Franca Engineering is headquartered in Kissimmee — Osceola County is where we live and work. We prepare and seal permit packages for screen enclosures, pool cages, pergolas, lanais and patios in Kissimmee, St. Cloud, Poinciana and Celebration, and file them through the Osceola Permits portal for you.
Most of the enclosure and patio packages we seal every month are for properties within a short drive of our office. From vacation-home communities off US-192 to new builds in Poinciana, established neighborhoods in St. Cloud, and HOA-reviewed streets in Celebration, we know what the Osceola County building department wants to see before your application ever reaches a reviewer's queue.

Osceola County will not issue a permit for a screen enclosure, pergola, lanai or covered patio on the strength of a brochure or a reused drawing set. The application has to stand on sealed, site-specific engineering.
Calculations and drawings must follow FBC 2023 and ASCE 7-22 and carry the seal of a Florida Professional Engineer. The county checks that every post, beam and anchor was sized for the wind loads at your address — not copied from another job.
Applications go through the county's Osceola Permits online portal as signed and sealed digital plan sets. For jurisdictions or cases that still take paper, two plan sets are the norm — we deliver whichever your reviewer requires.
Design wind speed is typically around 139 mph (Vult), confirmed per site during design. Exposure category matters here: open ranch land east of St. Cloud is a different exposure than a dense Kissimmee subdivision, and it changes the loads on the structure.
You'll also need a site plan drawn from your property survey showing setbacks, plus Product Approval numbers for the aluminum framing and fastener systems. Our package bundles all of it so the application is complete on day one.
One flat rate covers engineering, sealing and submission to Osceola County. Same-day proposal, 50/50 payment structure, revisions free until your permit is approved.
| Service | Flat Rate |
|---|---|
| Pool Enclosure (Screen Cage over Pool) | $2,000 |
| Screen Enclosure / Screen Room (No Pool) | $1,500 |
| Lanai Enclosure | $1,200 |
| Covered Patio | $1,200 |
| Pergola | $1,000 |
| Outdoor Kitchen | $900 |
| Concrete Slab | $900 |
| Pool Demolition | $800 |
| After-the-Fact Permit (Unpermitted Structure) | from $1,500 |
Even though we're based in Kissimmee, everything runs remotely — your survey and a handful of photos replace the site visit. That keeps the flat rate low and the timeline short.
Send address, dimensions, survey and photos by email or WhatsApp
Flat-rate PDF with scope, price and timeline — usually within hours
Site-specific design per FBC 2023 / ASCE 7-22, sealed in 5–7 business days
Filed through the Osceola Permits portal · revisions free until approved
When the engineer sealing your drawings is based in the same county as the building department reviewing them, things move faster. Aluminum installers, pool builders and homeowners across Osceola County use us because our packages are complete on first submission — and because they can reach the engineer directly, not a front desk.
We submit to Osceola County constantly. We know the portal, the checklist items reviewers flag, and the documentation vacation-rental and HOA communities like Celebration expect alongside the county permit.
Quote requests get a same-day proposal. Questions mid-project get answered by the PE himself — which is exactly what contractors juggling multiple Kissimmee jobs need to keep crews scheduled.
The price includes engineering, the seal, portal submission and every revision the county asks for until the permit is issued. No hourly meters, no resubmission fees.

The sealed engineering package is ready in 5–7 business days. County review through the Osceola Permits portal depends on workload — residential accessory structures commonly clear in a few weeks. We handle any reviewer comments free of charge until approval.
Typically around 139 mph (Vult) per ASCE 7-22, confirmed per site during design. Exposure category varies — open land near St. Cloud is treated differently from a dense Kissimmee subdivision, and that changes the design loads.
Yes. Submission through the Osceola Permits online portal is included in every package, and we track the review and respond to comments for you.
Yes — we're based in Kissimmee, so this is our home jurisdiction. The process is still fully remote for you: survey and photos by email or WhatsApp, no appointments needed.
Yes. We prepare after-the-fact permit packages (from $1,500) — as-built drawings, sealed calculations and county submission — to legalize existing unpermitted screen rooms, patios and pergolas.
Send your survey and photos today — same-day flat-rate proposal, sealed package in 5–7 business days, filed with Osceola County for you.