Home · Services · Second-Story Additions

$150,000 – $300,000

Second-Story Additions in Dallas–Fort Worth

Double your square footage without losing your lot — a full second floor added above your existing one-story home.

Second-Story Additions finished project

What it is

Build up when you can't build out.

A second-story addition is the answer when your lot is full but your family isn't done growing. We add bedrooms, a primary suite, or a bonus level above your existing footprint — keeping your yard, your neighborhood, and your address.

It's the most structurally demanding work we do, which is exactly why the plan-first sequence matters: engineering and permits are complete before a single wall comes down.

Before & After

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What's Included

Second-story additions, engineered first.

Structural & foundation review

We verify the existing foundation can carry a new floor — or engineer the reinforcement that lets it.

Engineered floor & load path

Licensed engineering for the new floor system, beams, and a continuous load path to the ground.

Permits pulled — always

The most permit-intensive work in residential. The full package is approved before demolition.

Weather-window sequencing

Roof tie-ins and exposure are scheduled around the forecast. We never open what we can't close.

Matched exterior & rooflines

New stair, windows, brick, and roof tied in so the second story reads as original.

Lived-in protection

We keep main-floor pathways and a working kitchen and bath usable through the build.

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] Two new bedrooms and a primary suite upstairs — and the house still looks like ours."
Sample Client
Second-Story Additions · Southlake
★★★★★
"[Sample] The weather-window scheduling was the difference. They never left the house exposed."
Sample Client
Second-Story Additions · Allen
★★★★★
"[Sample] Permits and engineering were done before demo day. Sixteen weeks later we had a whole new upstairs."
Sample Client
Second-Story Additions · Frisco

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See it in their words.

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Service Area

Second-Story 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 second-story addition cost?

Typically $150,000–$300,000. It's the most structurally involved addition we build, so engineering and the foundation review are a meaningful part of the cost.

Can my foundation support a second story?

Often yes — and where it can't, we engineer the reinforcement that makes it possible. We verify the existing foundation and framing before design is finalized.

Do I need to move out for a second-story addition?

Usually not. We protect the main floor and sequence the roof tie-in around weather so the home stays livable, but some phases are noisier — we tell you the dates in advance.

How long does a second-story addition take?

Plan on 12–16 weeks of design, engineering, and permits, then 16–24 weeks of construction depending on size.

Do you pull permits and handle engineering?

Yes. Second stories are the most permit-intensive work we do; the full permit package and licensed engineering are complete before demolition.

Will it match the rest of the house?

Yes — new stair, windows, brick, and roof are tied in so the second story looks original to the home.

Is there a warranty?

Yes, a written workmanship warranty at closeout plus lien releases from every subcontractor.

Taking Projects for Spring

Ready to build up instead of out?

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