Commercial Tenant Improvements: Everything Business Owners Should Know
Moving into a new commercial space is exciting, but most buildings aren't ready for your business on day one. Whether you're opening a restaurant, medical office, retail store, fitness studio, or professional office, you'll likely need commercial tenant improvements to make the space functional, compliant, and reflective of your brand.
Understanding the tenant improvement process before signing a lease can save time, reduce unexpected costs, and help your project move smoothly from concept to opening day.
What Are Commercial Tenant Improvements?
Commercial tenant improvements (TI) are modifications made to an existing commercial space to meet the needs of a new tenant. While some spaces are delivered as a "white box" with basic finishes, others require extensive renovations before they can be occupied.
Tenant improvements may include:
New walls and room layouts
Flooring and ceiling finishes
Lighting upgrades
Plumbing modifications
Electrical upgrades
HVAC improvements
Restrooms
Commercial kitchens
Storefront renovations
Accessibility upgrades
Interior finishes and millwork
Every business has different operational needs, so every tenant improvement project is unique.
Who Pays for Tenant Improvements?
One of the first questions business owners ask is who is responsible for the cost of the build-out.
The answer depends on your lease agreement.
Common arrangements include:
Tenant-funded improvements, where the business owner pays for all renovations.
Tenant Improvement (TI) Allowance, where the landlord contributes a set amount toward construction costs.
Shared costs, where both the landlord and tenant contribute based on negotiated terms.
Before signing a lease, it's important to understand exactly what improvements are included and what expenses you'll be responsible for.
Why Hire an Architect?
Many business owners assume they can begin construction immediately after leasing a space. In reality, most commercial renovations require professional drawings, permits, and coordination with multiple consultants.
An architect helps by:
Evaluating the existing space
Developing efficient floor plans
Ensuring compliance with building codes
Coordinating structural, mechanical, electrical, and plumbing systems
Preparing permit drawings
Working with contractors during construction
Hiring an architect early can prevent costly redesigns and help identify potential issues before construction begins.
Common Tenant Improvement Projects
Commercial tenant improvements vary widely depending on the type of business.
Examples include:
Restaurants
Commercial kitchens
Bar areas
Dining layouts
Restroom upgrades
Grease interceptor coordination
Hood and exhaust systems
Medical Offices
Exam rooms
Waiting areas
ADA compliance
Specialized plumbing
Medical equipment coordination
Professional Offices
Conference rooms
Private offices
Reception areas
Break rooms
Collaborative workspaces
Retail Stores
Display areas
Cash wrap locations
Fitting rooms
Storage rooms
Customer circulation
Each project should be designed around the way your business operates.
Building Codes and Permits
Nearly every commercial tenant improvement requires permits before construction begins.
Depending on the project, permit drawings may include:
Architectural plans
Structural drawings
Mechanical plans
Electrical plans
Plumbing plans
Fire protection coordination
Accessibility compliance
Working with experienced professionals helps reduce permit review delays and minimizes costly revisions.
Space Planning Matters
One of the most valuable parts of a tenant improvement project happens long before construction begins.
Thoughtful space planning ensures that employees can work efficiently, customers can navigate the space comfortably, and every square foot supports your business goals.
Questions to consider include:
How will customers enter and move through the space?
Where should employees work?
Is there enough storage?
Does the layout support future growth?
Are high-traffic areas designed efficiently?
A well-planned layout can improve productivity while creating a better customer experience.
Budgeting for Tenant Improvements
Construction costs vary depending on the scope of work, existing building conditions, and the level of finishes selected.
In addition to construction, business owners should budget for:
Architectural fees
Engineering consultants
Permit fees
Impact fees (if applicable)
Furniture and equipment
Signage
Technology infrastructure
Contingency costs
Planning for these expenses early helps avoid surprises later in the project.
Choosing the Right Team
Successful tenant improvement projects rely on collaboration between the owner, architect, engineers, contractors, and local permitting agencies.
Choosing an experienced design team can help:
Streamline permitting
Improve construction coordination
Reduce change orders
Keep projects on schedule
Create a space that supports your long-term business goals
The right team doesn't just help you finish construction—they help you build a better business environment. To learn more about our team, view our team page.
Start Your Commercial Tenant Improvement Project
Whether you're opening your first location or expanding an established business, thoughtful planning is the key to a successful tenant improvement project.
At Markle + Diaz Architects, we provide commercial architectural design, space planning, permitting, and tenant improvement services for restaurants, offices, retail spaces, fitness centers, medical offices, and other commercial properties throughout Orlando and Central Florida.
Our goal is to create spaces that are functional, code-compliant, and designed to support your business from opening day and well into the future.
