Garage door services
Garage addition contractor
A garage addition contractor plans and builds a garage attached to your house.
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Written by HyreGarage Research Desk Primary-source research and fact checking
The short answer
A garage addition contractor plans and builds a garage attached to your house.
Because it shares a wall with living space, the residential code requires fire separation: gypsum board on the garage side and a solid or rated door into the house.
Zoning, the permit and tying the new roof into the old one shape the rest.
Key takeaways
between garage and house (IRC R302.5–R302.6).
is the hard part.
early.
What should I decide first?
and vehicles. Use our size tool.
Changes the fire separation.
to keep fumes out.
What does a garage addition involve?
Setbacks, lot coverage, drawings.
Footings and slab tied to the house.
Joined to the existing structure.
Gypsum board and a compliant house door.
Garage door, electrical, final inspection.
What moves the price
We do not publish addition prices yet. These are what drive them:
| Factor | Why it changes the number |
|---|---|
| Size | Floor area. |
| Roof | Matching the house. |
| Site | Grading and access. |
| Finish | Drywall, insulation, electrical. |
HyreGarage does not publish prices for this job yet: we hold too few sourced, dated quotes. See garage door costs and the quote checker.
Addition or detached garage?
An attached garage is convenient but must be separated from the house. A detached garage keeps fumes and fire risk away.
What to ask before you sign
Who handles them?
How will you meet R302?
How will it tie in?
The full ten-point checklist is on choosing a garage door company.
What to have ready
or survey showing lot lines.
you want to fit.
or plans for them.
Where this goes wrong
PNNL guidance covers sealing an attached garage from the house.
The code sets door requirements between garage and house.
See size research.
The wall that was outside becomes the garage-house wall. It may need new gypsum, sealing and a compliant door.
Get connected
Tell us about the work
Three short steps: the job, your home, and how to reach you. Nothing goes to a garage door company unless you agree.
Free, with no obligation: a person at HyreGarage reads it and replies. Matching is not live yet, so this is not a quote or a dispatch line. If a spring has snapped or the door is off its track, leave it closed and call a local garage door company now.
Find a Garage Door Professional
A person at HyreGarage reads the request and replies. Matching is not live yet, so this is not a dispatch line.
Questions
Do I need a permit for a garage addition?
What fire separation does an attached garage need?
Who builds garage additions?
Can I put a room over the garage?
How long does a garage addition take?
Will an addition change my house insurance?
Written and audited by
HyreGarage Research Desk
Primary-source research, data analysis and fact checking
We are not a garage door company. We read the agency file, the code record, the standards document or the public register ourselves, compute the figure from it, and publish it with the source and the date we retrieved it.
Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. Our own company records cover ten states; nothing national is ever derived from them.
- 10
- states our own company records cover — and the limit of any claim made from them
- 3,901
- garage door companies in the store
- 457
- license records verified against a state board
- 0
- national claims made from a ten-state store
How this desk works
- Primary sources only. Injury counts come from CPSC. Housing counts come from the Census file, not from a summary of it. Code history comes from the building commission that adopted the code. We do not cite an article that cites a source; we retrieve the source and do the arithmetic ourselves.
- Every figure carries its retrieval date. Registers change, datasets are revised and codes are amended. A number without the date it was read cannot be checked, so every study states one.
- Fact, calculation and analysis are labeled apart. A quote is a quote, a HyreGarage computation says so, and an interpretation says “HyreGarage analysis”. Presenting our reading of a dataset as something the agency stated would be the easiest way to lose the only thing this desk is for.
- Limitations go above the fold. If a figure is an upper bound, a bracket, or an association rather than a cause, that is said before the figure is quoted rather than in a footnote underneath it.
- No DIY instructions for spring, cable or track work. Those components hold enough stored energy to cause serious injury, and CPSC records the consequences. We describe what has failed and what a competent repair involves; we do not tell you how to do it.
Authorship on this site is organizational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
Information on this page is general and varies with the door, the opener, local code and circumstance. It is not safety, insurance or legal advice.
Springs and cables hold dangerous stored energy: adjusting or replacing them is work for a trained technician. HyreGarage does not repair, replace or install garage doors.
This page explains the work so you can judge a quote and a company.