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Keenan Group#1 Austin Board of Realtors Team 2024
5600 South I-35, aerial view with 72.92 acre commercial development site, San Marcos, San Marcos, TX
Active

$15,000,000

72.92 acresLot

5600 South I-35, San Marcos, TX 78666

San Marcos·MLS# 3837512·204 days on market

— bed, — bath on 72.92 acres in San Marcos. San Marcos, TX 78666. $15,000,000. SanMarcosCONSISD.

About This Home

Gold Tier Real Estate proudly presents 72.923 prime acres along IH-35 in San Marcos, Texas—an exceptional development opportunity in a high-visibility location. The property benefits from over 114,000+ vehicles per day, ensuring outstanding exposure. It is zoned for commercial, light industrial, and heavy industrial use, making it highly versatile for various developments.

The level site is ready for construction, with water available at the property and wastewater access nearby. A Union Pacific rail line runs along the western border of the site. The site is within close proximity to transmission lines and a Pedernales Electric substation. Additionally, the seller is open to financing for the right terms, providing flexibility for potential buyers.

This is a rare chance to secure a premium site in a rapidly growing corridor. Buyer must conduct independent due diligence. Broker makes no warranties regarding property details. For more information, contact Gold Tier Real Estate today!

Property Type
Farm
Lot Size
72.92 acres

Listing information last updated March 30, 2026.

Listed by Gold Tier Real Estate, LLC

MLS# 3837512 • Active

IDX inquiries: Keenan Group at Compass · (512) 415-7653

Highlights

Generous 72.92-acre lot
The property benefits from over 114,000+ vehicles per day, ensuring outstanding exposure
The level site is ready for construction, with water available at the property and wastewater access nearby
A Union Pacific rail line runs along the western border of the site
The site is within close proximity to transmission lines and a Pedernales Electric substation
Additionally, the seller is open to financing for the right terms, providing flexibility for potential buyers

Facts & Features

Exterior & Lot

Lot Features

  • Level

Fencing

  • Barbed Wire
Lot Size
72.92 Acres
Financial
Original List Price
$15,000,000
Utilities
  • Electricity Available
  • Sewer Available
  • Water Available
Water Source
Public
Sewer
Public Sewer

Transaction History

3 records on file

Every recorded listing, sale, and lease at 5600 South I-35, whoever represented it.

  1. ActiveListed 2026
    Current price: $15,000,000Original list: $15,000,000MLS 8517778
    1. Listed · March 30, 2026$15,000,000
  2. ActiveListed 2026
    Current price: $15,000,000Original list: $15,000,000MLS 3837512
    1. Listed · March 30, 2026$15,000,000
  3. ActiveListed 2026
    Current price: $15,000,000Original list: $15,000,000MLS 2116245
    1. Listed · March 30, 2026$15,000,000

Prices shown are list prices. Closed sale prices are available to registered clients in accordance with ACTRIS rules.

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Price & Listing History

Listing timeline with current price, original ask, and market time.

View Timeline
Current list
$15,000,000
Original list
$15,000,000
Price movement
No verified reduction
Listed / DOM
Mar 30, 2026 · 204 days
Map showing 5600 South I-35
5600 South I-35
Directions

Zoned Schools

SanMarcosCONSISD

1 High School1 Middle School1 Elementary School

San Marcos

High SchoolGrades 9-12Zoned assignment

Miller

Middle SchoolGrades 6-8Zoned assignment

Rodriguez

ElementaryGrades K-5Zoned assignment

Zoned assignments come from the property school fields available to us. District context schools are shown only when an assigned tier is missing. Contact the school district directly to verify current boundaries and enrollment eligibility.

Principal & interest
$83,086

Excluded from this estimate: property taxes, home insurance, and HOA dues. Each requires verified amount, cadence or unit, source, and as-of details.

20% ($3.0M)

Adjustable assumption - not a lending recommendation.

$15,000,000

Loan: $12.0M
Mortgage rate%
Payoff: ~2056
Rate source: Freddie Mac 30-year fixed average (PMMS via FRED), as of 2026-10-15
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Keenan Market Position

A sourced read on San Marcos pricing, timing, and property scale. No automated valuation claim.

List price

$15,000,000

Price per sqft

Not available

Vs. Neighborhood guide reference price

Not available

Days on market

204 days

Original to current

No verified reduction

$15M original

Active inventory context

Ask for current inventory

Source: MLS Grid / Unlock MLS and Keenan Group review as of Oct 15, 2026.

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More sales nearby

Homes sold by Keenan Group.

Verified property facts

Frequently Asked Questions

How much is 5600 South I-35?

5600 South I-35 is listed at $15,000,000 with 0 bedrooms, 72.92-acre lot. This places it above the ZIP 78666 single-family closed-sale median price of $310,999 (ZIP 78666 geography · single-family closed sales · median sale price · trailing 12 months as of Oct 19, 2026).

What school district is 5600 South I-35 in?

5600 South I-35 is zoned for SanMarcosCONSISD with assigned schools: Rodriguez (San Marcos ISD) (elementary), Miller (middle), San Marcos (high). School assignments should be verified directly with the district.

How should a buyer estimate the monthly payment for 5600 South I-35?

This page does not assume a mortgage rate or publish a monthly payment for 5600 South I-35. A property-specific estimate requires a current lender rate, chosen down payment, taxes, insurance, and any verified association dues.

How does 5600 South I-35 compare with other homes in San Marcos?

As of Oct 15, 2026, 5600 South I-35 is offered at $15,000,000. The current MLS snapshot shows 362 active listings in 78666. Keenan Group has completed 4 verified transactions in 78666 within its 1,000+ completed transactions and $1B+ career volume across Austin.

Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.

Why Choose the #1 Austin Board Team for San Marcos

#1 ABoR Team 20241,000+ Career SalesCompass Luxury Collection Specialist

#1 Austin Board of Realtors Team. 1,000+ homes sold and $1B+ in career sales over 25+ years in Austin.

Unlock MLSMLS GRID

Listing courtesy of Unlock MLS as distributed by MLS GRID. Information deemed reliable but not guaranteed. Neither the listing broker nor Compass RE Texas, LLC shall be responsible for any typographical errors, misinformation, or misprints.

IDX information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. Use of MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS, as amended from time to time.

Based on information submitted to MLS GRID as of 10/15/2026, 1:07:04 PM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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Last updated: 10/15/2026, 1:07:04 PM

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