Date
Details
Price
Change
Source
12/08/2025
Listed
$800,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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Property Description & Video
4400 County Road 123, Round Rock, TXVideo Tour of 4400 County Road 123, Round Rock, TX.
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
Full Property Details
Full Property Details for 4400 Co Rd 123
General
- Price: $800,000
- Taxes: $6,859 (2025)
- Status: Active
- Type: Single Family
- Source: Austin_MLS
- MLS ID: 3238865
- Updated: 12/10/2025
- Added to Site: 41 day(s) ago
Interior
- Interior Features: Kitchen Island, Main Level Primary, Open Floorplan, Stone Counters, Vaulted Ceiling(s), Walk-In Closet(s)
- Fireplace: Yes
- Number of Fireplaces: 1
- Fireplace(s): Family Room
- Appliances: Dishwasher, Gas Cooktop, Microwave, Oven
- Flooring: Carpet, Tile, Vinyl
Rooms
Bathrooms
- Total Bathrooms: 2
- Full Bathrooms: 2
Bedrooms
- Total Bedrooms: 4
- Bedrooms Main: 4
Other Rooms
- Laundry: Main Level, Laundry Room
Additional Information
- Shared Amenities: None
- Spa Description: None
- Security/Safety: None
Exterior
- Exterior Features: None
- Porch/Patio/Deck: Covered, Patio
Parking
- Garage: Yes
- Garage Spaces: 2
- Covered Spaces: 2
- Total Spaces: 6
- Parking Features: Attached
Location
- Area: HU
- County: Williamson
- Subdivision: Low Water Crossing On Brushy Creek
- Driving Directions: east on HW 79, right on Red Bud, left on CR 123
- Direction Faces: South
School Information
- Elem School District: Hutto ISD
- Midd School District: Hutto ISD
- High School District: Hutto ISD
- Elementary School: Hutto
- Middle School: Hutto
- High School: Hutto
Heating & Cooling
- Central air: Yes
- Air Conditioning: Yes
- Cooling Type: Central Air
- Heating Type: Central
Utilities
- Sewer: Septic Tank
- Water: Public
- Utility Description: Electricity Available, Propane
Structural Information
- Detached/Attached: Detached
- Construction: Brick Veneer, Masonry
- Roof: Composition
- Windows: Blinds
- Stories/Levels: 1
- Square Feet: 2,025
- Sq. Ft. Source: Public Records
- Living Area: 2,025 Sq. Ft.
- Year Built: 1978
- Year Built Source: Public Records
- Property Condition: Resale
Additional Structures
- Other Structures: None
Lot Features
- Property View: City
- Lot Size (Acres): 1
- Lot Size (Sq. Ft.): 43,560
- Lot Features: Many Trees, Trees Large Size
- Fencing (Description): None
Water Features
- Water Front: Yes
- Water Front Name: Brushy Creek
- Water Front Desc.: Creek, See Remarks, Waterfront
Financial Considerations
- Assessment Amount: $389,979
- Tax Amount: $6,859.86
- Tax Year: 2025
- Terms: Cash, Conventional, FHA, Texas Vet, VA Loan
Disclosures and Reports
- Special Conditions: Standard
- Documents Avail.: See Remarks
- Legal Description: LOW WATER CROSSING ON BRUSHY CREEK, LOT 4, ACRES 1.00
- Disclosures/Reports: See Remarks
- Property ID: 1414200003
- Lot Number: 4
Listed by Keller Williams Realty-RR
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Listing agent
— 4400 Co Rd 123 —
Keller Williams Realty-RR
(512) 994-0247
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 4400 Co Rd 123
School District:Hutto Independent School District
| Name | Grades | Distance |
|---|---|---|
Hutto Middle School 1005 Exchange Boulevard, Hutto, TX 78634 | 6-8 | 2.8 mi |
Hutto High School 101 Farm to Market 685, Hutto, TX 78634 | 10-12 | 1.8 mi |
Disclaimer:
School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 4400 Co Rd 123
Tax History
Tax History for 4400 Co Rd 123
Year
Property Taxes
Change
Tax Assessment
Change
2025
$4,966
15%
$440,216
11%
2023
$4,327
8%
$395,478
82%
2022
$3,999
-1%
$217,826
—
2021
$4,030
-8%
$217,826
4%
2020
$4,364
-1%
$208,451
9%
2020
$4,426
6%
$191,129
2%
2018
$4,187
4%
$188,213
5%
2017
$4,045
—
$179,619
2%
2016
$4,060
19%
$175,960
20%
2015
$3,400
10%
$146,715
10%
2014
$3,103
10%
$133,377
10%
2013
$2,824
—
$121,252
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 4400 Co Rd 123
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4400 County Road 123, Round Rock, TX 78664 (MLS# 3238865) is a Single Family property with 4 bedrooms and 2 full bathrooms. 4400 County Road 123 is currently listed for $800,000 and was received on December 08, 2025. Want to learn more about 4400 County Road 123? Do you have questions about finding other Single Family real estate for sale in Round Rock? You can browse all Round Rock real estate or contact a Coldwell Banker agent to request more information.