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Keenan Group#1 Austin Board of Realtors Team 2024
301 Armstrong ST, photo 1 of 29, San Marcos, San Marcos, TX
Active

$259,000

3Beds
1.5Baths
972Sq Ft
0.06 acresLot

301 Armstrong St, San Marcos, TX 78666

Reduced 2%$264,000
San Marcos·MLS# 3035590·Built 2011·49 days on market

3 bed, 1 bath, 972 sqft on 0.06 acres in San Marcos. San Marcos, TX 78666. $259,000. SanMarcosCONSISD.

About This Home

Welcome to 301 Armstrong, a well-maintained 3-bedroom, 2-bath home offering a little extra breathing room in the heart of San Marcos. With no neighbor directly behind the home and no neighbor on one side, the setting offers an added sense of separation and privacy that can be hard to find this close to town.

Inside, the open floor plan makes great use of the space, creating an easy flow between the living, dining, and kitchen areas—perfect for everyday living or spending time with friends. New flooring was installed throughout the home in August 2025, and the interior has recently been refreshed with new paint, repaired baseboards, recaulked finishes, and new blinds throughout. The primary bedroom features its own private half bath and walk-in closet, while two additional bedrooms offer flexibility for guests, a home office, hobbies, or whatever fits your lifestyle.

One of the home’s standout upgrades is the LifeSource whole-home water filtration system, providing filtered water throughout the house without the hassle of individual filters. The home has clearly been cared for, making it an inviting option for someone looking for a comfortable home that feels fresh and ready to enjoy.

Out back, the privacy-fenced yard creates a comfortable space for morning coffee, pets, outdoor dining, or relaxing at the end of the day. With fewer adjoining homes around the property, the backyard enjoys an added sense of privacy while still being close to everything San Marcos has to offer.

And when you’re ready to head out, you’re just minutes from downtown, Texas State University, the San Marcos River, local restaurants, shopping, and easy access to I-35. 301 Armstrong offers a comfortable home base with added privacy, thoughtful updates, and an easy San Marcos lifestyle.

Property Type
Residential
Year Built
2011
Lot Size
0.06 acres
Price / Sq Ft
$266

Listing information last updated October 14, 2026.

Listed by Century 21 Randall Morris & As

MLS# 3035590 • Active

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

Highlights

Ceiling Fan(s)
Tile Counters
Open Floorplan
Primary Bedroom on Main
Walk-In Closet(s)
Dishwasher

Facts & Features

Interior

Features

  • Ceiling Fan(s)
  • Tile Counters
  • Open Floorplan
  • Primary Bedroom on Main
  • Walk-In Closet(s)

Appliances

  • Dishwasher
  • Microwave
  • Free-Standing Electric Range
  • Electric Water Heater
  • Water Purifier Owned

Flooring

  • Laminate
Heating
Central,Electric
Cooling
Ceiling Fan(s),Central Air,Electric
Exterior & Lot

Features

  • Private Yard

Construction

  • Vinyl Siding
  • Stone Veneer

Lot Features

  • Curbs
  • Level
  • Private
  • Trees-Large (Over 40 Ft)

Fencing

  • Back Yard
  • Privacy
  • Wood

Foundation

  • Slab

Patio / Porch

  • Covered
  • Front Porch
Roof
Composition,Shingle
Lot Size
0.06 Acres

Parking

  • Parking Pad
Financial
Original List Price
$264,000
Price per Sq Ft
$266
Utilities
  • Electricity Connected
  • High Speed Internet
  • Sewer Connected
  • Water Connected
Water Source
Public
Sewer
Public Sewer

Transaction History

1 record on file

Every recorded listing, sale, and lease at 301 Armstrong ST, whoever represented it.

  1. ActiveListed 2026
    Current price: $259,000Original list: $264,000MLS 3035590
    1. Listed · August 28, 2026$264,000
    2. Price changed · October 1, 2026$259,000

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

Price Change with current price, original ask, and market time.

View Timeline
Current list
$259,000
Original list
$264,000
Price movement
$5K reduction
Listed / DOM
Aug 28, 2026 · 49 days

Tax Record

Public record data from county appraisal records. Market value can differ from assessed value.

Assessed Value
$217,429
Assessment Year
2025
Year Built
2011
Parcel ID
11-9195-0800-01500-3
YearTaxesTotal AssessmentLandAdditions
2025
—$217,429$25,810$191,619
Map showing 301 Armstrong ST
301 Armstrong ST
Directions

Zoned Schools

SanMarcosCONSISD

1 High School1 Middle School1 Elementary School

San Marcos

High SchoolGrades 9-12Zoned assignment

Miller

Middle SchoolGrades 6-8Zoned assignment

Hernandez

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
$1,435

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

20% ($52K)

Adjustable assumption - not a lending recommendation.

$259,000

Loan: $207K
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

$259,000

Price per sqft

$266/sqft

Vs. Neighborhood guide reference price

Not available

Days on market

49 days

Original to current

$5K reduction

$264K 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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Frequently Asked Questions

How much is 301 Armstrong St?

301 Armstrong St is listed at $259,000 with 3 bedrooms, 1 full, 1 half bathrooms, 972 square feet, 0.06-acre lot.

What school district is 301 Armstrong St in?

301 Armstrong St is zoned for SanMarcosCONSISD with assigned schools: Hernandez (elementary), Miller (middle), San Marcos (high). School assignments should be verified directly with the district.

What are the property details for 301 Armstrong St?

301 Armstrong St is a Residential built in 2011 featuring 3 bedrooms, 1 full, 1 half bathrooms, 972 square feet, 0.06-acre lot.

What are the property taxes for 301 Armstrong St?

The most recent annual property tax for 301 Armstrong St is $4,493. Texas has no state income tax, so property taxes are a primary revenue source. Rates vary by jurisdiction and exemptions. Verify current amounts with the county appraisal district.

How should a buyer estimate the monthly payment for 301 Armstrong St?

This page does not assume a mortgage rate or publish a monthly payment for 301 Armstrong St. A property-specific estimate requires a current lender rate, chosen down payment, taxes, insurance, and any verified association dues.

How does 301 Armstrong St compare with other homes in San Marcos?

As of Oct 15, 2026, 301 Armstrong St is offered at $259,000. The current MLS snapshot shows 358 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.

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25+ years advising buyers and sellers in this community

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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.

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Based on information submitted to MLS GRID as of 10/15/2026, 9:17:04 AM. 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, 9:17:04 AM

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