4400 County Road 123

Round Rock, TX 78664 · Williamson County

$750,000Price
4Beds
4400 County Road 123
1 / 40
Photo 1
Photo 2
Photo 3
Photo 4
Photo 5
Photo 6
Photo 7
Photo 8
Photo 9
Photo 10
Photo 11
Photo 12
Photo 13
Photo 14
Photo 15
Photo 16
Photo 17
Photo 18
Photo 19
Photo 20
Photo 21
Photo 22
Photo 23
Photo 24
Photo 25
Photo 26
Photo 27
Photo 28
Photo 29
Photo 30
Photo 31
Photo 32
Photo 33
Photo 34
Photo 35
Photo 36
Photo 37
Photo 38
Photo 39
Photo 40
▶ Virtual Tour

Description

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

Contact Agent

C
Col Realty
Col Realty
(512) 699-3810

Property Details

StatusActive
MLS #ACT213322706
Taxes$6,860 (2025) / year
TypeResidential
Year Built1978
Lot Size1.00 AC / 43,560 SF
CountyWilliamson
SubdivisionLow Water Crossing On Brushy Creek
Garage Spaces2

Property Information

Interior

Vaulted Ceiling(s)Stone CountersKitchen IslandOpen FloorplanPrimary Bedroom on MainWalk-In Closet(s)

Exterior

None

Appliances

DishwasherGas CooktopMicrowaveOven

Community

None

Parking

Attached

Utilities & Construction

Heat: CentralAC: Central AirCarpet, Tile, VinylRoof: CompositionFoundation: Slab
🏊 Pool 🌊 Waterfront

Directions: east on HW 79, right on Red Bud, left on CR 123

Location

Property History

DateEventPrice
Feb 15, 2026 Listed (Active) · MLS# ACT213322706 $750,000
Original List Price $800,000

Full transaction history may not be available. Data sourced from ACTRIS MLS.

Public Records

Tax Record 2025$6,860
Year Built1978
Beds4
Lot Size43,560 Sq. Ft.
StyleResidential
CountyWILLIAMSON
MLS #ACT213322706

Schools

E
Hutto
Public · Elementary · Serves this home
M
Hutto
Public · Middle School · Serves this home
H
Hutto
Public · High School · Serves this home

Please verify enrollment eligibility directly with schools.

$750,000
4400 County Road 123, Round Rock, TX

By submitting, you agree to be contacted by Col Realty.

Payment Estimate

Estimated monthly payment
Principal & Interest
Property Taxes

For illustrative purposes only. Contact a lender for accurate figures.