The Texas Home Repairs You Are Not Allowed to Do Yourself

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By Jimmy Hall · Texas homeowner, not a contractor · Last reviewed September 2026 · How we research

Texas does not license general contractors. Anyone in this state can print a business card that says “remodeler” and start taking money. That surprises people. What surprises them more is which specific jobs are tightly regulated, and how little the rules match common sense.

There is a version of this article on every home improvement site, and most of them are wrong in the same way: they treat “you can DIY this” and “you do not need a permit” as the same sentence. In Texas they are not. Getting that distinction wrong is how a weekend project turns into a torn-out wall and a failed inspection.

Texas regulates this in three separate layers

Almost every mistake in this area comes from confusing them.

• State licensing law decides who is allowed to do the work at all, and who may be paid for it. This lives in the Texas Occupations Code.
• Building code decides what the finished work has to comply with. Texas has no statewide permit system, but Local Government Code §214.212 makes the International Residential Code the municipal residential standard statewide, which cities may then amend.
• City ordinance decides whether you need a permit, an inspection, and sometimes a registration. This is the layer that actually catches homeowners, and it overrides several of the state exemptions below.

The single most important sentence in Texas DIY law is this one, from Occupations Code §1302.052:

Work performed by a person who is exempt from this chapter is subject to any permit, inspection, or approval required by a municipal ordinance.

Read that twice. A state licensing exemption is not a permit exemption. Being allowed to do the work yourself does not mean you may do it unannounced.

Plumbing: you can, in your homestead, and the word matters

Plumbing is licensed under Occupations Code Chapter 1301 by the Texas State Board of Plumbing Examiners — not TDLR. The homeowner exemption is a single sentence, §1301.051:

A property owner is not required to be licensed under this chapter to perform plumbing in the property owner’s homestead.

Note what it does not say. There is no square-footage cap, no dollar limit and no list of approved tasks. On the face of the statute it is a complete licensing exemption. But the trigger word is homestead, which is a specific legal status in Texas — not simply “a house you own.” A rental, a flip, a second home or anything held for sale or lease gets no exemption at all.

And the permit still applies. Every major DFW city requires one to replace a water heater. Dallas will let a homesteader pull that permit and do the work, but says plainly that the homeowner must still meet every state rule and city code. Plano lists water heaters, furnaces, air conditioners, re-roofs and fences as permit work, exempting only things like swapping a faucet washer or a light switch.

If you are weighing this one up, our water heater replacement cost guide covers what the permit and the licensed plumber actually add to the bill, and why the cheapest quote is often the one that skips both.

One piece of stale internet advice worth killing: the Plumbing Board was scheduled for abolition in 2019 and survived by executive order. It has since been continued twice. Under current law it exists until September 1, 2033. It was never folded into TDLR.

Electrical: the exemption that cancels itself

Electrical work is TDLR’s, under Chapter 1305. There is a homeowner exemption at §1305.003(a)(6), and it contains a clause that most articles quietly drop. It exempts:

work not specifically regulated by a municipal ordinance that is performed in or on a dwelling by a person who owns and resides in the dwelling.

That middle clause is the whole thing. The electrical homeowner exemption evaporates the moment a city ordinance regulates the work — and in any incorporated DFW city, essentially all electrical work is regulated by ordinance. TDLR says so itself: municipal regulations may override these exemptions.

What that looks like in practice:

• Dallas lets a homeowner pay for an electrical permit on a homesteaded property, but will not let them do the work unless they have passed a homeowner’s exam.
• Fort Worth is blunter. Its homestead affidavit states that homeowners may not work on the service at all — that work must be permitted and performed by a Master Electrician.
• Arlington also tests homeowners and caps them at three new branch circuits; Plano and Irving do not test at all. Every DFW city we have checked, side by side.

The code just changed, and most advice online is now out of date

Texas adopted the 2026 National Electrical Code effective September 1, 2026. If you are reading anything that cites NEC §230.85 for the outdoor emergency disconnect, that section no longer exists — the 2026 edition deleted it and moved the requirement into §230.70(A)(1), with the replacement trigger now at §230.70(E).

The requirement itself survived, and it is the one that blows up panel budgets. Replacing service equipment on a one- or two-family dwelling forces a readily accessible outdoor disconnect, with durable red-background, white-lettering labels at least half an inch high. A handwritten label fails. This is why a panel upgrade quoted from an old price list always comes in high — see our electrical panel upgrade cost guide for what that adds in DFW.

Transition rule, if you are mid-project: unpermitted work follows the code in force when installation began; permitted work follows the code in force when the permit was issued.

Air conditioning: allowed by Texas, blocked by the EPA

Texas exempts a homeowner under Occupations Code §1302.053 for work in a building owned solely by the person as the person’s home. “Owned solely” is doing real work there — a property held in an LLC, jointly owned with someone who does not live there, or rented out, does not qualify. Fort Worth then narrows it further: homeowners may do ductwork only, not equipment installs.

But the wall is federal, not state. Under 40 CFR §82.154(c), refrigerant for home AC — R-410A and R-454B included, which is to say whatever is in your system — may only be sold to EPA Section 608 certified technicians or the businesses that employ them. And the rule is not only about buying. The definition of “technician” in §82.152 covers anyone whose work could open the refrigerant circuit, owners of the equipment included, and EPA’s homeowner guidance puts it in one line: “Section 608 Certification is required to recharge appliances.”

The only refrigerant an uncertified consumer can buy is small cans of car AC refrigerant — two pounds or less, self-sealing valve, for vehicles only — or refrigerant sealed inside pre-charged equipment. So a Texas homeowner may lawfully do plenty of their own AC work — ductwork where the city allows it, thermostats, filters, condensate drains — but opening the refrigerant circuit takes a 608 certificate. Nothing stops a homeowner from earning one; without it, “topping it up yourself” is not an option. The full breakdown, including the kits sold online.

Mold: the rule is the opposite of what you have been told

This one is worth reading carefully, because nearly every article gets it backwards.

Texas licenses mold remediation under Occupations Code Chapter 1958, and there is a well-known threshold: 25 contiguous square feet. Most articles tell homeowners that above 25 square feet they must hire a licensed remediator. That is not what the rule says for your own home.

Section 1958.102(e) exempts an owner performing mold remediation on residential property they own with fewer than ten dwelling units, and the administrative rule at 16 TAC §78.30(b) states that this exemption applies regardless of the total surface area affected by mold growth. The 25-square-foot threshold binds other people working on your house. It does not bind you in your own home.

So legally you may. Here is why you probably should not.

Only a licensed remediator can issue a Certificate of Mold Damage Remediation under §1958.154. And Texas Insurance Code §544.303 bars an insurer from making an underwriting decision based on previous mold damage where the property was remediated as evidenced by that certificate. The step-by-step version, including who the protection does not cover: can you remove mold yourself in Texas?

Follow the chain. You remediate it yourself, legally. No licensed remediator was involved, so no certificate exists. Without the certificate you have lost a statutory protection against being non-renewed or refused coverage over that mold. Doing it yourself strips you of an insurance protection the law would otherwise have given you.

There is a partial fallback: §544.303 also accepts an independent assessor or adjuster inspecting and finding no evidence of mold damage. So if you have already done the work, paying for an independent assessment afterwards recovers some of the ground.

One more thing people miss. Under §1958.154(b), when you sell, you must hand the buyer every mold remediation certificate issued for the property in the preceding five years. Our water damage and mold remediation cost guide goes deeper, including the rule that the company assessing your mold cannot be the company that removes it — that is §1958.155, and “we’ll test it and then fix it” is a red flag, not a package deal.

Gas: where we will not give you a clean answer

Gas piping counts as plumbing in Texas — §1301.002(7) defines plumbing to include piping used to supply or distribute gas. On a plain reading of the statute, the §1301.051 homestead exemption therefore covers gas work in your own homestead.

Industry sources say the opposite, and assert that gas is carved out. We could not verify that claim against any Plumbing Board rule, publication or statutory provision, and we are not going to repeat it as though we had.

So here is the honest position: the statute appears to permit it, the sources conflict, and we would still tell you not to. Not on a legal argument, but on consequence. The permit and inspection apply regardless, many cities will only issue a gas permit to a licensed plumber, and the utility has to re-establish service after a pressure test on its own terms. If you want it settled, call the Plumbing Board and ask directly.

Roofing is not licensed in Texas at all

There is no state roofing licence. The industry association’s own credential is explicitly voluntary self-regulation. Anyone may legally roof a house in Texas.

The law bites elsewhere. Business and Commerce Code §27.02 makes it an offence for a seller of goods or services to pay, waive, absorb or rebate a homeowner’s insurance deductible, or to help them avoid paying it. Contracts of $1,000 or more expected to be paid from insurance proceeds must carry a specific notice in 12-point bold. It is a Class B misdemeanor.

And a correction, because this one is repeated everywhere: the homeowner does not commit a crime by accepting a waived deductible. Language creating an offence for the insured appeared in the introduced version of the 2019 bill and did not survive into the enacted text. The offence is the contractor’s. What binds you is civil: Insurance Code §707.002 requires you to pay your deductible, and §707.004 lets your insurer withhold replacement cost until you show proof you did — a cancelled cheque, a card statement, an installment plan.

Separately, Insurance Code §4102.163 bars a contractor from acting as a public adjuster on a property they are also doing the work on. A roofer who offers to “handle your claim” is describing something they are not allowed to do.

Our roof replacement cost guide covers the deductible arithmetic, and the wind and hail deductible calculator will show you what a claim actually pays before you call anyone.

Five that catch people completely off guard

• Sprinkler systems are licensed — by the environmental agency. You may not sell, design, install, repair or even consult on an irrigation system in Texas without a TCEQ licence. Homeowners are exempt on their own home, but must still meet the technical standards including backflow prevention. Rentals are not exempt, and Plano requires irrigation contractors to register with the city on top of the state licence.
• Septic: you can install your own, but you cannot evaluate your own site. A single-family homeowner may install or repair their own on-site sewage facility — but the site evaluation must be done by a licensed site evaluator or professional engineer, a permit and approved plan are required first, and if you pay anyone to help with any portion, that person must be a licensed installer.
• Water wells: the licensing definition excludes a person drilling on their own property for their own use, so a landowner may drill and may plug an abandoned well themselves. Local groundwater conservation districts often add their own registration and spacing rules, so check yours.
• Pools, in the opposite direction. The Texas pool-yard enclosure statute in Health and Safety Code Chapter 757 applies only to multiunit rental complexes and property owners associations — not to a private single-family pool. Your fence requirement comes from the building code as adopted locally. And Dallas expressly excludes swimming pools from its homeowner registration exemption, so you cannot self-permit one there.
• Asbestos, also backwards. The Texas Asbestos Health Protection Act regulates “public buildings,” and the definition expressly excludes a private residence and apartment buildings of four units or fewer. State asbestos licensing does not reach your house. That is emphatically not the same as it being a good idea — federal rules and landfill disposal requirements still apply.

What actually happens if you skip the permit

Let us be precise here, because this is where consumer articles start inventing things.

What is real

• Municipal penalties. Local Government Code §54.001 caps ordinance fines at $500, rising to $2,000 for ordinances governing fire safety, zoning, and public health and sanitation. Cities can also bring a civil action to enforce building, electrical and plumbing ordinances.
• Tear-out. The realistic outcome is not a courtroom. It is a stop-work order, a failed inspection, and being told to open the wall back up and do it again.
• State licensing penalties exist and are real — unlicensed plumbing is a Class C misdemeanor with administrative fines up to $5,000 per violation per day, and TDLR treats unlicensed electrical or HVAC work as a $2,000 to $5,000 violation. But these mostly target people doing work for others. A homeowner properly inside an exemption is not the target.
• Resale. Property Code §5.008 requires a written seller’s disclosure covering items in need of repair and known defects. Concealing defective unpermitted work is where fraud exposure comes from.

What is not as solid as people claim

You will read constantly that your insurer will deny a claim because work was unpermitted or done by the homeowner. We could not find a Texas statute or Department of Insurance rule that says so. Every source asserting it is a blog or a contractor marketing page.

What is true is narrower: Texas homeowners policies generally contain faulty workmanship exclusions, and that is policy language — a contract question, decided policy by policy, not a matter of Texas law. It is a real risk. It is not the legal rule it gets presented as.

The one place where the law itself ties DIY work to an insurance outcome is mold, and we covered it above. That one is statutory, and it is the reason mold is the job on this list we would most strongly tell you to hand over.

The short version

You may do more of this yourself than you probably think, and in fewer places than you think without telling the city. Plumbing in your own homestead, electrical where your city has not regulated it, HVAC on a home you solely own, mold in any quantity in your own house. What you cannot do is buy refrigerant, adjust your own insurance claim through a contractor, or skip the permit because the state said you were exempt.

If the job in front of you is big enough that you are reading this to decide, try the repair or replace decision tool first, and the relevant cost guide second. The permit is rarely what makes a job expensive. Doing it twice is.

This is general information about Texas law, not legal advice, and city rules change. Verify with your municipal building department and the relevant state agency before you start. We are not lawyers.