House Hacking in San Antonio 2026: Costs and the Catch
Dated note, 25 September 2026: the open Foothold dataset (August 2026 edition, 6.66% model rate, Freddie Mac PMMS week ending July 30, 2026) [1] shows San Antonio $1,851 a month behind renting. This page re-runs the figures at 6.71% (Freddie Mac PMMS, week of September 3, 2026) [2].
The short version: San Antonio is not on the Foothold Index. At June to August 2026 prices and rents, the typical two-to-four-unit building leaves an owner-occupant $1,863 a month worse off than renting comparable space. This page has the prices, the rents, the monthly cost at seven mortgage rates, the income a lender wants to see, the down payment help Texas offers, and the two numbers that would have to move for a house hack here to work.
Can you house hack in San Antonio in 2026?
Not on the typical building at 6.71%. The screen asks one narrow question: can a first-time owner-occupant buy a two-to-four-unit here with an FHA loan, live in one unit, rent the rest, and come out ahead of renting? In San Antonio the answer is no, by $1,863 a month.
The full payment on the typical $374,000 building is about $3,772. The rent the workbook credits for the other unit or units, net of its allowances, is about $955. The $2,817 that leaves you is more than the $954 a one-bedroom rents for.
What would have to change: two numbers, or a little of each.
- The rate. No rate in the 5.00% to 7.50% range closes the gap: even at 5.00% the typical building is $1,505 a month behind renting, so waiting for cheaper money is not the answer here.
- The price. Holding the rent and the rate, the payment has to fall by $1,863 a month. On this page’s model the payment scales with the price, so that is a building near $189,000 rather than $374,000, below the $289,900 entry price, so fewer than one in four of the surviving listings sit under it. That is arithmetic on this page’s own inputs, not a forecast.
- The rent. The same gap closes if the other unit or units bring in about $1,863 more a month after the maintenance and vacancy allowance, or if the home you would otherwise rent costs $2,817 rather than the $954 one-bedroom benchmark this page uses.
How much does a duplex cost in San Antonio in 2026?
Across the San Antonio metro, 338 two-to-four-unit homes were listed when this ran, June to August 2026 [3]. Of those, 209 failed none of my seven checks: a price floor, the FHA loan limit, price per square foot, gross rental yield, neighborhood violent crime, abandoned-property share and the five-year value trend. The prices on this page are from those 209 survivors, not the raw feed.
What the two prices mean: entry ($289,900) is the 25th percentile of the surviving asking prices, the price a quarter of survivors sit below, and typical ($374,000) is the median. Both are asking prices, not sales, and the monthly figures on this page are run on the typical price, not on one building I picked out. The FHA two-unit limit here is $714,000, covered below.
What is the average rent in San Antonio in 2026?
A one-bedroom in San Antonio rents for about $954 a month, the average of Zumper’s and Apartment List’s asking rents for mid-2026 [4]. The model scales that figure by ZIP with HUD’s FY2026 Small Area Fair Market Rents [5], so a building in a cheaper ZIP is measured against a cheaper rent. A two-bedroom is about $1,400 on HUD’s FY2026 small-area fair market rents, the median across 43 ZIPs, and $1,250 on Zumper’s asking-rent data for June 2026.
Why it matters twice: that rent is what you would pay to keep renting, and it is also the yardstick for what the other unit pays you. At that ZIP-scaled rent, the other unit or units on the screened buildings bring in a median of about $997 a month before allowances. I count rent only after a maintenance and vacancy allowance. It is not treated as free money.
What you pay each month living in one unit and renting the rest
The full payment on the typical $374,000 building, with an FHA loan at 3.5% down and a 6.71% 30-year fixed rate [2], is about $3,772 a month including mortgage insurance, property tax and insurance [6].
At ZIP-scaled market rent, the other unit or units bring in a median of about $997 a month across the screened buildings. For the typical building alone, after the vacancy, repair and loss allowances, the model credits about $955, which puts your share of the month at about $2,817, against $954 to rent a one-bedroom nearby. That gap is why renting wins here.
How the mortgage rate changes the gap in San Antonio
| Mortgage rate | Screened buildings, median, per month, versus renting |
|---|---|
| 5.00% | $1,505 behind renting |
| 5.50% | $1,610 behind renting |
| 6.00% | $1,714 behind renting |
| 6.50% | $1,816 behind renting |
| 6.71% (model rate) | $1,863 behind renting |
| 7.00% | $1,934 behind renting |
| 7.50% | $2,055 behind renting |
What this means for you: the rate table above shows how far a lower rate gets you, and on its own it is not far enough. The building has to be cheaper, or the rent higher, before this works in San Antonio.
How much income do you need to buy a duplex in San Antonio?
- Full payment$3,772On the typical building at 6.71%
- Income, front-end guideline$146,009Payment at 31% of gross income
- Income, back-end guideline$105,26243%, with no other debt
- Median household income$78,112What the median household here earns
On the typical $374,000 building the full payment at 6.71% is about $3,772 a month. FHA’s front-end guideline (payment at 31% of gross income) puts that at $146,009 a year. The back-end guideline (43%, with no other debt) puts it at $105,262 [6]. Real approvals land between the two.
The part most buyers miss: an FHA lender can count 75% of the rented units’ rent toward your income when it qualifies you. The median household here earns $78,112 [8].
The assistance test: HUD’s FY2026 low-income limit for the San Antonio-New Braunfels, TX HUD Metro FMR Area, the cap most assistance programs use, is $80,500 for a four-person household and $56,350 for one person [9]. The $146,009 front-end figure above sits $65,509 over that four-person limit. Household size and each program’s own cap decide it.
Down payment and assistance for a San Antonio duplex
Does the 2026 BAH cover a San Antonio duplex on a VA loan?
The short version: Not on the typical $374,000 building. An E-5 with dependents draws $1,869 a month in 2026 BAH for the San Antonio housing area (TX285) [13]. A VA loan on that building costs about $3,699 a month, and the other unit’s rent after allowances brings in about $1,088. That leaves you $2,611 a month, $742 more than the allowance.
None of the five pay grades in the table below closes that gap. On the entry building, $289,900, the payment falls to about $2,946, and the E-5 allowance plus the rent covers it with about $11 to spare.
How I built the VA payment: no down payment. The VA funding fee on a first use with less than 5% down is 2.15% [14], and “You can pay it at closing or roll it into the loan” [15]. Rolled in, the $374,000 building becomes a $382,041 loan. Principal and interest on that at 6.71% over 30 years is about $2,468 a month, with no monthly mortgage insurance [15].
Property tax adds about $483 a month (the 1.55% county rate this page uses) and insurance about $748, the same estimates inside the FHA payment above. The total is about $3,699, against $3,772 on the FHA loan.
The other unit: I take the lower of the two two-bedroom rents on this page, HUD’s $1,400 and Zumper’s $1,250, so $1,250, and count it only after a 5% vacancy and 8% maintenance allowance: about $1,088 a month. The building is the typical two-to-four-unit price treated as a duplex, you in one unit and one unit rented.
| Pay grade | 2026 BAH, with dependents | BAH plus the other unit’s rent, minus the payment, typical $374,000 building | Verdict, typical building | Same test, entry $289,900 building |
|---|---|---|---|---|
| E-4 | $1,728 | -$883 | Does not work here | -$130 |
| E-5 | $1,869 | -$742 | Does not work here | +$11 |
| E-6 | $2,094 | -$517 | Does not work here | +$236 |
| O-1 | $1,905 | -$706 | Does not work here | +$47 |
| O-3 | $2,127 | -$484 | Does not work here | +$269 |
The soft number: about $1,231 of that payment is property tax and insurance, and both are model estimates, not quotes. The insurance line is Texas’s average homeowners premium, multiplied by the model’s 1.71 insurance factor and scaled for price, so a real quote on a specific building is the likeliest way a row in the table changes sides.
The PCS test: does it still pay as a rental when orders come?
Rent both units at $1,250 and keep 87% of each: about $2,176 a month against the $3,699 payment, $1,523 short every month.
On the entry building the shortfall is about $770. As a rental after orders, the typical San Antonio duplex does not carry itself at these prices; it would need a price near $205,000. Property management fees are not modeled, and paying a manager from another duty station widens the gap.
You also “must personally occupy one of them as your home” [15]. Some borrowers pay no funding fee, including those receiving VA compensation for a service-connected disability [14]; without the fee the payment here is about $52 a month lower.
Which bases: the TX285 rates are the ones published for the San Antonio housing area, which serves Joint Base San Antonio (Fort Sam Houston, Lackland, Randolph) [13]. A member who keeps uninterrupted BAH eligibility at one location “will not see a rate decrease” [16]. The 2026 rates were released in December 2025 [16]; this section is re-run the day the 2027 rates post. How every military metro I cover compares.
Renting the other unit to a Section 8 voucher tenant in San Antonio
- The tenant pays a share set from income. The housing authority pays you the rest, up to a cap called the payment standard.
- The payment standard is set by ZIP code. HUD’s FY2027 two-bedroom figure, in effect from October 1, 2026, has a median of $1,410 across the 43 ZIPs this page uses (FY2026: $1,400), and the basic range a housing authority may set runs from 90% to 110% of the published figure: about $1,269 to $1,551 at that median.
- The tenant’s share is capped at move-in. When the rent is above the payment standard, a family moving in cannot take on a share above “40 percent of the family’s adjusted monthly income”.
- The unit passes an inspection first. HUD is moving voucher inspections to its newer NSPIRE standard, but under Notice PIH 2026-18 housing authorities “may continue using HQS as previously defined or other HUD-approved inspection methods as their inspection standards until February 1, 2027”.
The short version: with a Housing Choice Voucher, the tenant pays a share of the rent set from their income and the housing authority pays you the rest, up to a cap called the payment standard [19]. In San Antonio the main voucher agency is Opportunity Home San Antonio [17]. I did not find a current two-bedroom payment standard on the pages I read from Opportunity Home San Antonio, so ask it for the figure that applies to the building’s ZIP [17].
HUD requires housing authorities in this metro to set payment standards from Small Area Fair Market Rents, ZIP code by ZIP code [18]. HUD’s FY2027 two-bedroom figure, in effect from October 1, 2026, has a median of $1,410 across the 43 ZIPs this page uses (FY2026: $1,400) [5], and the basic range a housing authority may set runs from 90% to 110% of the published figure [19]: about $1,269 to $1,551 at that median.
The catch: the payment standard is a ceiling, not an offer. HUD’s rule is that “the PHA may not approve a lease until the PHA determines that the initial rent to owner is a reasonable rent”, judged against rents for similar unassisted units [19]. Its monthly payment is the lower of the payment standard or the gross rent, minus the tenant’s share [19], and when the rent is above the payment standard, a family moving in cannot take on a share above “40 percent of the family’s adjusted monthly income” [19]. A rent well above what similar units nearby get can fail even when it sits under the payment standard.
The inspection: before the lease starts, HUD’s rule requires that “The unit has been inspected by the PHA and passes HQS” [19]; HQS are HUD’s Housing Quality Standards. HUD is moving voucher inspections to its newer NSPIRE standard, but under Notice PIH 2026-18 housing authorities “may continue using HQS as previously defined or other HUD-approved inspection methods as their inspection standards until February 1, 2027” [20].
What Texas law says about voucher tenants: Texas has no statewide protection, and state law limits local ones: “a municipality or county may not adopt or enforce an ordinance or regulation that prohibits an owner … from refusing to lease or rent the housing accommodation to a person because the person’s lawful source of income to pay rent includes funding from a federal housing assistance program” [21]. Source of income is not a federal protected class: the Fair Housing Act’s rental rule lists “because of race, color, religion, sex, familial status, or national origin” [21]. This summarizes what the laws say; it is not legal advice.
One more 2026 fact: in December 2025 HUD recommended that housing authorities “Stop issuing new vouchers (except HUD-VASH and new FYI vouchers)” to keep 2026 costs inside their funding [22]. Fewer new voucher holders may be searching while that lasts, so ask the housing authority whether it is issuing.
| San Antonio voucher basics | As read September 27, 2026 |
|---|---|
| Main voucher agency | Opportunity Home San Antonio |
| Two-bedroom payment standard | Not found on the pages read; ask the housing authority |
| Payment standards set by | ZIP code (HUD requires Small Area FMRs here) |
| HUD FY2027 small-area two-bedroom rent (from October 1, 2026), median of this page’s 43 ZIPs | $1,410 (90% to 110%: $1,269 to $1,551; FY2026: $1,400) |
| Texas source-of-income law | No; since 2015 cities and counties may not add one |
FHA loan limits in San Antonio (2026)
FHA, the Federal Housing Administration, is the loan program that lets an owner-occupant buy a two-to-four-unit building with 3.5% down. It caps how large a loan it will insure, county by county [11].
The San Antonio-New Braunfels, TX HUD Metro FMR Area is above the national floor for 2026, so its limits run higher than the standard ones. The cap rises with the number of units, which matters for house hacking: a duplex gets a higher limit than a single-family house.
| Property size | 2026 FHA limit, San Antonio-New Braunfels, TX HUD Metro FMR Area |
|---|---|
| 1 unit | $557,750 |
| 2 units (duplex) | $714,000 |
| 3 units | $863,100 |
| 4 units | $1,072,600 |
The cap is not the binding check here. The entry price in San Antonio is $289,900, under the two-unit limit, so an FHA loan with the $10,147 minimum deposit reaches it. The typical building at $374,000 also clears it.
How much of San Antonio is two-to-four-unit housing?
The stock is thin by national standards. Two-, three- and four-unit buildings hold 56,357 of the San Antonio metro’s 1,057,823 housing units, 5.3%, on the Census Bureau’s 2020-2024 American Community Survey [12], the 59th-highest share of the 83 metros I track. Those are housing units, not buildings: a duplex counts as two. Supply is not what stops a house hack in San Antonio; the payment against the rent is.
The market behind the numbers: the San Antonio metro has about 2.81 million people, up 10.0% over five years, with unemployment around 4.1% [8]. Rents fell 3.6% over three years and jobs grew 2.5% over the same period. Statewide rental vacancy is 11.0%. Rents fell over three years here, so rent growth is not something this page counts on to close the gap.
What a failed screen does not mean for San Antonio buyers
Nobody should read a failed screen as a reason not to buy in San Antonio, or as a claim that the metro is a bad place to live. The screen asks the one narrow question stated above, and San Antonio failed it.
The way around it: a below-median building, a higher-rent unit, or a local buyer with a renovation budget can beat a metro-level screen. This one is built for someone who has none of those things yet. San Antonio went through the same listing-by-listing screen as the ranked metros; it is the cost-versus-rent bar it did not clear.
What this page does not tell you
- Flood insurance is not modeled anywhere in this analysis. Budget for it separately.
- Condition is not inspected. A cheap building can still be a money pit.
- The rent figure is a market benchmark, not a signed lease. Verify achievable rent on the specific unit.
- An FHA owner-occupant loan requires you to live in one of the units for at least a year.
- Accessory dwelling unit rules for San Antonio are not sourced on this page yet.
Next step
These are San Antonio averages. The specific building you are looking at will not match them — its price, its rent, its payment and the assistance you qualify for are all particular to it.
The First-Property Bundle is how you run that building: six calculators including the house-hack analyzer, the playbook, and a 15-minute workflow for finding the down payment assistance in your own county.
This page stays free either way.
Keep comparing: first-time buyer programs in Texas, and the duplex numbers for Austin, Dallas and El Paso.
Questions people ask about house hacking in San Antonio
Can you house hack in San Antonio in 2026?
House hacking in San Antonio does not clear the 2026 Foothold screen: the typical $374,000 two-to-four-unit building, bought with 3.5% down at 6.71% and rented out except for your unit, costs about $2,817 a month against $954 to rent a one-bedroom, $1,863 a month behind. No rate between 5.00% and 7.50% closes it; a building near $189,000, or about $1,863 more rent a month, would.
How much does a duplex cost in San Antonio?
A duplex in San Antonio costs $289,900 at the entry level (25th percentile) and $374,000 at the median, measured across the 209 two-to-four-unit listings in the San Antonio metro (of 338 listed, June to August 2026) that passed the Foothold screen. Both are asking prices.
What is the average rent in San Antonio in 2026?
Average rent in San Antonio is about $954 a month for a one-bedroom, the average of Zumper and Apartment List asking rents for mid-2026, and about $1,400 for a two-bedroom on HUD FY2026 small-area fair market rents, the median across the ZIPs in this report.
Is it cheaper to own a duplex than to rent in San Antonio?
Owning the typical two-to-four-unit building and renting out the other units costs about $2,817 a month all-in, against about $954 to rent comparable space, so renting is about $1,863 a month cheaper before equity.
How much do you need to put down on a duplex in San Antonio?
The minimum down payment is 3.5% of the purchase price under an FHA loan, about $10,147 on a $289,900 entry building, plus closing costs. TDHCA My First Texas Home (statewide) offers 2% to 5% of the total mortgage loan amount to eligible owner-occupant buyers, and two-to-four-unit homes qualify.
How much income do you need to buy a duplex in San Antonio?
The income needed for the typical $374,000 duplex is about $146,009 a year on FHA’s 31% front-end guideline, or $105,262 on the 43% back-end guideline with no other debt, before a lender counts 75% of the rented units’ rent.
What is the FHA loan limit for a duplex in San Antonio?
The FHA loan limit for a two-unit property in the San Antonio-New Braunfels, TX HUD Metro FMR Area is $714,000 for 2026, against $557,750 for a single-family home and $1,072,600 for four units, per HUD Mortgagee Letter 2025-23.
Why is San Antonio not on the Foothold Index?
The Foothold Index ranks the metros where two-to-four-unit buildings pass seven listing-level checks and then clear a metro-level test on payment to income and the affordability gap. Eight of the eleven ranked metros leave the owner ahead of renting; the other three rank on entry price and durability. San Antonio did not clear the metro-level test. Here the typical building runs $1,863 a month behind renting at 6.71%.
Sources & Methodology
- VanToVault, Foothold Index open data, August 2026 edition (6.66% model rate, Freddie Mac PMMS week ending July 30, 2026), CC BY 4.0; the figure in the dated note is that edition’s kept-per-month for this metro.
- Freddie Mac, Primary Mortgage Market Survey, 30-year fixed: 6.71% is the rate used throughout this analysis, week of September 3, 2026. The rate table re-runs the same screen at each rate.
- Realtor.com and Movoto, 338 active two-to-four-unit listings in the San Antonio metro, June to August 2026, screened for price floor, FHA county limit, price per square foot, gross yield, neighborhood violent crime (CrimeGrade.org by ZIP, anchored to FBI city-level rates), abandoned-property share and home-value trend; 209 survived. Entry is the 25th percentile and typical the median of the surviving asking prices. Redfin does not publish a unit count; the model counts one unit per two bedrooms, rounded, between two and four.
- Zumper and Apartment List, metro one-bedroom asking rents, May to July 2026, averaged; the two-bedroom market reading is Zumper’s asking rent for the month shown.
- HUD, FY2026 Small Area Fair Market Rents (revised): the model scales the one-bedroom rent per ZIP relative to the metro FMR; the two-bedroom figure is the SAFMR median across the ZIPs where surviving listings sit. The Section 8 section also gives the FY2027 figure, from HUD’s FY2027 Small Area Fair Market Rents, effective October 1, 2026.
- HUD, Single Family Housing Policy Handbook 4000.1: FHA 3.5% minimum down payment and MIP schedule; the 31% front-end and 43% back-end qualifying ratios; rental income from the subject property on two-to-four-unit homes (the 75% credit).
- Property tax: the county effective property-tax rate the Foothold model carries for this metro, about 1.55% of price, an estimate and not a tax treatment. Insurance: a state-average annual figure, scaled to price.
- Local economy: unemployment is the BLS metro rate where one is published and the state rate otherwise; rental vacancy is the Census Housing Vacancy Survey state rate; median household income is ACS 2024 one-year (B19013); population is the Census Vintage 2025 metro-area estimate.
- HUD, FY2026 Income Limits (Section 8 schedule), area median income and the 80% limit for the San Antonio-New Braunfels, TX HUD Metro FMR Area, extracted September 5, 2026.
- TDHCA My First Texas Home (statewide), program page, checked August 2026 for two-to-four-unit eligibility.
- HUD, CY2026 FHA forward mortgage limits (Mortgagee Letter 2025-23), one- to four-unit columns for the San Antonio-New Braunfels, TX HUD Metro FMR Area, extracted September 5, 2026.
- U.S. Census Bureau, ACS 5-year 2020-2024, table B25024 (Units in Structure), San Antonio-New Braunfels, TX Metro Area, data.census.gov, pulled September 25, 2026. Counts are housing units, not buildings.
- Defense Travel Management Office, BAH rate lookup: 2026 Basic Allowance for Housing, military housing area TX285 (SAN ANTONIO, TX), with dependents, effective January 1, 2026. Checked September 28, 2026 against DTMO’s 2026 rate file (BAH-ASCII-2026.zip); the published copies at MilitaryCalc and VetCalc agree.
- U.S. Department of Veterans Affairs, VA funding fee and closing costs: 2.15% on a first use with less than 5% down; exemptions (page last updated September 22, 2026).
- VanToVault, Using a VA Loan on a Duplex or Fourplex: occupancy, the 75% lease rule, six months of reserves, documented landlord experience, no monthly mortgage insurance, paying the funding fee at closing or in the loan.
- Department of War release, 2026 Basic Allowance for Housing rates, as posted by Joint Base San Antonio (effective January 1, 2026; the rate-protection rule).
- Opportunity Home San Antonio, landlord page; read September 27, 2026.
- HUD, Designated Small Area Fair Market Rent (SAFMR) Areas (last updated August 2024): “The following 65 metro areas are designated as mandatory SAFMR areas by HUD.”
- Code of Federal Regulations, 24 CFR 982.503 (payment standard basic range), 982.505 (the monthly payment), 982.507 (reasonable rent), 982.508 (the 40% limit at move-in) and 982.305 (inspection before the lease); read September 27, 2026.
- HUD, Notice PIH 2026-18 (July 15, 2026), NSPIRE administrative procedures for voucher programs.
- Source-of-income law: Texas Local Government Code §250.007 (Justia copy); 42 U.S.C. §3604(a); read September 27, 2026.
- NAHRO, HUD Recommends PHAs Cease Issuing New Vouchers (December 23, 2025).
- City of San Antonio, Neighborhood and Housing Services Department; read October 2, 2026.
Data sources: the Foothold listing screen, the metro rent series and the HUD tables above, all as one file on the open data page (CC BY 4.0). Methodology: figures reflect the Foothold model run at the 6.71% model rate (Freddie Mac PMMS, week of September 3, 2026) on listings from June to August 2026, and are estimates for comparison, not an appraisal or a loan quote; taxes and insurance are modeled inputs, not quotes. Verify the numbers on any specific building before making an offer. Last updated: 25 September 2026; listings refresh with the next edition and the rate with the weekly PMMS refresh.
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What would a duplex in San Antonio cost you each month?
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