Two houses sit on the same block in Anthony. Same square footage, same era of construction, same asking price around $227,000. One has a Texas mailing address. The other, roughly 200 feet north, is in New Mexico. On the portal they look interchangeable. On a 30 year amortization they are not.
The thesis is simple and buyers usually miss it: in Anthony, the list price is a weaker predictor of monthly cost than which side of Franklin Street the deed sits on. The rate spread between El Paso County and Doña Ana County, combined with New Mexico's cap on how fast a taxable value can rise, quietly restructures the deal.
The line on Franklin Street
Anthony is a single community of roughly 4,500 people split by a state boundary that a resident can step across in a lunch break. A local Realtor with Sandy Messer described it plainly: walking along Franklin Street, one side is Texas and the other is New Mexico. The community straddles the line, has a long agricultural history, and sits on Interstate 10 within 15 miles of Santa Teresa, giving residents close access to Las Cruces, El Paso, and Mexico.
What changes when you cross the curb:
- The taxing county (El Paso County, TX vs Doña Ana County, NM)
- The school district (Anthony ISD vs Gadsden ISD)
- The state's sales tax regime (Texas sales tax vs New Mexico's Gross Receipts Tax)
- Whether the state caps annual growth in taxable value
- The assessor's calendar and appeal windows
Everything above is a line item, not an opinion. That is the point.
Rate math on two identical homes
The single largest driver of the monthly gap is the effective property tax rate. In Otero County along the Texas border in southern New Mexico, the effective rate is 0.51%, well below the 1.73% rate in neighboring El Paso County, Texas. Doña Ana County, which contains the New Mexico half of Anthony, runs slightly higher than Otero but still well under the Texas figure. New Mexico's statewide effective rate is 0.63% and the median annual property tax paid by homeowners is $1,776, nearly $1,500 less than the national median.
Apply those numbers to the local market. Redfin data shows the median sale price of a home in Anthony was $227K over the three months ending April 2026, down 2.5% from the same period a year earlier, with a median price per square foot of $132 and homes selling after 15 days on the market. Assume two buyers, each closing at $227,000, with 10% down and standard escrowed taxes.
| Line item | Anthony, TX side | Anthony, NM side |
|---|---|---|
| Purchase price | $227,000 | $227,000 |
| Assumed effective property tax rate | ~1.73% | ~0.63% |
| Year 1 property tax (escrowed) | ~$3,927 | ~$1,430 |
| Monthly tax escrow | ~$327 | ~$119 |
| Annual carrying-cost gap | reference | ~$2,500 less |
The gap on a $227,000 home is roughly $208 a month before considering insurance, HOA, or homestead exemptions. Over a seven year hold, that is $17,000 to $18,000 in carrying cost, holding everything else equal. The list price is the same. The cash out the door is not.
Texas offsets some of this at the state level. Texas's constitutional ban on state income tax saves residents about $4,418 per year on a $100,000 salary compared to New Mexico's progressive 1.7% to 5.9% rates. For a two earner household with strong wages, the income tax savings can more than cover the higher property tax bill. For retirees or single earner households, it usually cannot. The reader has to price the trade for themselves.
The 3% cap is the sleeper variable
The rate is only half the story. The other half is what happens when the market moves.
New Mexico caps the annual increase in a property's taxable value at 3%, which means that even when home prices are surging, property taxes stay relatively stable. Texas has no equivalent cap on non homesteaded valuation growth, and the homestead cap that does apply is looser than 3%. In practice, a Doña Ana County homeowner who bought at $227,000 in 2026 will see their taxable base climb slowly no matter what happens in the resale market. An El Paso County homeowner across the street will see the appraisal district chase market value more aggressively.
That matters most in two situations. First, in a rising market like the one Anthony saw last year, when median sale price per square foot rose 34.7% year over year, the New Mexico cap compresses the tax bill's response. Second, at resale. A buyer taking title in Anthony, NM inherits a taxable value that resets, so the seller's low tax bill does not transfer. The tax history a listing agent shows is a floor for the new owner, not a promise.
Schools, utilities, and the GRT wrinkle
The district split is a fact of geography, not a ranking. Children in New Mexico attend schools in the Gadsden Independent School District, while those on the Texas side attend Anthony Independent School District. Two homes with the same address suffix can feed different campuses. A buyer with school age children should verify the assigned campus from the district directly, not from the listing.
Utilities are more unified than the tax picture suggests. The Anthony Water & Sanitation District services most of the area and Doña Ana Community College has a modern campus in Anthony that provides general education and workforce development. A single water bill can cross the state line even when the property tax bill will not.
Then there is the sales tax question, which affects renovation budgets more than most buyers realize. New Mexico uses a Gross Receipts Tax instead of a traditional sales tax, with a combined state and local GRT ranging from 7.5% to 9.3% depending on municipality, and unlike most states' sales taxes the GRT applies to a broader range of transactions including many services. A general contractor billing labor and materials on a bathroom remodel in Anthony, NM will typically pass GRT through on the full invoice. The same contractor working on the Texas side is generally billing sales tax on materials only. On a $40,000 remodel, the difference is real money, and it is invisible until the first invoice arrives.
What to verify before you sign
For a serious buyer running the two sides in parallel, the checklist is short and specific:
- Pull the parcel from the correct county appraisal or assessor site (El Paso Central Appraisal District for the Texas side, Doña Ana County Assessor for the New Mexico side) and confirm which taxing units apply.
- Confirm the assigned school campus with Anthony ISD or Gadsden ISD directly, not from the MLS remarks.
- On a New Mexico property, ask the listing agent for the current taxable value and understand that Notices of Valuation are mailed around April 1 each year and inform homeowners of the full value and net taxable value that will drive the tax bill later in the year.
- On a Texas property, request the most recent notice of appraised value and check the homestead cap status, since the cap only applies to owner occupants.
- Ask any renovation bidder to break out GRT or sales tax as a separate line so cross border quotes are actually comparable.
- Model the deal at your household's actual income to see whether Texas's zero income tax offsets the higher property tax for you specifically.
None of this is tax or legal advice. It is the sequence a broker uses to keep two apples-to-apples offers from turning into apples-to-oranges at closing.
FAQ
Does a Texas homestead exemption close the gap with New Mexico?
It narrows the gap for owner occupants but rarely closes it. The El Paso County effective rate remains meaningfully higher than the Doña Ana rate even after standard homestead treatment, and the New Mexico 3% cap continues to compound in the New Mexico owner's favor over time.
If I work in El Paso, does living on the New Mexico side create tax complications?
Wage income is taxed where it is earned and where you reside. A New Mexico resident working in Texas will generally file a New Mexico return on that income. That is a conversation for a CPA, not a broker, and it belongs in your affordability model before you write an offer.
Is the former Dos Lagos Golf Course site relevant to values?
A new park and community center are planned for the site of the former Dos Lagos Golf Club, but construction hasn't started yet. Treat it as a possible future amenity, not a priced-in one.
If you are weighing two Anthony homes and want the tax, district, and carrying-cost math laid out side by side before you write an offer, David Torres International Real Estate will build the comparison with you. Agenda tu consulta.
