Active Listing  ·  22 days on market

3821 Lombard St

Round Rock, TX 78681
$639,900
4 Bed 4 Bath 2,901 sqft $221/sqft Built 2019 0.20 acres 2-Car Garage Pool Mayfield Ranch

Show-stopping single-story home featuring approximately 2,901 square feet with 4 bedrooms, 3.5 baths, a private office, flex room, game room, and an open-concept design that offers exceptional space for both everyday living and entertaining. The impressive family room is highlighted by soaring cathedral ceilings, creating a bright and inviting atmosphere that flows seamlessly into the expansive kitchen. Designed with the home chef in mind, the kitchen offers multiple islands, an abundance of countertop space, extensive cabinetry, and a large walk-in pantry. The spacious primary suite is a true retreat, featuring a luxurious bath with dual vanities, a walk-in shower, separate soaking tub, and a large walk-in closet with plenty of storage. Generously sized secondary bedrooms and multiple flexible living spaces provide endless possibilities for working from home, hobbies, or entertaining guests. Beautiful tile flooring, fresh neutral paint, and abundant storage throughout make this home truly move-in ready. Outside, the manicured front yard adds to the home's outstanding curb appeal. This exceptional floor plan combines spacious living, thoughtful design, and timeless finishes, making it a home you won't want to miss.

At $221/sqft, this home is priced 3% above the Round Rock active market average of $214/sqft, reflecting premium positioning, typically tied to finishes, lot, location, or view. View Austin market report →

Location

3821 Lombard St, Round Rock, TX 78681

Property Details

Price $639,900
Status Active Listing
Beds 4
Full Baths 3
Half Baths 1
Living Area 2,901 sqft
Lot Size 0.20 acres (8,799.12 sqft)
Year Built 2019
Garage 2 spaces
Stories ,
Type Residential · Single Family Residence
Subdivision Mayfield Ranch
County Williamson
Zip Code 78681
$/sqft $221/sqft
Days on Market ,
HOA $150/Quarterly
Annual Tax Est. ,
Pool Yes
Waterfront ,
New Construction ,
MLS # ACT241157708
List Date July 24, 2026
Elementary School Carver
Middle School James Tippit
High School East View
School District ,

Luke Allen (TREC #788149) has deep knowledge of Round Rock and surrounding markets. Whether you're buying, selling, or just researching comparable sales, reach out for a no-pressure conversation.

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Similar Homes on the Market in Round Rock

Comparable Listings Right Now

Homes currently for sale in Round Rock with similar bedroom count, size, and price range, giving you real-time context for how this property's asking price compares to the active market.

AddressList Price$/sqftBeds/BathsSqftDOMListed
3617 Kyler Glen Cv
Highlands at Mayfield Ranch
$640,000 $201 5 bd / 4 ba 3,177 sqft , 2026-06-12
3928 Cole Valley Ln
Highlands at Mayfield Ranch
$654,900 $218 3 bd / 4 ba 3,002 sqft , 2026-03-25
751 Whitetail Dr
Highlands at Mayfield Ranch
$659,000 $188 4 bd / 4 ba 3,505 sqft , 2026-07-16
4109 Massey Way
Mayfield Ranch Sec 07
$600,000 $220 4 bd / 3 ba 2,726 sqft , 2026-07-24
3901 Sansome Ln
Highlands at Mayfield Ranch
$599,900 $205 5 bd / 4 ba 2,928 sqft , 2026-05-20

Source: ACTRIS MLS, live listings. Similar by ±1 bed, ±35% price, ±35% sqft. Contact Luke for a formal comparative market analysis.

Investment Analysis

Rental Income Potential

The numbers below use conservative Austin-market assumptions. They are estimates, not a guarantee. Actual rents vary by condition, timing, and management. Read our full Austin rental property guide →

Est. Monthly Rent
$3,072/mo
0.48% rule · conservative Austin est.
Gross Yield
5.76%
Annual rent ÷ purchase price
Cap Rate (est.)
3.46%
NOI after 40% vacancy + expenses
Down Payment
$127,980
20% conventional investment loan

Monthly Cash Flow Breakdown (20% down · 7.25% rate)

Estimated Gross Rent+$3,072
Principal + Interest−$3,492
Property Tax (~2.1% TX avg)−$1,120
Insurance (~0.5%)−$267
Est. Monthly Cash Flow $-1,807

At current rates and prices, many Austin luxury properties run neutral or slightly negative on pure cash flow, appreciation and equity paydown are the primary return drivers. BRRRR and off-market acquisitions can improve day-one cash flow. Learn about the BRRRR method in Austin →

Commute & Employment

Major Employers Near Round Rock, TX

Round Rock sits within commuting range of Austin's major tech, manufacturing, and corporate campuses. Approximate drive times from this area:

Dell Technologies HQ 5 min
Apple Campus (Domain) 15 min S
Samsung Austin Semiconductor 20 min SW
Tesla Gigafactory 35 min S

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About the Author
Luke Allen, Austin TX Realtor, TREC #788149
Luke Allen
Licensed Austin TX Realtor · TREC #788149 · Full-time since 2019
★★★★★ 5.0 on Google · 30 Reviews

Luke Allen is a full-time Austin TX Realtor with the Austin Marketing + Development Group brokerage. He works with buyers, sellers, and investors across every Austin ISD and the surrounding neighborhoods, from Downtown and East Austin to Round Rock, Cedar Park, and the Hill Country. Every page on this site is written and maintained by Luke. This page was last updated on August 11, 2026.

📞 (254) 718-2567 [email protected] More about Luke →