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$750,000 Just Listed
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Property Description
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.
Full Property Details
Full Property Details for 4400 Co Rd 123
General
- Price: $750,000
- Taxes: $6,859 (2025)
- Status: Active
- Type: Business
- Source: Austin_MLS
- MLS ID: 7862691
- Updated: 4/10/2026
- Added to Site: 1 day(s) ago
Interior
- Flooring: Carpet, Tile, Vinyl
Rooms
Other Rooms
- Laundry: Washer Hookup, Dryer Hookup, ElectricDryer Hookup
Additional Information
- Security/Safety: None
Exterior
- Exterior Features: Storage
Parking
- 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
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
- # Buildings: 2
- Detached/Attached: Detached
- Construction: Brick Veneer, Masonry
- Square Feet: 2,025
- Sq. Ft. Source: Owner
- Current Bldg. Use: Residential, Single Family
- 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
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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Schools
Schools serving 4400 Co Rd 123
School District:Hutto Independent School District
| Name | Grades | Distance |
|---|---|---|
Benjamin Doc Kerley Elementary School 800 Haybarn Lane, Hutto, TX 78634 | PK-5 | 1.4 mi |
Hutto High School 9th Grade Center 301 Destiny Lane, Hutto, TX 78634 | 9- | 4.4 mi |
Hutto High School 101 Farm to Market 685, Hutto, TX 78634 | 10-12 | 1.8 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 4400 Co Rd 123
Date
Details
Price
Change
Source
4/10/2026
Listed
$750,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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
4400 County Road 123, Round Rock, TX 78664 (MLS# 7862691) is a Business property. 4400 County Road 123 is currently listed for $750,000 and was received on April 10, 2026. Want to learn more about 4400 County Road 123? Do you have questions about finding other Business 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.

