510 BLANCO RIVER RANCH ROAD, SAN MARCOS, TX 78666
Homes for sale in San Marcos.
Homes for sale in 78666.
List Price$1,699,990
510 Blanco River Ranch Road
San Marcos, TX 78666
Listing #4049712
4
Bedrooms
5 full
Bathrooms
4,200
Square Feet
House
Type
About This Property
http://www.510blancoriverranch.com Imagine ending your day to the sound of flowing water--not traffic. Walking your own land to a hidden grotto, private waterfall & even unexplored caves--features most will never experience, let alone own. Tucked beneath a dense canopy of mature trees along the Blanco River, this is not just a home--it's a one-of-one Hill Country compound where natural beauty & privacy converge in a way that cannot be recreated today. Just minutes from IH-35 & within 30 minutes of Downtown Austin, it offers the rare balance of convenience & complete escape. Cross the charming entry bridge & the property immediately sets itself apart. This isn't typical riverfront--this is an immersive setting where the land itself is the luxury. The main residence (~2,800 sqft) was designed to live in harmony with its surroundings, featuring expansive windows, natural materials & a warm, grounded feel throughout. The property extends well beyond the main home. A detached casita (~1,400 sqft) with full kitchen & fireplace offers true independent living--ideal for guests or multigenerational use. A separate spa building features a 6-person sauna, full bath, changing area & sleeping loft, fully climate controlled for year-round use. Outdoor living is where this property becomes unforgettable--multiple gathering areas, direct river access & a setting that feels like a private resort. Steps lead to the riverbank where clear water & peaceful surroundings define the experience. Private well w/ full-home filtration & reverse osmosis. There are homes & there are properties that rarely exist. This is one of them.
Property Features
Location Information
County
Hays
Subdivision
The Blanco River Ranch
County
Hays
Directions
Post Road in San Marcos to Blanco River Ranch Gate. Call listing agent for gate code. Property at top of hill on the right.
Area
HS
Interior Features
Interior
Breakfast Bar, Built-in Features, Chandelier, Kitchen Island, Main Level Primary, Open Floorplan, Soaking Tub, Sauna, Vaulted Ceiling(s)
Heating
Central
Primary Bedroom On Main
Yes
Floors
Wood
Full Baths
5
Laundry
Inside
Has Fireplace
Yes
Disabled Features
See Remarks
Number of Fireplaces
2
Appliances
Dishwasher, Disposal, Induction Cooktop, Oven, Refrigerator
Fireplace Description
Living Room
Accessibility
See Remarks
Exterior Features
Style
Stone
Garage Spaces
2
Stories
1
Fencing
See Remarks
Is New Construction
No
Is a Horse Property
Yes
Construction/Exterior
Stone
Lot Size in Acres
4.347
Exterior
Exterior Steps, Private Entrance
Water Body
Blanco River
Foundation
Slab
Waterfront Description
River Front
Possession
Close Of Escrow
Has Waterfront
Yes
Water / Sewer
Septic Tank
Has View
Yes
Water
Well
View
Bridge(s), Park/Greenbelt, River
Parking Description
Additional Parking, Garage
Is One Story
Yes
School
Elementary School District
SanMarcosCONSISD
Middle School
Miller
Elementary School
Travis
High School
San Marcos
Additional Information
Roof/Attic
Metal
APN
510 Blanco River Ranch Ro
Other Utilities
Electricity Connected, Sewer Connected
Status
Active
Gated
Yes
HOA Fee
$725
Association Name
Blanco River Ranch
HOA Frequency
Annually
Property Type
SFR
HOA Includes
Common Area Maintenance
Property SubType
Single Family Residence
Documents Available
See Remarks, Survey
Year Built
2017
Square Feet Source
Public Records
Similar Listings
Mortgage Calculator
$7,937
per month
30 Year Fixed. 3.52% Interest Rate.
Principal + Interest
$6,125
Monthly Tax
$1,416
Monthly Insurance
$396
yrs
%
$
$
Based on a fully amortized fixed rate loan. Ask your agent for the tax rates in your area. Insurance estimate is based on an average cost, your final premium cost will be determined by the type of coverage you select. This program only provides an estimate.
Schools
Walk Score
Listing Courtesy of: The Seely Group (512) 943-2572
© 2026 Austin Board of REALTORS® (ACTRIS). All rights reserved.
Listings courtesy of APPLICABLE MLS as distributed by MLSGRID. Based on information submitted to the MLS GRID as of 2026. All data is obtained from various sources and may not have been verified by the 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. All information provided is deemed reliable but is not guaranteed and should be independently verified. The Austin Board of REALTORS® ACTRIS and their affiliates provide the MLS and all content therein " AS IS" and without any warranty, express or implied. The information being provided is 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. Based on information from ACTRIS through the date and time shown below.
Unlock MLS data last updated at June 7, 2026, 4:41 AM CT
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