Home Additions & ADUs in Irving, TX

A lot of Irving families are settled exactly where they want to be — a Plymouth Park street with big lots and mature trees, a canal block in Valley Ranch, a house zoned to schools they'd rather not leave — but have outgrown the square footage. Moving rarely pencils out against today's rates, so the question becomes how to add space that looks as if it were always there: a room addition, a second story, or an accessory suite. Which fits depends on your lot, your HOA, and how the new space ties into a house already resting on Irving's shifting soils.

The ADU question, answered honestly

If you've read about backyard cottages in other cities, hold that loosely for Irving. Whether a fully detached, independently rentable accessory dwelling is allowed on your single-family lot is a zoning question — one to confirm against current City of Irving code, not to assume. What's reliably available are the attached paths: a bump-out or full room addition, a second story over the existing footprint, or an in-law suite under the main roof with its own entrance and bath. A garage or bonus-room conversion is another route; we confirm zoning and any deed restrictions with the city first.

Build out or build up — your lot decides

Building out is usually cheaper per square foot but spends lot coverage and setbacks. Generous parcels in Plymouth Park or parts of Irving Heights may have room to push out; tighter townhome and canal lots in Valley Ranch and Las Colinas make building up smarter. Either way the choice is structural — a new slab must be engineered and doweled into your existing foundation so the two move as one, and a second story needs an engineer to confirm the current slab and framing can carry the load.

Tying new to old, and where the water goes

An addition marries a new slab to one that's been settling for decades — on the expansive clay Eagle Ford shale weathers into across much of Irving, sandier Woodbine soils to the west, and, in the southern corridor, Trinity River floodplain that holds moisture for months. A new wing also concentrates runoff at a new corner, so gutters and grading get reworked to move water away from both houses and a floodplain already prone to saturation.

Permits, the HOA, and one accountable seam

Any change to square footage needs a building permit, including enclosing a patio. It runs through the City of Irving via the MGO portal at MGOconnect.org, and if you intend to do your own trade work, you'll need a homestead exemption already on file with the Dallas Central Appraisal District first. The state-licensed trades pull their own permits for plumbing, electrical, and HVAC; the city runs no weekend inspections. Add the architectural review of a community like Hackberry Creek or the Las Colinas Association, and you have two approval tracks to run. The Remo Guys runs additions out of Allen, about 35 miles away — insured and bonded, a design-build that serves Irving rather than staffing a storefront there, treating the seam between old and new as the whole job since 2019.