Home Additions & ADUs in Fort Worth, TX

In Fort Worth the call usually starts the same way: the neighborhood is right, the house isn't big enough. Moving rarely pencils out once you factor in the lot you already own, so the question becomes how to add square footage that reads as if it were always there — a ground-level build-out, a second story, or a detached accessory dwelling unit. Which one fits depends on your zoning district, your lot, and how the new space ties into what's already standing.

Fort Worth's ADU rules, in plain terms

Fort Worth's Unified Development Code sets the framework, and your zoning district decides whether an ADU is even on the table. Most single-family lots sit in A-5 or R-1, which generally allow one accessory dwelling per lot — the granny flat, in-law suite, or classic garage apartment long common in the older near-downtown neighborhoods. Size is the hinge: an ADU of 800 square feet or less carries an exemption, while anything larger has to fit the district's floor-area-ratio and coverage limits. Accessory structures in A-5 top out around 25 feet, which allows a two-story build with careful roof-pitch planning. Detached units, attached units, and garage conversions all need a building permit and a site plan showing footprint, setbacks, and parking — there's no version that skips it.

Older lots have their own traps

In Fairmount and Ryan Place, corner lots run into stricter visibility-triangle rules that can push a build farther off the street than you'd expect, and irregular historic lot shapes often need a Special Exception before anything gets drawn. In a designated historic district, a detached cottage or garage-apartment addition also faces exterior design review. We check zoning, setbacks, and easements against your specific plat before committing to a concept, because on these lots the constraint usually decides the design.

Build out, build up, or detached

Building out at grade is cheaper per square foot but spends lot coverage; building up preserves the yard on a tight lot; a detached ADU keeps rental or multigenerational space fully separate. All three are structural decisions — a new slab has to be engineered and tied into the existing foundation so the two move together, and a second story needs an engineer to confirm the current framing can carry it. Fort Worth's soils vary enough that the foundation detail should follow a real read of your lot, not a regional rule of thumb.

Permits and one accountable team

Additions file through Fort Worth Development Services on the Accela Citizen Access portal, and the city issues a residential permit only to a registered building contractor or to a homeowner qualifying under the homestead exemption — so for a rental or second property, a registered contractor is the only realistic path. The Remo Guys is an Allen-based design-build serving Fort Worth from about 50 miles east — not a local office, but one insured-and-bonded team coordinating the survey, the engineer, and the trades so the new space adds value that holds.