Best accessory dwelling unit — St. Petersburg, FL

Last updated: September 24, 2026

What affects the price

Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

The best ADU is one that is built to last and fits perfectly into your existing property layout while meeting all local regulations. You need a high-quality unit if you are looking to increase your property value or create a comfortable long-term space for guests or tenants. We focus on durable construction and thoughtful layouts that maximize every square foot of your backyard. Exact pricing confirmed free on the call.

Frequently asked in St. Petersburg

Also serving nearby: Clearwater · Tampa · Lakeland · Plantation · North Port

All cities in Florida →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of St. Petersburg — population 263,553; about 4,264 residents per square mile across 61.8 sq mi.

Neighborhoods served in St. Petersburg: Old Northeast, Downtown St. Petersburg, Kenwood, Gulfport, Coquina Key — and every surrounding area.