Home · Services · Room Additions

$80,000 – $200,000

Room Additions in Dallas–Fort Worth

A new family room, home office, bedroom, sunroom, or guest suite — added to your existing footprint and built to The AG Standard.

Room Additions finished project

What it is

More room, without leaving the home you love.

A room addition extends your existing single-story footprint — a bright family room off the kitchen, a quiet home office, an extra bedroom, a sunroom, or a guest suite. It's the most direct way to add the space your family has outgrown.

We tie the new structure into your existing rooflines, match the exterior, and route electrical and HVAC so the addition reads as original to the house — not bolted on.

Before & After

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AfterBefore BeforeAfter

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What's Included

Every room addition, scoped end to end.

Layout & design drawings

Floor plans and 3D renders signed off before demolition — never a moving target.

Structural engineering

Licensed engineering for new loads, beams, and the tie-in to your existing structure.

Permits pulled — always

The full permit package approved before we break ground. No exceptions.

Matched rooflines & exterior

Brick, siding, and roof tied in so the addition reads as original to the home.

Electrical, HVAC & finishes

Mechanical routed and finishes selected with you — lighting, flooring, paint, trim.

Dust-controlled, lived-in build

Main-house pathways protected and a working kitchen and bath kept accessible throughout.

How We Work

Built to The AG Standard.

Five phases, every project — so there are no surprises, delays, or finger-pointing. See the full Standard →

1

Discovery

Walkthrough & feasibility report. No quote pressure.

2

Architectural Planning

Drawings, engineering, and permits in hand.

3

Selections & Design

Finishes chosen; budget, schedule & scope locked.

4

Construction

Dedicated PM, daily updates, 24/7 schedule tracking.

5

Closeout & Warranty

Walkthrough, lien releases, written warranty.

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What families say.

★★★★★
"[Sample] The new family room looks like it was always there. They hit every date on the schedule."
Sample Client
Room Additions · Southlake
★★★★★
"[Sample] Permits were approved before anyone showed up with a hammer. On budget, no surprises."
Sample Client
Room Additions · Allen
★★★★★
"[Sample] One project manager, daily updates, and the dust never reached the main house."
Sample Client
Room Additions · Frisco

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See it in their words.

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Service Area

Room Additions across Dallas–Fort Worth.

We serve families throughout the DFW metroplex. Each city has its own page with local permitting notes and recent projects.

Dallas–Fort Worth homes we serve

Explore

Other ways we add space.

FAQ

Common questions.

How much does a room addition cost in Dallas–Fort Worth?

Most room additions run about $80,000–$200,000. The number depends on square footage, whether you're adding plumbing, the roof tie-in, and finish level. We give a real estimate after a walkthrough — see our DFW cost guide.

Do I need a permit for a room addition?

Yes. Room additions require a building permit and structural engineering. We pull the full permit package and complete engineering before demolition — always. More on permits.

How long does a room addition take?

Plan on roughly 8–16 weeks of design, engineering, and permitting, then 12–20 weeks of construction. The planning weeks are exactly what keep the build on schedule.

Can I stay in my home during the addition?

Yes. We scope the build around your routine and keep a working kitchen and bathroom accessible the whole time, with dust controlled at the construction line.

Will the addition match my existing house?

Yes. We tie into your rooflines and match brick, siding, and trim so the addition reads as original — not bolted on.

Do you handle design and engineering, or just construction?

Both, under one contract. Architectural drawings, 3D renders, structural engineering, and permits are all part of our process — no hand-off gap.

Is there a warranty?

Yes — a written workmanship warranty is issued at closeout, along with lien releases from every subcontractor.

Taking Projects for Spring

Ready to add the room your family needs?

A real conversation about scope, schedule, and price — we respond within four business hours.