Two-Unit
For Sale
$730,000
21531/21535 Sir Walter, San Antonio, TX 78256
Multi-Family (2-8 Units), San Antonio, TX
Property Size3,552 SF
Lot Size0.12 Acres
Price / SF$205.52
Days on Market10
Property Features for 21531/21535 Sir Walter
General Information
Property type
Residential Multi Family
Property subtype
Other
Elementary school
Bonnie Ellison
Middle school
Hector Garcia
High school
Louis D Brandeis
Elementary school district
Northside
Middle school district
Northside
High school district
Northside
Subdivision
1002
Standard status
Active
Size
3,552 SF
Lot size
0.12 Acres
Taxes and HOA fees
Tax Annual Amount
17509
HOA Fee
$600 Annually
Utilities
Cooling system
Central Air
Amenities
granite countertops
stainless steel appliances
open-concept floorplans
covered balconies
spacious primary suites with walk-in showers, double vanity
private gated patios
gated community
Building Details
Year built
2021
Listing Agency:
Real Broker, LLC
(855) 450-0442
Listed By:
Vincent Spencer
(214) 202-7615
Added: Sep 28
Changed: Sep 29
Last Checked: Oct 7 at 4:06AM
MLS# 2019819
Copyright © 2026 LERA MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
Built in 2021, this attached duplex contains two residences with a combined 3,552 square feet. Each home has three bedrooms, three and a half bathrooms, an attached two-car garage, and a private gated patio. Interior details include granite countertops, stainless steel appliances, open-plan living areas, and primary suites with walk-in showers and double vanities. Covered balconies and central air conditioning are also included.
The property occupies 0.1183 acres within The Preserve at the Dominion, a gated community in San Antonio.
The property occupies 0.1183 acres within The Preserve at the Dominion, a gated community in San Antonio.
Key Highlights
- Two attached residences totaling 3,552 square feet
- Each unit has 3 bedrooms, 3.5 bathrooms, and an attached 2‑car garage
- Built in 2021 on a 0.1183‑acre lot
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$40,884
Cap Rate
5.60%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$817,680
$817.7K
Cap Rate 7%
$584,057
$584.1K
Cap Rate 9%
$454,267
$454.3K
Market Conditions
NOI Build-Up for 3,552 SF
Gross rent
$61.8K $17.40/SF
− Vacancy
−$3.4K −$0.96/SF
EGI
$58.4K $16.44/SF
− OpEx
−$17.5K −$4.93/SF
NOI
$40.9K $11.51/SF
Area
San Antonio, TX
Vacancy
5.50%
Lease Rate
$17.40 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$817,680
Cap Rate 7%
$584,057
Cap Rate 9%
$454,267
Alternative Uses
Best Use
Multifamily LT 5
$584.1K
$511.1K – $681.4K
NOI $40,884 @ 7.0% cap · market cap 5.60%
Second Best
Apartment 5plus
$518.3K
$453.5K – $604.7K
NOI $36,283 @ 7.0% cap · market cap 4.97%
Theoretical Best
Office A
$906.1K
$792.8K – $1.06M
NOI $63,424 @ 7.0% cap · market cap 8.69%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
430
Businesses Nearby
Explore this area
Business Placement
Demographics for 78256, TX
13,643
Population
6,592
Households
2.1
Avg Household Size
30
Median Age
59%
College-Educated
94%
High-School Grad
8.0 sq mi
ZIP Area
1,705
Density / Sq Mi
$72,797
Median Household Income
$52,110
Median Earnings
$1,545
Median Rent
$494,400
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
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Market
Vacancy Rate% for Multifamily in South region
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Frequently Asked Questions
What type of property is this?
Duplex - Both residences offer private gated patios, covered balconies, and attached garages.
Where is this duplex located?
The property is located at 21531/21535 Sir Walter San Antonio, TX.
What is the asking price?
The asking price for this property is $730,000.
What are key features of this property?
This property features: Two attached residences totaling 3,552 square feet; Each unit has 3 bedrooms, 3.5 bathrooms, and an attached 2‑car garage; Built in 2021 on a 0.1183‑acre lot
