Home additions · Fort Worth
Home addition steps in order, in Fort Worth
Nine steps, from the first walk-through to the City’s final inspection, and what your lot allows is settled before anything is drawn.
The order
The home addition process in Fort Worth, step by step
Plan it, permit it, build it. The first five steps happen before any digging starts, and the City inspects the work at each stage of the build.
Plan it
Steps 01–03
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Step 01: Walk the house and the lot with us
We walk the house and the lot together, talk through the space you actually need, and tell you what zoning and setbacks will really allow before you get attached to an idea.
A designer and a builder come out at no charge and with no obligation, and you leave with an honest estimate.
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Step 02: Find out what your lot allows
Zoning also limits where an addition can sit on your lot and how big it can be.
City of Fort Worth
In the A-5 and A-7.5 districts, a house has to sit at least 5 feet from the side and rear lot lines and 20 feet from the front, or 15 on a limited local street.
What decides whether you go up or out? Usually the roof and the lot survey.
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Step 03: Draw the addition, then price it
Our drafting team draws the addition onto your house as it stands, a licensed outside engineer works out the structure, and your detailed budget comes from those drawings.
The elevations show the outside of the house with the addition on it, so you can see the roofline and the windows before anything is built.
Permit it
Steps 04–05
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Step 04: Gather what the City asks for
An addition needs a building permit, and the City asks for more with it than with a remodel: your lot’s plat, a site plan and an engineered foundation plan.
City of Fort Worth
The site plan shows your front, side and rear setbacks and your neighbors’ front setbacks, all dimensioned. An addition over 500 square feet needs an engineer’s seal on the foundation plan. Adding conditioned space or lighting adds energy code compliance documents.
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Step 05: Apply, then answer the review comments
On our additions, our team walks the permit through the City.
City of Fort Worth
The City’s standard is 7 business days to first review comments on a complete application. If the comments ask for changes, the plans are revised and reviewed again.
Build it
Steps 06–09
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Step 06: Stake out, then the foundation
City of Fort Worth
Once the permit is issued, the City’s stakeout inspection (105) checks that the addition sits in the right place on your lot. Underground plumbing and electrical are inspected next, then the foundation (115), all before concrete is poured.
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Step 07: Framing and rough-ins, inspected before the walls close
The walls and the roof go up, then new plumbing, wiring and ductwork run into the new rooms.
City of Fort Worth
The City inspects the sheathing, then the rough-ins, then the framing (110) once the rough-ins are approved, and permitted work has to stay exposed until it’s inspected and approved.
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Step 08: Insulation, then the walls close
City of Fort Worth
Insulation is checked against your energy code compliance report before the walls close.
Then the walls close, and the finishes go in.
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Step 09: Final inspections, then your new space
City of Fort Worth
If your addition has trade permits, their finals come first: electrical (200), mechanical (300) and plumbing (400) finals, then the building final (100), once every related permit is final.
Then it’s yours, built so that in five years nobody can tell which part of the house came later.
Why the order matters
What goes wrong when addition steps happen out of order
A step taken out of order costs you time or money later. It happens in three places.
Drawing before checking the lot
Zoning limits where an addition sits, how tall it is and how big it is. Check that before anything is drawn, so you don’t fall for a plan your lot won’t take.
A plan drawn for no particular house
A stock plan from a catalog is tempting. You can buy one, but it was drawn for no particular house, and a city reviews your addition on your lot.
Pricing from the curb
Whether the foundation extends, whether a bearing wall is in the way, and whether the framing can take a floor above it are answers that come from opening things up, not from the curb. So plan on a contingency of 15 to 20 percent of the budget, for what the existing house turns out to be hiding.
City of Fort Worth
Which permits a home addition takes in Fort Worth
Every addition takes a building permit. Each system you run into it takes its own.
| The part of the addition | The permit | The City’s rule |
|---|---|---|
| The addition itself | The permit: Building permit | Every addition needs a building permit. Zoning can also limit where it sits, how tall it is and how big it is. |
| A new foundation | The permit: Building permit | New foundations and foundation repairs need a building permit and engineered plans. |
| New exterior doors and windows | The permit: Building permit | Replacing or adding exterior doors, windows or burglar bars needs a building permit. |
| A bathroom, a sink or a water heater | The permit: Plumbing permit | Changing, installing, moving or repairing plumbing needs a plumbing permit. |
| Outlets, lights and new circuits | The permit: Electrical permit | Changing, moving or repairing electrical equipment, the electrical service included, needs an electrical permit. |
| Heating and air for the new rooms | The permit: Mechanical permit | Changing, moving or repairing a central heating and air system, ductwork or exhaust fans needs a mechanical permit. |
| A garage turned into living space | The permit: Building permit, and maybe a variance | It needs a building permit, and it may need a variance from the Zoning Board of Adjustment, because it takes away required parking. |
Each permit is separate. In the City’s words:
“Aside from your building permit, you still must obtain all trade permits that are needed separately and schedule inspections as required for each permit type.”
The City’s pages, read November 5, 2026.
Up or out
How long a home addition takes, and what it costs
A bump-out borrows the roof and structure you already have; a second story needs engineering, a staircase, a new roofline and every system re-integrated.
Plan on 3 to 9 months for a home addition with us. Size, and whether we go up or out, decide where yours lands.
Home additions with us run $60,000 to $420,000, construction plus our fee, before permits and contingency: a bump-out at the low end, a full second story at the top. Permits for an addition run $1,200 to $3,500.
Who runs the steps
One company runs every step of your addition
Our designers, our drafting team and our construction crew are one company, Fort Worth’s only one-stop shop.
Our team draws it, walks the permit through the city, and builds it.
We bill Cost Plus, so you see the real cost of materials and labor plus a transparent markup.
These nine steps sit under the three we name on every project: Meet Up, Team Up, Glasses Up.
What is the first step in adding an addition to a house?
Walking the house and the lot with a designer and a builder, so you know what zoning and setbacks allow before anything is drawn. With us, that walk-through is free, with no obligation, and you leave with an honest estimate.
What does the City of Fort Worth need before it issues an addition permit?
An application and a complete set of plans, and with an addition the City asks for more: a copy of your lot’s recorded plat, a site plan showing your setbacks and your neighbors’ front setbacks, and an engineered foundation plan. Over 500 square feet, the foundation plan needs an engineer’s seal. Adding conditioned space or lighting adds energy code compliance documents.
Can work on an addition start before the permit is issued?
No. Every addition needs a building permit, and the City won’t schedule an inspection until the permit is in issued status. The first one, the stakeout, checks that the addition sits in the right place on your lot.
What gets inspected when you build an addition in Fort Worth?
It depends on which permits your addition takes. The stakeout checks where it sits. Then come the underground plumbing and electrical and the foundation, before concrete is poured; the sheathing, the rough-ins and the framing; the insulation, before the walls close; and the electrical, mechanical and plumbing finals, with the building final last.
How long does each step of a home addition take?
We don’t publish a length for each step, because it depends on the addition. Plan on 3 to 9 months for a home addition with us. How long every kind of remodel takes
When do I get a price for my addition?
After the walk-through, you get an honest estimate. When the design is done, you get a detailed budget, built from the drawings. We bill Cost Plus, so you see the real cost of materials and labor plus a transparent markup.
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Your addition
Start with step one
You need more space, but moving means leaving your street.
A designer and a builder walk your house and lot with you, and you leave knowing what your lot allows and which permits your addition will need.
Still deciding? Add on or move: the two numbers to compare