The Best ADU Builders in Tampa Bay, FL
Accessory dwelling units are having a real moment in Tampa Bay, and the market has filled up quickly with companies offering ADU construction. Some build ADUs as one service among many, while others specialize almost entirely in accessory dwelling units. This comparison is designed to help you understand the difference before choosing a builder.
How We Selected These ADU Builders
We used the same criteria for every company on this list, using information from Google Business Profiles, company websites, and the Florida DBPR license database. When information could not be independently verified, we marked it as unverified rather than estimating.
01
Google Reviews
Google rating and review count from the company's Google Business Profile.
02
Years in Business
The company's operating history when it could be verified. If a company only states an approximate number, we identify it as such.
03
License Status
Florida contractor license information checked through the Florida DBPR database
04
ADU Experience
Use this space to promote the business, its products or its services.
05
Service Area
We confirmed that the builder serves St. Petersburg and/or the broader Tampa Bay market.
What Does “ADU” Actually Mean?
An accessory dwelling unit (ADU) is a secondary residential unit located on the same property as a primary home. Depending on the property and local regulations, an ADU may be detached from the main house, attached to it, created from an existing garage, or incorporated into the home's existing footprint.
Detached ADU
A separate backyard dwelling with its own living space.
Attached ADU
A secondary unit connected to the primary residence.
Garage Conversion
An existing garage converted into a livable residential unit.
Interior ADU
A separate living space created within an existing home.
Featured ADU Builders in Tampa Bay
Here are seven ADU builders serving Tampa Bay that met the criteria used for this comparison.
1. Built With Love
ADU Design-Build
Built With Love is a St. Petersburg-based design-build contractor offering ADU construction alongside renovations, new construction, roofing, and other building services. The company handles multiple building trades in-house and serves communities throughout the Tampa Bay area. Because Built With Love publishes this comparison, it is included as one of the companies being compared rather than presented as an independent recommendation.
License: CBC1262892
Google Rating: ★ 5.0 (26 reviews)
2. OTB Builders
ADU Design-Build
OTB Builders offers ADU design-build services and garage conversions throughout the Tampa Bay area. The company states that it has more than 15 years of experience, although that figure could not be independently verified for this comparison. Its Google Business Profile currently has no public reviews, so homeowners should rely more heavily on direct references and completed project examples.
License: CBC1269281
Google Rating: No Public
3. CASK Construction
ADU Constrution
CASK Construction has one of the strongest publicly documented review profiles among the builders included here, with a 5.0-star Google rating across 28 reviews. The company offers several ADU configurations, including attached and detached units, garage conversions, and in-law suites. Its license is currently listed as active through Florida's contractor licensing system.
License: CGC1526342
Google Rating: ★ 5.0 (28 reviews)
4. TomCo Solutions
ADU Construction
TomCo Solutions has one of the larger publicly documented review profiles among the ADU builders compared here, with 34 Google reviews averaging 5.0 stars. The company offers detached, attached, and garage-conversion ADUs and serves communities across the Tampa Bay region. TomCo describes its business history as spanning more than a decade.
License: CBC1264541
Google Rating: ★ 5.0 (34 reviews)
5. Suncoast Dwellings
ADU Construction
Suncoast Dwellings focuses specifically on ADU planning, design, construction, and permitting in the St. Petersburg area. The company has a 5.0-star Google rating, although its seven reviews represent a relatively small public sample. Homeowners should consider asking for recent ADU references and completed project examples before making a decision.
License: CRC1335942
Google Rating: ★ 5.0 (7 reviews)
Goshen Tiny Homes
ADUs & Tiny Homes
Goshen Tiny Homes offers a broad range of accessory dwelling and small-home configurations, including detached and attached units, two-story units, guest houses, and office ADUs. The company reports more than 10 years in business and has a 5.0-star Google rating across 25 reviews. Because its work also includes tiny homes, homeowners should confirm that the company's typical designs match the size and use requirements of their planned ADU.
License: CRC1335198
Google Rating: ★ 5.0 (25 reviews)
Goldsborough Company
Custom Additions
Goldsborough Company offers a broader range of residential construction services, including backyard structures with kitchens and bathrooms, custom homes, and additions. That broader experience may be useful for homeowners whose project falls somewhere between a traditional ADU and a larger residential addition. The company currently has no public Google review history to compare.
License: CGC048474
Google Rating: No Public
ADU Builder Comparison
What to Ask Before Hiring an ADU Builder
01 Check your zoning first
Before choosing a builder, confirm what your property can legally accommodate. ADU regulations can vary between St. Petersburg, Tampa, Clearwater and other Tampa Bay communities.
02 Verify the license
Look up the contractor directly through Florida DBPR rather than relying only on information published on a company's website.
03 Ask who handles permitting
Find out whether the builder handles the permit application and coordination themselves or expects the homeowner to work with a separate permit professional.
04 Ask for a detailed cost breakdown
ADU costs can vary significantly depending on foundation work, utility connections, square footage, finishes and site conditions. Ask for a written breakdown instead of relying on a single project estimate.
05 Ask for recent ADU references
Ideally, speak with homeowners whose ADUs were completed recently. Ask about permitting, construction timelines, change orders and the final project cost.