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4400 County Road 123, 
Round Rock, TX 78664

$700,000


4

Beds


2

Baths


2,025

Sq Ft


Single Family

Active

Listed by

Robert Fischer

Keller Williams Realty Lone Star

512-994-0247

Last updated:

October 21, 2026, 03:49 PM

MLS#

3238865

Source:

ACTRIS

About This Home

4400 County Road 123

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

Home Facts

Single Family

2 Baths

4 Bedrooms

Built in 1978

Subdivision & Development:

Low Water Crossing On Brushy Creek

Price Summary

700,000

$345 per Sq. Ft.

MLS #:

3238865

Last Updated:

October 21, 2026, 03:49 PM


Rooms & Interior

Bedrooms

Total Bedrooms:

4

Bathrooms

Total Bathrooms:

2

Full Bathrooms:

2

Interior

Living Area:

2,025 Sq. Ft.


Structure

Structure

Building Area:

2,025 Sq. Ft.

Year Built:

1978


Lot

Lot Size (Sq. Ft):


Finances & Disclosures

Finances

Price:

$700,000

Price per Sq. Ft:

$345 per Sq. Ft.

Source:ACTRIS
Copyright 2026 UnLock MLS . All rights reserved. Listings courtesy of UnLock MLS as distributed by MLS GRID

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.