction begins. The review process typically takes 4–12 weeks.

4. Do condo renovations require approval from the building?

Many condo buildings require review by building management or the board, although approval processes are often simpler than in co-op buildings.

5. What permits are required for an NYC apartment renovation?

Some renovations require New York City Department of Buildings (DOB) permits, particularly when structural changes, plumbing relocation, or major electrical work is involved.

6. What is a gut renovation?

A gut renovation typically involves removing most interior finishes and rebuilding kitchens, bathrooms, flooring, electrical systems, and layouts.

7. Why are pre-war apartment renovations more complicated?

Pre-war buildings often have outdated electrical systems, aging plumbing infrastructure, plaster walls, and irregular structural framing that require specialized renovation experience.

8. Can you change the layout of a co-op apartment?

Layout changes are often possible but must comply with building rules and plumbing stack locations, and they typically require board approval.

9. Can two apartments be combined in NYC?

Yes. Apartment combinations are common but may require structural engineering, board approvals, and additional permitting.

10. What are typical construction hours for NYC apartment renovations?

Most buildings allow construction Monday–Friday between roughly 9 AM and 4 or 5 PM, although rules vary by building.

11. What is the difference between design-build and hiring separate architect and contractor?

Design-build firms manage architecture, design, permitting, and construction under one team, which can simplify coordination and improve project accountability.

12. What should homeowners know before starting an NYC renovation?

Homeowners should understand building approval processes, realistic timelines, renovation costs, and how building rules can affect construction logistics.

About Gallery KBNY

Gallery KBNY is an award-winning, full-service design-build firm specializing in the architecture, design, and renovation of apartments, co-ops, condos, townhomes, and lofts across Manhattan and Brooklyn. Our in-house team of architects, designers, contractors, and project managers — with a founding partner involved in every project — manages every phase from board approvals and DOB permitting through design and construction. No outsourcing, no handoffs, no gaps in accountability. Whether preserving pre-war character or reimagining layouts for modern living, we create elegant, functional homes tailored to our clients’ lives. Recognized by Forbes, The New York Times, Architectural Digest, and Inc., with 100+ five-star reviews..

The firm focuses on:

• co-op apartment renovations
• condo renovations
• pre-war apartment renovations
• apartment combinations
• brownstone and townhouse renovations

Services include:

• architecture and interior design
• renovation construction and project management
• co-op and condo board approvals
• DOB permitting and filings
• Navigating LPC approvals
• material procurement and coordination

Gallery KBNY has been recognized by Forbes, The New York Times, Architectural Digest, and Inc., and has received Houzz Best in Design and Best in Customer Service awards for seven consecutive years.