Freeze Prep for San Antonio Rentals: Winterizing After Uri and Where Landlord Liability Ends

Every San Antonio landlord who owned a rental in February 2021 has an opinion about frozen pipes. Winter Storm Uri broke slab plumbing across Bexar County, drained landlord reserves, and produced a wave of insurance claims that reshaped how carriers underwrite Texas rentals. Uri was not a one-off — the January 2024 arctic blast and multiple sub-freezing stretches since have kept the risk live. If you rent out a house in San Antonio, freeze prep is now an annual maintenance line item, and how you handle it directly controls whether a burst pipe becomes your insurance claim or your tenant's problem.

The short answer on liability: Texas Property Code § 92.052 makes the landlord responsible for conditions that materially affect health and safety, and a house without working heat in a freeze qualifies. But once you've delivered a home that's insulated to a reasonable standard, disclosed shutoff locations, and given the tenant clear winter-storm instructions, liability for pipes that burst because the tenant left for Christmas with the thermostat at 45°F starts shifting the other way.

What Texas law actually requires from the landlord

Section 92.052 obligates a landlord to repair or remedy conditions that materially affect health and safety, provided the tenant gives written notice and is current on rent. Heat in winter is squarely in that bucket — a broken furnace in January is not a five-day repair, it's an emergency. That duty cannot be waived by the lease (§ 92.006), except in narrow circumstances that don't apply to residential heating.

What § 92.052 does not require:

• Insulation to any specific R-value beyond what the house was built with
• Freeze-proof outdoor faucets
• Heat trace on exposed pipes
• Pipe insulation in attics or crawlspaces

Most San Antonio housing stock — especially anything built before 2000 in areas like Beacon Hill, Highland Park, or the older sections of the South Side — was designed for a climate that used to freeze maybe twice a decade. Attic runs are often uninsulated PEX or copper. Hose bibs are rarely frost-free. The code doesn't force you to retrofit, but the economics do: a $12 foam faucet cover prevents a $4,000 slab leak.

The prep checklist that actually matters

Do this in October or early November, before the first cold front. If you use a property manager, get it in writing that it was done and who did it.

• Exposed pipes in the attic, garage, and exterior walls: wrap with foam sleeve insulation. Attic runs above unconditioned space are the #1 burst point in San Antonio homes.
• Hose bibs: install foam covers on every outdoor faucet. Disconnect and drain all garden hoses — a connected hose lets ice back into the sill cock.
• Irrigation backflow preventer: wrap it. These sit above ground and freeze first.
• Water heater in the garage: common in 1980s–2000s SA builds. Insulate the cold and hot lines for the first several feet.
• Pool equipment: if the property has a pool, confirm freeze-protect mode is set on the timer and the tenant knows not to disable it.
• Weatherstripping and attic access: cheap to redo, and it keeps conditioned air where it belongs.
• Locate and tag the main SAWS shutoff: it's usually at the meter near the curb, sometimes at the house. Photograph it. You want the tenant to be able to kill the water in 60 seconds when a pipe lets go.

Document everything with dated photos. If a claim happens, your carrier will ask.

The winter-storm clause your lease should have

TREC doesn't publish a residential lease — that's the Texas Association of REALTORS® (TAR) 2001 form for SABOR members, or an attorney-drafted lease for FSBO landlords. Whatever form you're using, add or confirm language covering:

• Minimum thermostat setting during freeze events — typically 55°F when the tenant is home, 60°F if the property is unoccupied more than 24 hours during a freeze warning.
• Tenant obligation to drip faucets when the National Weather Service issues a hard freeze warning for Bexar County.
• Tenant obligation to report a suspected leak or loss of heat within 24 hours.
• Location of the main water shutoff and confirmation the tenant was shown it at move-in.
• A clear statement that damage caused by tenant failure to follow these protocols is the tenant's responsibility, subject to the tenant's renter's insurance.

None of this overrides § 92.052 — you still have to fix a dead furnace in a freeze — but it establishes the standard of tenant care and matters enormously in a deposit dispute or subrogation fight.

Renter's insurance and requiring it in the lease

Texas doesn't require tenants to carry renter's insurance, but you can require it in the lease and most professionally managed San Antonio rentals now do. A basic HO-4 policy runs $15–25 a month and covers the tenant's personal property plus liability. Critically, it also gives your landlord policy's carrier someone to pursue in subrogation if the tenant caused the loss.

Your landlord (DP-3 or equivalent) policy covers the structure. It does not cover tenant belongings, and after Uri, many Texas carriers added freeze-specific endorsements, higher deductibles for freeze losses, or exclusions when the property was vacant and unheated. Read your declarations page before November, not after.

The CPS Energy and SAWS reality

San Antonio's grid held better than ERCOT's coastal service territories during Uri, but CPS Energy still ran rolling outages, and a house without power for 36 hours in 15°F weather will freeze regardless of thermostat setting. That's the scenario the lease clause needs to anticipate. Practical steps you can require or recommend:

• Open cabinet doors under sinks on exterior walls
• Drip both hot and cold on faucets furthest from the main line
• If power is out and interior temps drop below 45°F, shut off water at the main and open interior faucets to drain the lines

SAWS has a public leak-response line, but during a mass event they are overwhelmed. Your tenant needs to know how to shut off water at the property, not wait for the utility.

What most people get wrong

Assuming a force majeure clause kills the repair duty. It doesn't. Force majeure may excuse timing, but § 92.052 still applies once the emergency passes. If pipes burst on Sunday and it's safe to enter by Wednesday, the clock starts Wednesday.

Charging the tenant for repairs without evidence they caused the loss. If you can't show the tenant ran the thermostat too low, didn't drip, or ignored a warning, you're going to lose that deposit deduction — and under § 92.109 a bad-faith withholding exposes you to three times the wrongfully withheld amount plus $100 and attorney's fees.

Skipping the winterization on a vacant unit between tenants. A vacant house with the water on and no heat is a slab leak waiting to happen. Either winterize it (drain the lines, shut off at the main) or keep the heat on at 55°F and pay the CPS bill yourself. Do not leave it in a half-state.

Relying on the tenant to insulate exposed pipes. That's your job. If the attic has bare PEX and it bursts, arguing the tenant should have foam-wrapped it is not going to work with a JP judge or your insurance adjuster.

Not documenting the move-in walkthrough with the shutoff. Show it, photograph the tenant standing next to it, note it on the inventory and condition form. This is the single cheapest piece of evidence you can bank.

Forgetting the pool. Pool equipment freezes catastrophically and is not usually covered under a standard freeze endorsement. Confirm freeze-protect mode and get it in writing that the tenant will not switch it off.

After the freeze: your repair timeline

Once a tenant reports damage in writing, § 92.052 gives you a reasonable time to repair — usually seven days, though a mass freeze event stretches that under the diligent-effort standard. Keep a log: date reported, plumber contacted, quote received, work scheduled, work completed. If the tenant is displaced by the damage, § 92.054 governs abatement of rent and lease termination options depending on whether the property is totally or partially unusable.

Do not let a tenant self-repair and deduct without following § 92.0561 exactly — the statutory notices and dollar caps are strict, and a tenant who skips them can't legally deduct from rent.

Where to go from here

If you're actively renting out a San Antonio home, put winterization on your calendar the same week you swap HVAC filters — before Halloween is the right target. If you're still shopping for a rental to add to your portfolio, browse listings and neighborhood data on HomeFinder at /rentals, or list your own rental free at /list-your-home. When the exposure is bigger than you want to manage alone, /agents will connect you with a San Antonio property manager who handles the seasonal prep as part of the monthly fee.