510 Blanco River Ranch Rd, San Marcos, TX 78666

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.

The Blanco River flows past your back door at 510 Blanco River Ranch Road in San Marcos, and that water access defines everything about this 4.347-acre compound. Built in 2017, the main stone residence spans 4,200 square feet across 4 bedrooms and 5 full baths, but the real story lies in what surrounds it: private waterfall access, explored caves, and river frontage that turns your property into a basecamp for constant adventure.

Your entry bridge crosses onto land that immediately separates you from typical Hill Country living. The main home sits beneath a dense canopy of mature native trees, with vaulted ceilings and an open floorplan built around large windows facing the water. The induction cooktop and kitchen island handle meal prep, but you'll spend more time on the covered rear porch watching the Blanco River move past stone outcrops and natural swimming holes. A sauna building with full climate control gives you year-round recovery space after hiking the property's trails and exploring the limestone grottos scattered across the acreage.

The 1,400-square-foot detached casita functions as independent guest quarters with its own kitchen and fireplace, meaning friends and extended family have their own adventure basecamp. A separate spa structure houses the 6-person sauna, full bath, and sleeping loft, essentially giving you three distinct living zones across the property. The private maintained road keeps traffic out, and the private well with full-home filtration means you're entirely self-sufficient.

Location puts you minutes from Interstate 35, making the 30-minute drive to Downtown Austin manageable for work commutes, but the real draw is Blanco State Park just 10 minutes away via Highway 80. The Blanco River itself handles your daily water access. San Marcos CISD schools serve the property: Travis Elementary, Miller Middle, and San Marcos High. At $405 per square foot for 4,200 square feet on riverfront acreage, this isn't conventional pricing because conventional properties don't offer private waterfalls and cave systems.

Twenty days on market means this adventure basecamp won't wait. The Keenan Group understands Hill Country compounds where the land itself becomes the defining feature of your daily life.