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4 Beds
4 Baths
3,213 sqft

$1,499,000

310 Castano Avenue , Alamo Heights TX, 78209

Price per sqft$466.54
Built in1940
Property size3,213 sqft
Property typeResidential

Overview

Active

Listed Jun 18, 2026

Updated 35h ago

Timeless character in Alamo Heights. Set among mature trees and lush, thoughtfully landscaped grounds, this exceptional 4-bedroom, 4-bathroom residence captures the character and understated sophistication of Alamo Heights. Offering an enviable combination of privacy, gracious living spaces, and elevated indoor-outdoor entertaining, the property is designed for both intimate everyday living and effortless entertaining. From the moment you enter, the home's warmth and distinctive character are immediately apparent. The formal living room, anchored by a fireplace, creates an inviting setting for gatherings, while the adjoining casual dining area leads naturally into the beautifully updated chef's kitchen. Designed with both style and function in mind, the kitchen features a built-in refrigerator, dishwasher, double ovens, gas cooktop, oversized island, and breakfast bar. Beyond the kitchen, a spacious second family room opens through French doors to the expansive covered back porch, seamlessly extending the living space outdoors. The thoughtful floor plan also offers a private guest suite on the main level, complete with a full bath—an ideal retreat for overnight guests or flexible living arrangements. The oversized primary suite is a true sanctuary, filled with natural light and designed for relaxation. The beautifully renovated primary bath elevates the experience with dual vanities, custom built-in storage, a generous walk-in shower, and an impressive custom walk-in closet. Upstairs, two additional bedrooms, two full bathrooms, and a generous game room provide exceptional flexibility for family and guests, while preserving the home's distinctive charm and sense of scale. The outdoor living spaces are where this residence truly shines. A generous covered porch and oversized patio overlook a stunning Keith Zars pool framed by mature landscaping, creating a private, resort-inspired setting for leisurely afternoons, entertaining, and al fresco dining. The grounds offer the rare combination of beauty, privacy, and effortless livability that defines exceptional Alamo Heights living. Adding remarkable versatility, the guest quarters above the garage offer approximately 576 square feet of additional living space, including a living/bedroom area and full bathroom. Ideal for guests, a private office, studio, homeschool space, or extended family, this separate living area provides flexibility without compromising the privacy of the main residence. An oversized two-car garage provides abundant storage, while every aspect of the property reflects a thoughtful balance of comfort and functionality. Beautifully situated in one of San Antonio's most coveted neighborhoods, this is a residence that offers not simply a home, but a refined Alamo Heights lifestyle—private, gracious, and designed for exceptional living.

$9,973/mo

Est. mortgage payment based on a $1,499,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
1968391
Available since
June 18, 2026

Interior Features

Bedrooms
4
Bathrooms
4
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.17 Acres

Other Property Details

Taxes
$21,268
Tax Frequency
Annually
Garage
Yes

 Courtesy of Deanna Wright | Kuper Sotheby's International Realty

Based on information from DASH - Sotheby's International Realty (SIR) as of 10/10/2026. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. The display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent. 

©2026 DASH - Sotheby's International Realty (SIR). All rights reserved. 

Data last updated 12:08 PM UTC, 10/10/2026

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