4400 County Road 123, Round Rock TX 78664
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About This Property
Property offers potential for a variety of uses, including possible commercial applications, subject to buyer verification. Versatile property with a metal building. No known restrictions per seller; however, buyer to independently confirm zoning, restrictions, and intended use. 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. ~$523K in upgrades, 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. New roof, blown-in attic insulation, LED lighting throughout, fireplace rebuild, full laundry/utility room addition, 4th bedroom, privacy fencing, new driveway, sidewalks, + extensive landscape upgrades. The 30’x30’ workshop has 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, plus a covered trailer/storage bay with gate access. Backyard paradise that backs into the creek. 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. All information deemed reliable. Buyer to verify all information.
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Listing History
| Apr 10, 2026 | Listed | Listing Courtesy of Keller Williams Realty-RR - offers@RJFteam.com | $750,000 |
| Feb 4, 2026 | Price Change | $750,000 | |
| Dec 8, 2025 | Listed | $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.
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.
What type of property is 4400 County Road 123, Round Rock TX 78664?
4400 County Road 123, Round Rock TX 78664 is a commercial sale property.
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.
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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