Jessica Martinsen · Austin Real Estate

Austin investment property: the tax line is the underwriting line

Why property tax dominates Austin rental math, what the STR licensing regime allows, MUD drag on new-build cap rates, and the annual protest as an operating discipline.

Austin rental underwriting lives and dies on one line most out-of-state spreadsheets underweight: property tax. An investment property gets no homestead exemption - no $100,000 school-tax carve-out and, critically, no 10% cap on assessed-value growth - so the full assessed value rides the market straight into your expense column, and a hot appraisal year flows through to you unbuffered. Underwrite at the parcel's full stacked rate on a realistic assessed value, assume the assessment chases your own purchase price, and treat the annual protest not as an option but as a scheduled operating task with a real expected value.

Short-term rental income deserves adversarial diligence before it deserves a spreadsheet. Austin licenses STRs by category - owner-occupied and non-owner-occupied operate under different rules, and the non-owner-occupied category in residential areas has faced heavy restriction, litigation, and ongoing revision. Hotel occupancy taxes apply on top. The practical rule: confirm what license, if any, is currently obtainable for that exact property and operating model before a single projected nightly rate enters your math - and note the suburbs each run their own regimes, some friendlier than Austin's. A property that pencils only as an STR, in a jurisdiction where the license is not obtainable, is a long-term rental with a hope attached.

Long-term rental math in Austin rewards pessimistic inputs. Vacancy carried at a real number, not the pro-forma 5%; landlord insurance rather than a homeowner quote; capital reserves sized to Texas realities - roofs age fast under hail, air conditioners die young in the heat, slabs move on clay; and make-ready costs between tenants that always exceed the estimate. On new-build rentals in the suburbs, subtract the MUD: an extra half-point or more of district tax on top of an already uncapped bill is pure cap-rate drag that the sales office's glossy pro-forma will not have included.

Texas landlord law is landlord-friendly by reputation and procedurally strict in practice. Security deposits must be accounted for and returned within 30 days of move-out with an itemized deduction list; repair duties for conditions affecting health and safety follow a notice-and-deadline mechanism a tenant can enforce; and late-fee and lockout rules are specific enough that the state bar's form lease, or a local attorney's, beats anything downloaded. Screen consistently and in writing - fair-housing exposure attaches to inconsistency - and if you are managing from out of state, price professional management into the deal you underwrite, not the deal you hope for.

The exit deserves as much design as the entry. Held over years, an Austin rental compounds through the tax bill: every protest won reduces the base your uncapped assessments grow from. Selling later, a 1031 exchange defers capital gains into the next property under rigid identification and closing deadlines that punish improvisation - line up the intermediary before listing, not after contract. And keep the depreciation schedule and every capital receipt organized from year one, because the difference between a clean exit file and a shoebox is measured in real money at exactly the moment you have the least attention to spare.

This page is a planning guide, not a market report. Confirm current prices, taxes, insurance and property facts against authoritative sources before acting on them.

Ask Jessica Martinsen about Austin investment property: the tax line is the underwriting line