Home Additions & ADUs in Southlake, TX

Southlake was built on space. Even the city's mid-market neighborhoods sit on generous lots, and the estate enclaves — Clariden Ranch and Shady Oaks on roughly one-acre parcels, Estes Park and Monticello on their half-acre-plus lots — leave real room to add without crowding the setbacks. So additions here tend to be ambitious: a primary-suite wing, a two-story family-room expansion, a home office and gym, or a detached casita for multi-generational living.

Additions that read as original

The tell of a bad addition is the seam — a roofline that doesn't quite line up, brick a shade off, a floor that steps where it shouldn't. On Southlake's brick-and-stone traditionals that seam is unforgiving, so matching the existing masonry, roof pitch, and window proportions is most of the craft. Structurally, tying new framing into the house usually turns an old exterior wall into a load-bearing interior one, which calls for an engineered beam sized to the load and a new foundation detailed to move with the original slab instead of against it.

ADUs, casitas, and guest quarters

A detached guest house, a poolside casita, or a suite above a new garage suits Southlake's big lots — but a second structure raises questions of setbacks, lot coverage, utility runs, and what the deed restrictions or an HOA in a community like Clariden Ranch or Terra Bella actually allow. We confirm what's buildable on your specific lot before design starts, so the plan we take to the city is a plan you can actually build.

Expansive clay under new footings

Southlake's soil is Eastern Cross Timbers loam over expansive, Blackland-type clay that swells and shrinks with the seasons. A new wing carries different loads than the house it joins, so its footings and slab are engineered for that clay and tied to the existing foundation deliberately — the way you keep a hairline crack from opening right at the seam a few summers later.

The permit path, one registered team

An addition or an ADU is permitted through the City of Southlake Building Inspections division at 1400 Main Street, Suite 250, with the application filed online through the Tyler EnerGov Self-Service portal. Southlake also requires the general contractor to be registered with the building official before it will issue any permit — an annual, online registration under the city's contractor ordinance — so an unregistered builder simply can't pull your permit. We keep ours current year to year.

Working with The Remo Guys

We're an insured and bonded design-build firm based in Allen, roughly 40 miles east, and we've built for Southlake and the wider metroplex since 2019 — not a local office, but one team accountable from survey to final inspection. Reach Building Inspections at 817-748-8236.