4400 County Road 123, Round Rock, TX — photo 1
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$700,000
4 beds2 baths2,025 sqft

4400 County Road 123, Round Rock TX 78664

MLS #236334516 · Keller Williams Realty Lone Star · Robert Fischer

Residential
Built in 1978
1 Acres Lot
$346/sqft

About this home

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 details

Property type
Residential · SingleFamilyResidence
Status
Active
Year built
1978
Full baths
2
Lot size
1
Subdivision
Low Water Crossing On Brushy Creek
MLS area
HU
MLS #
236334516

Features

Interior features

  • Vaulted Ceiling(s)
  • Stone Counters
  • Kitchen Island
  • Open Floorplan
  • Primary Bedroom on Main
  • Walk-In Closet(s)

Exterior features

  • None

Additional details

Parking
Attached
Garage spaces
2
Roof
Composition
Foundation
Slab
Annual tax
$6,859

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Schools

Assigned schools per the MLS.

School district
Hutto ISD
Elementary
Hutto
Middle
Hutto
High
Hutto

See Hutto ISD schools & boundaries →

Comparable homes near 4400 County Road 123

Similar homes currently for sale nearby, ranked by distance.

Getting around

Downtown Austin
20.3 mi
Austin-Bergstrom Airport
23.4 mi

Straight-line distance, not drive time.

Market insights

Compared with 353 active homes in ZIP 78664 · HomeLocating listings

Area median price
$350,000
This home vs. median
100% above
Homes with a price cut
48%

At $700,000, this home is priced 100% above the $350,000 median across 353 active homes in ZIP 78664.

Estimated monthly payment

$4,404/mo
Principal & interest$3,540/mo
Property taxes
Home insurance (est.)

Home price

$700,000

Down payment

20% ($140,000)

Loan details

30-yr fixed, 6.50%

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Listing courtesy of Keller Williams Realty Lone Star · Robert Fischer

Listing data last updated Oct 2, 2026, 11:46 PM

Information is deemed reliable but not guaranteed and should be independently verified. Listing information is provided 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. © 2026 HomeLocating.com.

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