4400 County Road 123, Round Rock TX 78664
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About This Property
Rare 1 acre property featuring a fully updated, taken-to-the-studs, ~$523K remodel on a 1 story home plus an exceptional 900 sqft insulated workshop which includes a 200 sqft office space. Properties offering this combination of land, full remodel quality, and a modern shop setup are extremely limited in this area. The ~$523K in upgrades completed deliver a turnkey, highly functional residence and workspace. The home includes approx. ~1,825 sq ft of added living area, Hardie siding, new plumbing with insulated Pex, fully replaced HVAC system with variable-speed AC and LP furnace, complete electrical upgrades including 200-amp service to both house and shop, new windows, new interior/exterior doors, new trim, and full flooring replacement (LVP/tile/carpet). Kitchen and baths feature custom cabinetry, new granite countertops, soft-close hardware, and full appliance replacements (KitchenAid double oven, microwave, dishwasher, 36” gas cooktop, GE exhaust vent). More improvements include new dimensional roof, blown-in attic insulation, LED lighting throughout, fireplace rebuild, full laundry/utility room addition, new 4th bedroom, privacy fencing, new driveway, sidewalks, + extensive landscape upgrades. The 30’x30’ workshop is a major highlight with insulated walls/roof (closed-cell spray foam), (2) 16’ electric lift insulated doors, 40” soaker sink with water heater, temperature-controlled exhaust system, separate 200-amp service, 30-amp generator plug, dedicated appliance circuits, interior/exterior 220V plugs, conditioned 20’x10’ office with storage, reclaimed-wood exterior accents, and LED interior/exterior lighting. A covered trailer/storage bay with gate access adds even more utility. All with a backyard paradise that backs into the creek. Ideal for owners needing land, shop space, functionality, and a fully modernized home—in a prime Round Rock location with quick access to toll roads & highways, Samsung, Dell, Amazon, Emerson, etc. **Ask for 3-page upgrade sheet
Property Highlights
Features
- Vaulted Ceiling(s)
- Stone Counters
- Kitchen Island
- Open Floorplan
- Primary Bedroom on Main
- Walk-In Closet(s)
Location
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Listing History
| Feb 4, 2026 | Price Change | $750,000 | |
| Dec 8, 2025 | Listed | Listing Courtesy of Keller Williams Realty-RR - offers@RJFteam.com | $800,000 |
| Mar 17, 2015 | Off Market | ||
| Jan 21, 2015 | Listed | $200,000 |
Frequently Asked Questions About 4400 County Road 123, Round Rock TX 78664
When was 4400 County Road 123, Round Rock TX 78664 built?
4400 County Road 123, Round Rock TX 78664 was built in 1978.
How much does 4400 County Road 123, Round Rock TX 78664 cost?
4400 County Road 123, Round Rock TX 78664 is listed for sale at $750,000. That is $370 per square foot.
How many bedrooms and bathrooms does 4400 County Road 123, Round Rock TX 78664 have?
4400 County Road 123, Round Rock TX 78664 has 4 bedrooms and 2 bathrooms (2 full) with 2,025 square feet of living space.
What school district is 4400 County Road 123, Round Rock TX 78664 in?
4400 County Road 123, Round Rock TX 78664 is in the Hutto ISD school district. Assigned schools include Hutto (elementary), Hutto (middle), Hutto (high school).
What are the property taxes on 4400 County Road 123, Round Rock TX 78664?
The annual property taxes on 4400 County Road 123, Round Rock TX 78664 are $6,860 (as of 2025).
How big is the lot at 4400 County Road 123, Round Rock TX 78664?
The lot at 4400 County Road 123, Round Rock TX 78664 is 1 acres, and the home has 2,025 square feet of living space.
What type of property is 4400 County Road 123, Round Rock TX 78664?
4400 County Road 123, Round Rock TX 78664 is a residential property.
Does 4400 County Road 123, Round Rock TX 78664 have a garage?
Yes, 4400 County Road 123, Round Rock TX 78664 has a 2-car garage.
Is 4400 County Road 123, Round Rock TX 78664 waterfront?
Yes, 4400 County Road 123, Round Rock TX 78664 is a waterfront property on Brushy Creek. Waterfront features include see remarks, creek, waterfront.
What subdivision is 4400 County Road 123, Round Rock TX 78664 in?
4400 County Road 123, Round Rock TX 78664 is located in the Low Water Crossing subdivision in Round Rock, TX.
How long was 4400 County Road 123, Round Rock TX 78664 on the market?
4400 County Road 123, Round Rock TX 78664 was on the market for 63 days, listed on December 8, 2025.
What heating and cooling does 4400 County Road 123, Round Rock TX 78664 have?
4400 County Road 123, Round Rock TX 78664 has central heating and central air cooling.
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