Commercial Architecture
Tailored Commercial Spaces That Work for Your Business
William Leggio Architect LLC offers commercial architecture services across New York City, designing spaces that serve business goals while meeting regulatory and operational requirements. From boutique retail stores and professional offices to full-building renovations and mixed-use developments, the firm designs with flexibility, identity, and long-term durability in mind.
Every commercial space must support its users—staff, clients, and tenants—while standing up to constant use. The firm’s approach focuses on usability, clean design, and high-performance detailing that reflects each client's brand, operations, and future growth plans.
Whether you're adapting a ground-floor retail space, reconfiguring a commercial loft, or designing a new multi-tenant property, William Leggio provides leadership across every phase—from initial feasibility to final inspections.
The Design Process for Commercial Clients
The firm’s commercial design process is structured for clarity and speed, with milestone reviews and direct collaboration between architect, owner, and consultants.
- Site and zoning review
- Test fits and space planning
- Conceptual design and material studies
- Permitting and bid documentation
- Construction oversight and final inspections
William Leggio’s experience with NYC’s regulatory requirements means fewer delays and fewer surprises—ensuring the space is not only well designed but code-compliant, energy-efficient, and suited to long-term business needs.
Types of Commercial Projects We Deliver
Commercial design in NYC is never one-size-fits-all. William Leggio Architect LLC brings adaptability and code expertise to a wide range of business environments.
Retail Architecture
Retail design focuses on clarity, flow, and experience. The firm designs welcoming, well-lit environments that support branding and ease of use. Services include:
- Storefront renovation and signage coordination
- Lighting design and circulation planning
- Millwork and fixture integration
- ADA compliance and accessibility solutions
Office Interiors & Tenant Fit-Outs
For office spaces, functionality, privacy, and adaptability are key. The firm has completed office interiors for small firms and full-floor tenant build-outs. Services include:
- Workspace layout and programming
- Conference and reception area design
- Material selection and acoustic planning
- HVAC, electrical, and lighting coordination
Mixed-Use and Multi-Tenant Properties
These projects combine residential and commercial uses or multiple businesses within a single structure. The firm provides:
- Zoning and egress analysis
- Lobby and common area design
- Code-compliant circulation plans
- Coordinated MEP planning and building upgrades
Why Clients Trust Us With Commercial Architecture
Principal involvement throughout
Clients deal directly with William Leggio from first meeting to project closeout
Deep NYC knowledge
Building codes, zoning rules, and ADA compliance are handled with expertise
Design that performs
Layouts, finishes, and systems all work together to support business goals
Detail-focused
The firm balances speed and budget with thoughtful, durable design decisions
Businesses trust the firm because it delivers reliable results in a fast-paced city where time, space, and budget all matter.
FAQs About Commercial Architecture
Do you work with both landlords and tenants?
Yes. We’ve designed commercial interiors for tenants and building owners, including retail, office, and shared spaces.
Can you assist with DOB and ADA approvals?
Absolutely. We handle NYC permitting, ADA compliance, and coordinate with all consultants and inspectors.
Do you design for specific business types or industries?
We’ve worked across many industries, including fashion retail, consulting offices, creative studios, and real estate firms.
How do you handle existing conditions in older commercial spaces?
We begin with a detailed site review, coordinate any required surveys, and build smart updates into the design.
Can you coordinate with contractors and vendors during construction?
Yes. We provide full construction administration, from submittal review to punch list.