Permanent Modular ADUs Built for Pinellas County & Tampa Bay
Mesocore Modular Homes designs and installs Accessory Dwelling Units (ADUs) across St. Petersburg and Pinellas County. From backyard cottages and granny flats to in-law suites, home offices, and long-term rental units—our permanent modular construction delivers faster builds, permit-ready plans, and hurricane-resilient quality.
Turnkey building made simple: Design —> Permit —> Build
Our local zoning expertise keeps your project on track and moving quickly.
Why St. Petersburg Homeowners Choose Mesocore
The Mesocore Model E ADU
Factory-built, hurricane-resilient, and ready to install in days.
Model E ADU
1
Bedrooms
1
Bathrooms
420
Sq. Ft.
Starts at $99k
How We Build ADUs in St. Petersburg
See our full Adu Buiying Process here
Serving St. Petersburg and Surronding Neighborhoods
We permit and build across St. Petersburg and southern Pinellas County, including:
Historic Kenwood & Old Northeast
Gulfport & Shore Acres
Grand Central District & Downtown St. Pete
Snell Isle & Crescent Lake
St. Pete Beach & Gulf Beaches
Pinellas Point & Tyrone Area
Permits & Zoning in St. Petersburg
St. Petersburg allows ADUs in various residential districts, including Neighborhood Traditional (NT) and Neighborhood Suburban (NS) zones. Units are allowed up to 800 sq ft or 67% of the primary home’s size (whichever is less). Mesocore reviews your lot dimensions, setbacks, and alley access to ensure full compliance before permit submittal.
Financing Options for Your ADU
Many homeowners use HELOCs, renovation loans, or cash-out refinance to fund ADUs. We can connect you with lenders familiar with modular construction projects.
St. Petersburg ADU FAQs
Does St. Petersburg allow ADUs?
Yes, most residential zones permit ADUs with conditions. We confirm zoning for your specific address.
How long does it take to build an ADU?
Once permits are issued, modular installation and finishing are typically faster than traditional builds.
Our 420 sq ft ADU can be built in as little as 10 days.
Can I rent my ADU in St. Petersburg?
Yes. Long-term rentals (30+ days) are permitted in St. Petersburg. Short-term transient rentals (under 30 days) are generally restricted in standard residential zones.
Do I need extra parking?
Some zoning districts require additional off-street parking; we’ll confirm during feasibility.
Can my ADU be connected to my existing septic system?
In most cases you can connect to your existing septic as long as it is large enough to handle additional plumbing.
This will be found out during feasibility.
Claim Your Free ADU Space Check
Fill out the form below with your property address. Our team will review local zoning rules, lot setbacks, and buildable area for your lot, and email you the results.
