What a commercial permit involves
Commercial plan review at the City of St. Petersburg is structurally different from residential. Every commercial permit application gets reviewed against the Florida Building Code Commercial volume (separate from FBC Residential), the IBC occupancy classification system (Group A for assembly / restaurant, Group B for business / professional office, Group M for mercantile / retail, Group F for factory / industrial), and the 2010 ADA Standards for Accessible Design with Title III private-sector requirements. The building official routes plan review through structural / mechanical / electrical / plumbing (MEP) sub-reviewers and then sends the application to the fire marshal’s office for a parallel review that runs independently. Plan review typically takes 3-6 weeks for commercial — longer than residential — and complex projects with occupancy reclassification (retail-to-restaurant change-of-use, office-to-medical-adjacent) can stretch to 8-12 weeks.
Construction classification matters more than most tenants realize. Type V-A (protected wood frame) and Type V-B (unprotected wood frame) are the two most common classifications for small commercial in St. Pete — they cap allowable floor area, allowable occupancy, and require specific fire-resistance ratings at structural assemblies. Older Downtown stock often sits in Type III-B (non-combustible masonry exterior with wood interior framing) and Gateway / Carillon office buildings frequently run Type II-B (non-combustible throughout). Construction classification drives sprinkler trigger thresholds, egress door count and width, occupancy load calculations (1 occupant per 7-15 sqft for assembly, 1 per 100 sqft for business, 1 per 60 sqft for mercantile), and the fire-resistance ratings of every structural assembly and demising wall. Get the classification wrong on the plan submittal and the entire scope gets red-lined back.
The TI scope spectrum — vanilla shell to 2nd-gen build-out. Commercial tenant improvement (TI) work spans four discrete starting conditions, each with different cost and timeline implications. Cold dark shell — bare concrete slab, no HVAC, no electrical service to the demising lines, no fire suppression stub-outs, no plumbing rough-in beyond the building core — is the most expensive starting point ($150-$250/sf for the TI itself plus base-building MEP extensions). Vanilla shell — concrete slab with HVAC, electrical service to a panel, fire suppression mains stubbed, plumbing rough-in to the closest core — is the most common landlord delivery condition ($100-$200/sf for the TI). 2nd-gen build-out — the previous tenant’s improvements still in place, with the lease-signed scope reconfiguring the existing floor plan — runs $50-$150/sf depending on how much demolition and MEP reconfiguration the new use requires. Vanilla shell + landlord allowance arrangements (a TI allowance applied against landlord-delivered improvements) trigger careful invoice tracking against the allowance schedule, which is where our open-book Time & Materials with weekly budget reports earns its keep.
MEP coordination is where small commercial GCs commonly fail. Mechanical (HVAC, including Type I and Type II vent hoods for restaurants), electrical (panel sizing, conduit routing, occupancy-sensor lighting per FBC commercial energy provisions), and plumbing (grease interceptors for restaurants, three-compartment sinks per FDA Food Code and Pinellas County Health Department, Schluter Kerdi waterproofing on tile shower walls if the scope includes a public shower) all have to lay out before drywall closes. We coordinate the MEP trade roster from pre-construction through above-ceiling rough-in inspection — every trade sees the others’ drawings, every conflict gets resolved at the table not in the field. FF&E (furniture, fixtures, and equipment) coordination — owner-supplied pizza ovens, walk-in coolers, custom-fabricated bar tops — gets sequenced into the schedule and the punch list so the building doesn’t get certified for occupancy before the FF&E is installed and inspected.
The fire marshal’s track runs separately. St. Petersburg fire marshal review is conducted by an independent office inside the building department with minimal day-to-day oversight from the building official. Fire marshal plan review typically takes 1-3 weeks (running in parallel with the main building review) and includes NFPA 13 wet-pipe sprinkler design (triggered by square footage and occupancy class — small offices under 12,000 sqft may not require sprinklers, restaurants and assembly Group A generally do regardless of size), UL 300-rated Ansul R-102 wet-chemical kitchen hood suppression for any Type I hood serving commercial cooking equipment, IBC egress calculations including door counts and minimum 32-inch clear widths (36-inch preferred per ADA §404), and emergency lighting and exit signage on 90-minute battery backup per NFPA 70. The fire marshal also conducts framing, above-ceiling, and final on-site inspections separate from the building official’s inspections. Co-owner Jeremy’s words from the From-the-Field section above — “they administer fire safety on their own without a lot of oversight from the building department” — are not a complaint, they’re a scheduling reality. We coordinate every fire marshal interaction directly.
ADA Title III is non-negotiable on any permit. Any commercial permit application — including TI scopes that don’t touch the bathrooms — triggers a current-ADA-Standards review of the entire premises. ANSI A117.1 is the consensus accessibility standard the Florida Building Code references; the 2010 ADA Standards for Accessible Design are the federal Title III regulation enforced via private right-of-action (drive-by lawsuits are a real risk in Florida). Accessible restrooms (§603/604/609 — 60-inch turning radius, 33-36 inch grab bar mounting, 17-19 inch comfort-height toilets at Toto / Kohler / American Standard commercial fixtures, 34-inch maximum counter rim height per §606), door widths (§404 — 32-inch minimum clear, 36-inch preferred), ramps and accessible entries (§405 — 1:12 maximum slope, detectable warning surfaces at parking-lot curb cuts), and tactile/Braille signage (§703) all get reviewed. Budget the ADA-trigger uplift from day one — the cheapest TI is the one that doesn’t get red-lined.
“The fire crew inside the building departments are their own fiefdom — they administer fire safety on their own without a lot of oversight from the building department. So they can be difficult to work with. Those ADA and fire requirements need to be considered early because they can add significant cost, especially to an older space that a first-time space buyer won’t have encountered before.” — Jeremy, Revolution co-owner
