i30 Builders · Residential
Room Additions, Sunrooms and Garage Conversions in DFW
Closing in a covered patio as a sunroom, converting a garage, screening a porch, or building from the slab up to a Certificate of Occupancy.
Written scope and locked price before any deposit · One-year workmanship warranty
Free site visit · written scope · lump-sum price
Rated 5.0 on Google$1M GL + $1M Umbrella1-year workmanship warranty

Get a written estimate
Four fields. We call back within one business day to set up the site visit.
- GL + umbrella coverage
- $1M + $1M
- Workmanship warranty
- 1-yr
- Cities served
- 33
Who builds room additions, sunrooms and garage conversions in Dallas-Fort Worth?
i30 Builders, a general contractor based in Royse City, TX, builds room additions, sunrooms, screened porches and garage conversions for homeowners across Dallas-Fort Worth, centered on Rockwall, Collin, Hunt and Kaufman counties. The work runs from closing in a covered patio to building from the slab up to a Certificate of Occupancy. The work is priced from published rates and written into a scope before any deposit, with permits handled.
- Pricing
- Published rates, written scope before any deposit
- Permits
- Handled by us
- Warranty
- One-year workmanship warranty, in writing
- Where
- Dallas-Fort Worth, centered on Rockwall, Collin, Hunt and Kaufman counties
- Cost guide
- Additions cost
Updated
The Work
A patio we closed in, before and after.




Start Here
An enclosure and an addition are not the same job.
Closing in a covered patio inherits three walls, a roof and a slab that are already there. A true addition builds all of them. That is most of the cost difference, and it is structural rather than a discount.
So they are priced separately here. The cheap number belongs to the cheap scope, and quoting it on the expensive one is how a project ends in a change order argument.
If your covered patio is sound and the roof is already over it, this is the most square footage you will add to a house for the money.
Published Rates
Room Additions, Sunrooms and Garage Conversions pricing
All-in, covering labor, materials, normal mobilization, protection of the areas we work around, coordination and cleanup. These are budgeting standards, not a quote: the number on your contract comes from a site walk.
| Scope | Rate | Project minimum | What it covers |
|---|---|---|---|
| Patio enclosure to conditioned space | $95/SF | Project minimum: $12,500 minimum | Framing, windows, door, matching siding, mini-split, insulation, drywall, LVP, trim. |
| Ground-up build, phased | Phased contract | Project minimum: $100,000 minimum | Design through Certificate of Occupancy in seven phases, priced on the plan set. |
The full cost breakdown, with what each band buys and where it stops.
Already in the price
- A structural header wherever a post or a wall comes out
- Siding matched to the house rather than whatever is closest at the supply yard
- Conditioned means conditioned: a mini-split on its own circuit, not a space heater
- Insulation, drywall taped bedded and textured to match the existing walls
- Permit filing, inspections and the punch list before final payment
- One-year workmanship warranty
How we quote it
A site walk, then a written scope back within five business days. The scope names the work, the materials and the price, and the price does not move unless the scope does.
Anything found behind a wall or under a slab that changes the work gets priced and approved before we touch it. That is a change of work, in writing, not a surprise on the final invoice.
Payment is by ACH, card, check or cash, on the schedule written into the contract.
What Moves the Number
Up and down, before you ask for a quote.
Pushes price up
- Building new walls and a new roof rather than closing in what is standing
- Moving or removing a structural post, which brings in a header and an engineer
- Matching an older siding profile that is no longer made
- Data, dedicated circuits, or a panel that is already full
- Slab work, because under-slab plumbing has to be right before the pour
- A Certificate of Occupancy, which is a different inspection track than a remodel permit
Keeps price down
- An existing covered patio with a sound roof and slab
- Keeping the existing exterior door and resetting it rather than buying a new unit
- Fixed windows instead of operable ones
- LVP and painted drywall rather than a high finish package
- Taking power from a panel with room in it
Common Questions
Additions questions, answered
What does it cost to close in a covered patio?
Ninety five dollars per square foot with a $12,500 project minimum. That covers demo of the existing patio conditions, a structural header where a post comes out, and enclosure framing. It also covers windows and an exterior door, siding matched to the house, a mini-split on a dedicated circuit, and data runs. Then insulation, drywall taped bedded and textured, paint, LVP and baseboards, trim-out and the punch list.
Why is an enclosure cheaper per square foot than an addition?
Because three walls, a roof and a slab are already built and paid for. An enclosure fills in between them. An addition has to pour a foundation, frame walls, set a roof and tie all of it into the existing structure, which is most of the work before any finish goes in. The two are priced separately here so the enclosure number never gets quoted on addition scope.
Will it feel like part of the house?
That is the test we build to. Siding matched to the existing exterior, drywall textured to match the adjoining walls, baseboards and trim carried through, and a mini-split on its own circuit so the room holds temperature like the rest of the house rather than being the one nobody sits in during August.
Is a patio enclosure the same as a sunroom?
For most people, yes: a covered patio closed in with windows, insulated, and conditioned so it is usable all year. That is the $95 per square foot enclosure band above. What some companies sell as a sunroom is a glass or aluminium kit bolted to the house, which is cheaper and is not conditioned space. Ours is framed, insulated and finished to match the house, with a mini-split so it holds temperature in August.
Do you do garage conversions?
Yes. A garage already has walls, a roof and a slab, so a conversion is closer to an enclosure than an addition, but it has its own work: the garage door opening framed in and sided to match, the slab checked for level and moisture before any flooring, insulation in walls that never had it, and conditioning. We quote it from the walk rather than at the enclosure rate. Check your HOA and the city's parking rules early, because some require the driveway to still lead somewhere.
Do you do ground-up builds?
Yes, in seven phases from design, engineering and permits through foundation, framing and dry-in, systems rough-in and exterior, insulation and drywall, finishes, and final inspections to Certificate of Occupancy. It is priced on the plan set rather than per square foot, with a $100,000 project minimum, and each phase is billed as it starts.
Do you build screened porches?
Yes, either by screening in a covered patio that is already there or by building the porch and its roof new. A screened porch is not conditioned space, so it is not priced at the enclosure rate: it skips the insulation, drywall and mini-split, and has its own details instead, a knee wall or not, the screen system, the door, and the ceiling and fan. We quote it from the walk. If you think you may want to close it in later, say so, because framing it for glass now is cheaper than reframing it then.
Does an enclosure need a permit?
Yes. Turning covered outdoor space into conditioned living space changes the use, the insulation envelope and usually the electrical, all of which an inspector signs. We file it and schedule the inspections. If your scope also removes a structural post, the header gets engineered before anything is cut.
Keep reading
Read before you build
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