Homes Under $400K in San Marcos, TX

263 active homes under $400k in San Marcos, TX · The median list price in San Marcos is $335,000.

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Motivated SellerNew Construction

$215,999

341 Navidad River DR, San Marcos TX 78666

MLS #246416175 · Keller Williams City-View · Christopher Marti

4 bd·2 ba·1,676 sqft

Quick Move-In

Motivated SellerNew Construction

$226,999

331 Navidad River DR, San Marcos TX 78666

MLS #246414665 · Keller Williams City-View · Christopher Marti

4 bd·2 ba·1,859 sqft

Quick Move-In

Motivated SellerNew Construction

$305,999

136 Little Prairie VLY, San Marcos TX 78666

MLS #246398684 · Keller Williams City-View · Christopher Marti

4 bd·3 ba·2,669 sqft

Quick Move-In

Motivated SellerNew Construction

$223,999

328 Trinity River HOLW, San Marcos TX 78666

MLS #246398685 · Keller Williams City-View · Christopher Marti

3 bd·2 ba·1,484 sqft

Quick Move-In

New Construction

$281,464

253 Elk Ave, San Marcos TX 78666

MLS #246390221 · ERA Experts · Matt Menard

3 bd·2 ba·1,454 sqft

Quick Move-In

Price Cut

$310,000

104 Ladolia LN, San Marcos TX 78666

MLS #246321370 · Berkshire Hathaway Premier · Kaleb Yates

3 bd·2 ba·1,821 sqft

$249,000

606 Harmons WAY, San Marcos TX 78666

MLS #246309961 · The Damron Group REALTORS · Jodi Adams

3 bd·2 ba·1,874 sqft

$335,000

134 E Hillcrest DR, San Marcos TX 78666

MLS #246298287 · Clear River Real Estate Sales · Stephen Jones

3 bd·2 ba·1,526 sqft

Motivated Seller

$305,000

104 Cypress Hills RD, San Marcos TX 78666

MLS #246301380 · eXp Realty LLC · Dayton Schrader

4 bd·3 ba·1,963 sqft

Price CutNew Construction

$268,310

820 Cardenas ST, San Marcos TX 78666

MLS #246223798 · ERA Experts · Matt Menard

3 bd·2 ba·1,644 sqft

Quick Move-In

Motivated Seller

$150,000

246 Trestle Tree, San Marcos TX 78666

MLS #246232485 · Stoker Realty · Scott Stoker

2 bd·2.5 ba·1,266 sqft

New Construction

$301,153

252 Elk Ave, San Marcos TX 78666

MLS #246234123 · ERA Experts · Matt Menard

3 bd·2 ba·1,734 sqft

Quick Move-In

Price Cut

$349,990

112 Bouldin Acres PASS, San Marcos TX 78666

MLS #246199329 · DRB Group Realty, LLC · Chaquia Thomas

5 bd·3 ba·2,009 sqft

Motivated SellerNew Construction

$238,999

133 Navidad River DR, San Marcos TX 78666

MLS #241151110 · Keller Williams City-View · Christopher Marti

4 bd·2 ba·2,193 sqft

Quick Move-In

Price Cut

$319,990

140 Bouldin Acres PASS, San Marcos TX 78666

MLS #246177434 · DRB Group Realty, LLC · Chaquia Thomas

3 bd·2 ba·1,690 sqft

New Construction

$365,986

134 Cogitare LN, San Marcos TX 78666

MLS #246180552 · ERA Experts · Matt Menard

4 bd·2.5 ba·2,285 sqft

Quick Move-In

New Construction

$374,708

115 Blackfoot Daisy PATH, San Marcos TX 78666

MLS #246185109 · ERA Experts · Matt Menard

4 bd·2.5 ba·2,408 sqft

Quick Move-In

New Construction

$348,151

141 Cogitare LN, San Marcos TX 78666

MLS #246185121 · ERA Experts · Matt Menard

4 bd·2 ba·1,977 sqft

Quick Move-In

Price CutNew Construction

$274,370

805 Cardenas ST, San Marcos TX 78666

MLS #246186381 · ERA Experts · Matt Menard

3 bd·2 ba·1,726 sqft

Quick Move-In

Price Cut

$339,990

144 Bouldin Acres PASS, San Marcos TX 78666

MLS #246089620 · DRB Group Realty, LLC · Chaquia Thomas

4 bd·2 ba·2,009 sqft

Price Cut

$339,990

116 Bouldin Acres PASS, San Marcos TX 78666

MLS #246078884 · DRB Group Realty, LLC · Chaquia Thomas

3 bd·2 ba·1,800 sqft

Price Cut

$354,990

136 Bouldin Acres PASS, San Marcos TX 78666

MLS #246056320 · DRB Group Realty, LLC · Chaquia Thomas

4 bd·2 ba·2,080 sqft

Price Cut

$379,990

125 Pella PASS, San Marcos TX 78666

MLS #246057577 · DRB Group Realty, LLC · Chaquia Thomas

5 bd·3 ba·2,802 sqft

Fixer-Upper

$279,000

1306 Alamo ST, San Marcos TX 78666

MLS #246038150 · Donald W Graham, Broker · Don Graham

3 bd·1 ba·1,335 sqft

About Homes Under $400K in San Marcos, TX

Setting a price ceiling is one of the most useful ways to shop, and there are 263 homes for sale under $400K in San Marcos on the market right now, drawn from live MLS data — so you're seeing what's actually available in your range, not a stale list. How far a $400K budget goes depends on the San Marcos market, and the quickest gauge is the median list price shown above: when your ceiling is below the local median you're shopping the lower-priced end of the local market, and when it's near or above the median you're looking at a large share of what's available. Within a $400K budget you'll typically find a mix of property types — houses, condos, and townhomes, and in some areas newer construction — across different sizes, ages, and neighborhoods, so the trade-offs between them are where the real choice lives. You can filter the homes and houses for sale under $400K in San Marcos by beds, baths, and features to narrow the list, and open any listing for its full details and price history. Because HomeLocating is an independent home-search platform — not a national portal — you get a neutral, MLS-sourced view of what $400K actually buys in San Marcos today.

Buying a Home Under $400K in San Marcos

Shopping with a $400K ceiling in San Marcos works best when the number is real, so a few things are worth doing before you tour. Start with a lender: getting pre-approved tells you what you can actually borrow and what your monthly payment looks like at $400K, which is often different from a round budget in your head. Remember that the list price isn't the whole cost — property taxes, any HOA or MUD dues, and insurance all factor into what a home under $400K really costs each month, so it's worth looking at the full number. Within a fixed budget, the choice usually comes down to trade-offs: size, location and commute, the age and condition of the home, and new construction versus resale — deciding which of those matter most to you makes comparing homes far easier. And well-priced homes in a given range can move quickly, so knowing your criteria in advance helps you act when the right one appears. None of this is financial advice, and HomeLocating is not a lender — but it's what keeps a budget from being a guess. Through HomeLocating, you can get help finding and buying a home under $400K in San Marcos directly through the site. When you're ready, browse the listings above and reach out about any that interest you.

Frequently Asked Questions

How many homes are for sale under $400K in San Marcos?

It changes as new listings come on the market and others go under contract. The homes under $400K shown here for San Marcos are drawn from live MLS data, so the count reflects what's actually available right now — the current total is shown with the results above.

What kind of homes can I get under $400K in San Marcos?

It depends on how $400K compares to the local market — the median list price for San Marcos is shown above. Within that budget you'll generally find a mix of houses, condos, and townhomes, and in some areas newer construction, across a range of sizes, ages, and neighborhoods. Filtering by property type and features narrows it to what fits.

How does a $400K budget compare to the San Marcos market?

The simplest gauge is the median list price shown above. If $400K is below the San Marcos median, you're shopping the lower-priced end of the market; if it's near or above the median, your budget covers a large share of what's listed. The live count shows how many homes currently fall under $400K.

How do I know what I can actually afford?

List price is only part of it — your real budget depends on your financing plus property taxes, insurance, and any HOA or MUD dues. Getting pre-approved with a lender tells you what you can borrow and what the monthly payment would be at $400K, so the number is based on your situation rather than a guess.

Are these listings current?

Yes — the homes under $400K shown here are drawn from live MLS data, so you're seeing current listings rather than a stale or padded list. As an independent platform, the goal is an accurate, neutral view of the San Marcos market.

Can HomeLocating help me buy a home under $400K in San Marcos?

Yes. Through HomeLocating, you can get help comparing homes in your budget, understanding the full monthly cost, and handling the offer directly through the site — reach out about any of the listings above.