What is a tenant improvement?
A tenant improvement, often shortened to “TI,” modifies a commercial space for a new or existing occupant.
Common TI projects include:
Restaurants and cafés
Retail stores
Offices
Salons and wellness spaces
Childcare centers
Medical or professional offices
Fitness studios
Bars and entertainment venues
Bakeries and food-production spaces
Some projects are mainly cosmetic. Others involve changes of use, new restrooms, commercial kitchens, structural work, accessibility upgrades, mechanical systems, or significant life-safety improvements.
Those differences have a major effect on schedule.
The major stages of a TI project
A realistic timeline should account for the entire process.
1. Existing-condition documentation
The architect may need to field-measure the space, review available records, identify unpermitted work, and compare existing conditions with previous approved drawings.
Missing or inaccurate background information can delay every later phase.
2. Feasibility and concept design
The team studies whether the use fits, how occupants will enter and exit, whether restrooms and routes are accessible, where equipment will go, and which building systems need to change.
3. Client and landlord decisions
A project cannot move efficiently when major layout, equipment, finish, or operational decisions remain unresolved.
Landlords may also require review before the permit is submitted.
4. Consultant coordination
Commercial projects may need structural, mechanical, electrical, plumbing, energy, kitchen, civil, acoustic, fire-protection, or accessibility consultants.
5. Permit-document preparation
The architect combines the approved design, code information, consultant drawings, details, schedules, and agency requirements into a coordinated submission.
6. City review
The Department of Building Inspection reviews construction plans and issues building permits. Depending on the scope, Planning, Fire, Public Health, Public Works, or other agencies may also participate.
7. Comment responses
The design team revises the drawings and prepares written responses. Additional review cycles may be required.
8. Permit issuance
Departmental approval may not be the final administrative step. Contractor information, updated signatures, fees, or issuance documents may still be required.
What makes a TI permit take longer?
The following conditions commonly increase the schedule:
Change of use or occupancy
A retail space becoming a restaurant, childcare center, or entertainment venue may require more review than one retail tenant replacing another.
Planning approvals
Some uses require neighborhood notification, conditional authorization, zoning clearance, a minor use permit, or another entitlement before or alongside the building permit.
Food service
Restaurants and cafés can require Health Department review, kitchen coordination, ventilation, grease control, plumbing, and fire-suppression systems.
Accessibility barriers
Entrances, floor-level changes, restroom geometry, service counters, door clearances, and routes may require substantial redesign.
Structural work
Removing a wall, adding heavy equipment, cutting the roof, modifying stairs, or changing exterior openings may require structural calculations and details.
Incomplete information
Unknown equipment, unresolved layouts, missing surveys, inconsistent drawings, and delayed client decisions can add weeks or months even before City review begins.
Existing violations or unpermitted work
The proposed project may need to address existing conditions before or as part of the new permit.
Multiple reviewing departments
Each additional agency introduces requirements that must be coordinated with the rest of the set.
How can the process move faster?
No architect can control every City review timeline, but a project team can reduce avoidable delays.
The most effective steps include:
Confirm the proposed use before signing the lease.
Obtain reliable existing drawings or field measurements.
Select major equipment early.
Identify required consultants at the beginning.
Make client decisions according to an agreed schedule.
Coordinate architectural and engineering drawings before submission.
Respond to City comments promptly and completely.
Begin contractor outreach before permit approval.
Track administrative issuance requirements.
Avoid introducing major design changes during review.
Fast permitting usually comes from preparation, coordination, and decision-making—not from finding a shortcut after an incomplete application has been submitted.
A real-world example
At a San Francisco commercial tenant-improvement project on Washington Street, Creates Cool coordinated architectural, accessibility, Health Department, mechanical, electrical, and administrative comments across a large permit set.
The project eventually reached approval from the reviewing departments, but final processing still required drawing-sheet coordination, renewed professional stamps, corrections to discipline information, and final submission updates.
This illustrates an important point: “the design is complete,” “the departments have approved it,” and “the permit has been issued” are not always the same milestone.
What timeline should a business owner plan around?
Rather than relying on one promised permit duration, build the project schedule around ranges and decision points.
A useful schedule should identify:
Lease and feasibility review
Design duration
Equipment-selection deadlines
Consultant coordination
Landlord review
Permit preparation
Expected review cycles
Contractor bidding
Permit issuance
Construction
Inspections and opening approvals
Businesses should also maintain financial contingency for rent, escalation, consultant revisions, and unexpected existing conditions.
When should you hire the architect?
Ideally, the architect should be involved before the lease is signed or immediately afterward.
Early involvement allows the team to evaluate whether the use is allowed, determine whether the physical space can support the program, identify expensive infrastructure work, and develop a realistic schedule before the business becomes committed to an opening date.
Creates Cool is a San Francisco architecture studio experienced in commercial tenant improvements, restaurants, cafés, retail, childcare, wellness, and complex permitting.