Active Listing  ·  24 days on market

3920 Sapphire Loop

Round Rock, TX 78681
$550,000
3 Bed 2 Bath 2,496 sqft $220/sqft Built 2011 0.18 acres 2.5-Car Garage Pool Mayfield Ranch Sec 09

Discover the ease of single-story living at 3920 Sapphire Loop! This beautifully updated 3 bedroom, 2 bath has an additional STUDY connected to the primary bath - so convenient. The primary has TWO large closets in the primary with additional rods for max storage use. The garage is a 2.5 bay -- with just that extra bit of space PLUS the attic features 400sf square feet of floored attic storage and provides exceptional storage space. This home features new flooring, a bright open-concept layout, and a tranquil GREENBELT backyard that's perfect for relaxing, entertaining, or enjoying your morning coffee. Combining modern comfort with a peaceful outdoor retreat, this Round Rock gem offers the ideal blend of style, functionality, and convenience.

At $220/sqft, this home is priced 3% above the Round Rock active market average of $213/sqft, reflecting premium positioning, typically tied to finishes, lot, location, or view. View Austin market report →

Location

3920 Sapphire Loop, Round Rock, TX 78681

Property Details

Price $550,000
Status Active Listing
Beds 3
Full Baths 2
Half Baths ,
Living Area 2,496 sqft
Lot Size 0.18 acres (7,644.78 sqft)
Year Built 2011
Garage 2.5 spaces
Stories ,
Type Residential · Single Family Residence
Subdivision Mayfield Ranch Sec 09
County Williamson
Zip Code 78681
$/sqft $220/sqft
Days on Market ,
HOA $45/Monthly
Annual Tax Est. $9,926.31
Pool Yes
Waterfront ,
New Construction ,
MLS # ACT240822543
List Date July 22, 2026
Elementary School Akin
Middle School Stiles
High School Rouse
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
4022 Honey Bear Loop
Vista Oaks Rev 1a
$550,000 $217 4 bd / 2 ba 2,529 sqft , 2026-06-11
3896 Skyview Way
Highlands/Mayfield Ranch Sec 7
$549,990 $222 4 bd / 3 ba 2,480 sqft , 2026-05-27
4034 Geary St
Highlands at Mayfield Ranch
$558,999 $208 4 bd / 4 ba 2,683 sqft , 2025-10-24
3869 Skyview Way
Highlands/Mayfield Ranch Sec 1
$540,000 $235 3 bd / 2 ba 2,301 sqft , 2026-06-11
3635 Pine Needle Cir
Village At Mayfield Ranch Ph 2
$539,000 $207 4 bd / 3 ba 2,606 sqft , 2026-06-22

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
$2,640/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
$110,000
20% conventional investment loan

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

Estimated Gross Rent+$2,640
Principal + Interest−$3,002
Property Tax (~2.1% TX avg)−$963
Insurance (~0.5%)−$229
Est. Monthly Cash Flow $-1,554

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 14, 2026.

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