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$394,900
4 Beds ⋅ 3 Baths ⋅ 2310986 MLS ⋅ 78664 Zip Code
THE ULTIMATE “NEW-STUDS-OUT” REBUILD AT 2600 HILL STREET CV IN THE HEART OF ROUND ROCK Why wait months for new construction in a distant subdivision when you can own a 2026-standard home in a well-established, tree-lined neighborhood—with NO HOA restrictions? After a small second-floor fire, this home was completely taken down to the studs and meticulously rebuilt—offering the reliability of new construction with the character and charm of a mature lot. This is not a typical remodel—it’s a full-scale transformation. Everything is brand new (2025/2026): Major Systems: HVAC, water heater, and roof Core Infrastructure: All-new electrical wiring and plumbing throughout Energy Efficiency: New energy-efficient windows, spray foam insulation, and all-new drywall Interior Finishes: Designer-selected details, custom cabinetry, luxury flooring, and high-end appliances Modern Convenience: EV-ready setup for easy electric vehicle charging Enjoy the benefits of lower property taxes in an established area while living in a home where every detail—from light switches to shingles—is completely new and never lived in. Perfectly situated in a prime Round Rock location, this home offers convenient access to major employers, shopping centers, and entertainment destinations like Kalahari Resort. With close proximity to major highways, commuting is effortless—making it easy to reach Austin and surrounding areas. Don’t settle for “renovated” when you can own rebuilt. Schedule your private tour today!

2600 Hill Street Cv, Round Rock
$640,000
4 Beds ⋅ 3 Baths ⋅ 8857527 MLS ⋅ 78681 Zip Code
You will love this home in Sendero Springs with a 9.35 kW solar power system that covers 90% of the current owner’s electricity needs. With the system fully paid off & 21 years remaining on the warranty, you’ll enjoy peace of mind. Numerous windows have been replaced with triple pane glass. Not one, but two Powerwall back-up generators will ensure uninterrupted power during outages. This home has 4 bedrooms & several versatile areas that can be multi-use. The formal dining room with beautiful arched windows & wood floors can easily be transformed into a cozy gathering space, thanks to the kitchen’s breakfast bar & ample breakfast room area. The kitchen itself has warm espresso cabinetry, stainless appliances, the convenience of gas cooking, & opens seamlessly into a bright family room. The family room has wood floors, vaulted ceilings & a wall of windows making the entire area a bright cheerful space. The primary suite is conveniently located downstairs with wood floors plus a wonderful bathroom complete with dual separate vanities. On the upper level, you'll find 3 bedrooms with tall ceilings & two flexible spaces -customize them to suit your needs. Step outside to an expansive backyard offering privacy, thanks to its tree-lined easement, & a storage shed for additional space. The Sendero Springs neighborhood has many amenities for those who love the outdoors. Neighborhood amenities include a 7.5 acre park with hike & bike trails, pavilion, sports courts, basketball, & a playground. A Brushy Creek MUD pass is available for a minimal cost to gain access to the community pool which is heated & open all year round. Outside the neighborhood, enjoy a short 10 minute ride to Brushy Creek Lake Park hosting 90 acres of parkland, fishing & kayaking. The home is situated with easy access IH-35 or 45 Toll, as well as Parmer Lane, which opens up endless possibilities for restaurants, shopping such as Round Rock Outlet Mall, medical facilities, & major employers.

128 W Adelanta Pl, Round Rock
$765,000
4 Beds ⋅ 3 Baths ⋅ 9511742 MLS ⋅ 78681 Zip Code
Welcome to this stunning two-story home nestled on a quiet cul-de-sac, backing to a serene greenbelt for added privacy. This beautifully maintained home offers 4 spacious bedrooms and 3 full bathrooms, with a highly desirable layout featuring two bedrooms conveniently located on the main level—perfect for guests or multi-generational living. Step inside to discover an abundance of natural light flowing throughout the home, enhanced by elegant plantation shutters that add both charm and functionality. Upstairs, you’ll find a generous game room, providing the perfect space for relaxation, play, or a media retreat. Outdoors, your private backyard oasis awaits. Enjoy the covered patio, a poolside fire pit, and a newly resurfaced pool (2026) and hot tub, complete with a brand-new heater (2026) for year-round comfort. The beautifully landscaped yard offers plenty of space to unwind, entertain, and take in the peaceful greenbelt setting. Spacious 2.5 garage offers additional storage and a Tesla power wall that conveys with the home. Located within the highly acclaimed Round Rock ISD—Old Town Elementary, Walsh Middle, and Round Rock High—this home also provides access to wonderful community amenities, including a park, pool, sports courts, and hike/bike trails. This home truly combines comfort, style, and an exceptional location—don’t miss the opportunity to make it yours!

2705 Wolkin Cv, Round Rock
$334,500
3 Beds ⋅ 2 Baths ⋅ 8950843 MLS ⋅ 78665 Zip Code
This is a very nice 3 bedroom 2 bath one level with a 2 car garage .Hvac was replaced in 2025,the dishwasher in 2025, sliding glass doors in 2024,water softener in 2024 and kitchen floor in 2026. Enjoy your large family room that flows into the dining room. A big patio will entice you to grill out. It is located in a nice neighborhood in North Round Rock on a cul de sac with very light traffic. The Union Hill Elementary is very close and it is a short distance from shopping and Balor Scott and White Hospital.

3705 Palo Pinto Cv, Round Rock
$699,999
5 Beds ⋅ 4 Baths ⋅ 1540379 MLS ⋅ 78664 Zip Code
Welcome to your private retreat in the heart of Round Rock! This stunning 5-bedroom, 3.5-bath stone home offers an unmatched lifestyle on an oversized 0.58-acre cul-de-sac lot. Step into a backyard paradise featuring a sparkling in-ground pool with a waterfall, a separate pool house/shed, and a spacious covered patio—perfect for Texas summer evenings. Inside, the 3,262 sq. ft. layout is designed for effortless entertaining, boasting a main-level primary suite, high ceilings, and granite counters. With multiple living areas and a dedicated home office, there is room for everyone. No HOA! Enjoy tranquility with quick access to Forest Creek Elementary, major commuter routes, and local dining. Don’t miss the opportunity to own a home that combines space, comfort, and exceptional outdoor living. Seller is offering a 6months home warranty for added peace of mind! This is a true Round Rock standout. Some images have been virtually staged to illustrate the potential use and layout of the space and to help visualize the room’s size and functionality.

207 Silver Oak Dr, Round Rock
$399,000
4 Beds ⋅ 2 Baths ⋅ 2701524 MLS ⋅ 78681 Zip Code
Tucked away on a quiet cul-de-sac in a highly convenient Round Rock location, this spacious 4-bedroom, 2-bath home offers the perfect blend of comfort, functionality, and recent updates. With two living areas and two dining spaces, there’s plenty of room to spread out, entertain, or simply relax. High ceilings throughout create an open, airy feel, while the large kitchen flows seamlessly into the family room—ideal for everyday living and hosting gatherings. The layout is thoughtfully designed with the primary bedroom privately separated from the secondary bedrooms, providing a peaceful retreat at the end of the day. The versatile fourth bedroom features two entry doors, making it an excellent option for a home office, guest room, or flex space. Major system updates add peace of mind, including a new roof in 2024 and HVAC replaced in 2025. Situated on a cul-de-sac lot in a great location, this home offers easy access to major roads, dining, shopping, and medical facilities, making daily errands and commuting simple and convenient. A fantastic opportunity to enjoy space, updates, and location all in one.

4004 Witte Cv, Round Rock
$350,000
4 Beds ⋅ 3 Baths ⋅ 9104205 MLS ⋅ 78665 Zip Code
Just reduced — and this is your window in. Sonoma South is one of Round Rock's most established and sought-after neighborhoods, and this spacious cul-de-sac home is your chance to get in at a price point that leaves room to update, personalize, and build equity from day one. The cul-de-sac means low traffic and a quiet street. Inside, the generous floor plan gives everyone room to spread out — multiple living areas so there's space for everything and everyone. One owner since it was built, and lovingly maintained — the foundation is solid and the location is prime. You'll be walking distance to Blackland Prairie Elementary and zoned for Round Rock's top schools, with easy access to shopping, dining, and major highways including I-35, SH-45, and Toll 130. Homes in Sonoma South don't come at this price often. Come see why.

3502 Shiraz Loop, Round Rock
$419,900
4 Beds ⋅ 3 Baths ⋅ 1350039 MLS ⋅ 78681 Zip Code
Net-Zero Townhome at Solara at Highland Horizon! Discover Solara at Highland Horizon, a premier gated community of just 16 thoughtfully designed, Net-Zero ready townhomes in the heart of the Texas Hill Country. Located in Round Rock, just northwest of Austin, Solara combines luxury, sustainability, and convenience in one exceptional address. Prime Location: Nestled among established high-end neighborhoods, Solara offers easy access to top shopping, dining, and entertainment destinations. You’re just 1 mile from Toll Road 45 and Mopac Expressway, minutes from The Domain, and within easy reach of downtown Austin. Education & Lifestyle: Located in the acclaimed Round Rock ISD and near Concordia University and Austin Community College’s Cypress Creek campus, Solara supports lifelong learning for all ages. Outdoor enthusiasts will love the interconnecting trail system that winds through Brushy Creek Lake Regional Park, Avery Ranch, and Northwoods—perfect for hiking, biking, or leisurely strolls. Community Highlights: 16 Net-Zero ready luxury townhomes! Solar panels included! Private, fenced rear yards and attached garages! Beautiful stone and stucco exteriors with exceptional curb appeal! Energy-efficient fixtures & appliances! Stainless & granite countertops! Office and full bath on first floor! Experience Hill Country living with access to upscale shopping, dining, and entertainment—all while enjoying energy efficiency, comfort, and modern design. Contact us today to reserve your home at Solara at Highland Horizon — where sustainable luxury meets Texas Hill Country charm!

202 Tesla Cir, Round Rock
$1,250,000
5 Beds ⋅ 5 Baths ⋅ 5833496 MLS ⋅ 78681 Zip Code
Don’t miss this very Special Multigenerational home tucked away on a quiet tree covered street with peaceful panoramic views of Brushy Creek from your backyard. Remodeled and refreshed. Five bedrooms with spectacular expansive primary suite, two large secondary bedrooms and three baths on main level plus complete Private Guest Quarters. Great room with solid wood beam ceiling. Scraped Brazilian wood floors, gas log fireplace. Wall of natural light opening to tranquil outdoor beauty. Chef's kitchen with giant granite island, wine cooler, stainless appliances and cabinets galore, with pass through to formal dining and wet bar. Breakfast area adjoins sitting area with gas log fireplace. Huge utility /office/ flex room. Upstairs Game room with wet bar plus 2 bedrooms and bath includes balcony overlooking paradise. The backyard is breathtaking from the covered brick patio, extensive stone area, cook shed and steps leading to Brushy Creek. So many special features. Truly amazing!

1404 Pearl Cv, Round Rock
$789,950
4 Beds ⋅ 3 Baths ⋅ 2125648 MLS ⋅ 78665 Zip Code
Located in the highly sought after Paloma Lake master planned community in Round Rock, this Highland Homes residence offers nearly 3,500 square feet on an expansive .4 acre lot. Built in 2015, this 4 bedroom, 3 bathroom home features a flexible layout ideal for multigenerational living, remote work, and entertaining. The main level includes a private primary suite, dedicated home office, and a secondary bedroom with full bath for guests. Soaring ceilings and abundant natural light enhance the open concept living, dining, and kitchen areas. The kitchen features a large center island, double ovens, granite countertops, stainless steel appliances, and ample storage. Wood flooring installed in 2020 adds warmth throughout the main living areas. Upstairs offers two additional bedrooms, a spacious bonus room, and a dedicated media room. The backyard delivers resort style outdoor living with a custom pool installed in 2022, stone patio, pergola, and generous yard space. The oversized lot provides rare privacy within the neighborhood. Energy efficient upgrades include solar panels installed in 2020, downstairs HVAC compressor replacement in 2023, and upstairs HVAC compressor replacement in 2025. Enjoy Paloma Lake amenities including trails, parks, and community pools, with access to Round Rock ISD, SH 130, IH 35, and nearby shopping and dining.

3320 Magellan Ct, Round Rock
$394,990
3 Beds ⋅ 3 Baths ⋅ 6262153 MLS ⋅ 78681 Zip Code
***Limited Time 3% Bonus Incentive and Move-In Package Through 7/31! Move-In Package Includes Washer, Dryer, Refrigerator and Blinds!*** Welcome to Solara, a boutique, gated new-construction community ideally located in northwest Round Rock, just minutes from MoPac, SH 45, and The Domain. Recently completed, these thoughtfully designed residences offer a rare blend of modern efficiency, upscale finishes, and everyday convenience in an established area with excellent walkability to nearby restaurants, retail, grocery, and fitness options. Each home features an open-concept layout with an attached garage, stone and stucco exterior, and a private fenced backyard. The well-planned floor plan includes a first-floor office with a full bath, spacious second-floor bedrooms with a luxurious primary suite, and a third-floor loft ideal for a second living area, media room, or home gym. Interior highlights include quartz countertops, shaker-style cabinetry, luxury vinyl plank flooring, Energy Star appliances, and high-efficiency HVAC systems designed for comfort and long-term energy savings. Residents also enjoy access to Brushy Creek MUD amenities, including miles of hike-and-bike trails, parks, and optional pool and fitness facilities. Homes come with a comprehensive builder warranty, and the builder is offering contributions toward interest rate buydown and/or closing costs with use of the preferred lender—adding meaningful value in today’s market. Zoned to highly rated Round Rock ISD schools and conveniently positioned near major employers, shopping, and entertainment, Solara presents an exceptional opportunity to own quality new construction with low-maintenance living and strong long-term appeal.

104 Tesla Cir, Round Rock
$429,990
3 Beds ⋅ 3 Baths ⋅ 3087598 MLS ⋅ 78681 Zip Code
***Limited Time 3% Bonus Incentive and Move-In Package Through 7/31! Move-In Package Includes Washer, Dryer, Refrigerator and Blinds!*** Welcome to Solara, a boutique, gated new-construction community ideally located in northwest Round Rock, just minutes from MoPac, SH 45, and The Domain. Recently completed, these thoughtfully designed residences offer a rare blend of modern efficiency, upscale finishes, and everyday convenience in an established area with excellent walkability to nearby restaurants, retail, grocery, and fitness options. Each home features an open-concept layout with an attached garage, stone and stucco exterior, and a private fenced backyard. The well-planned floor plan includes a first-floor office with a full bath, spacious second-floor bedrooms with a luxurious primary suite, and a third-floor loft ideal for a second living area, media room, or home gym. Interior highlights include quartz countertops, shaker-style cabinetry, luxury vinyl plank flooring, Energy Star appliances, and high-efficiency HVAC systems designed for comfort and long-term energy savings. Residents also enjoy access to Brushy Creek MUD amenities, including miles of hike-and-bike trails, parks, and optional pool and fitness facilities. Homes come with a comprehensive builder warranty, and the builder is offering contributions toward interest rate buydown and/or closing costs with use of the preferred lender—adding meaningful value in today’s market. Zoned to highly rated Round Rock ISD schools and conveniently positioned near major employers, shopping, and entertainment, Solara presents an exceptional opportunity to own quality new construction with low-maintenance living and strong long-term appeal.

102 Tesla Cir, Round Rock
$825,000
4 Beds ⋅ 4 Baths ⋅ 2327032 MLS ⋅ 78681 Zip Code
In a world of cookie-cutter subdivisions and tiny backyards, Tonkawa Springs offers something increasingly rare: room to spread out, mature trees, spring-fed ponds, and a neighborhood where nature and community still take center stage. Set beneath mature shade trees on a spacious lot, this thoughtfully updated home features four bedrooms plus two additional flex rooms that can easily serve as guest rooms, home offices, a gym, craft room, playroom, or homeschool space. Every bedroom is generously sized, and abundant storage throughout helps keep daily life organized. Recent improvements blend comfort and character, including triple-pane vinyl windows, beautiful acacia wood flooring, and a chef-inspired kitchen equipped with a Fratelli Onofri double gas range, built-in wall oven, and microwave. The gameroom showcases reclaimed wood from Camp Mabry, creating a one-of-a-kind focal point. The backyard was designed for gathering. Whether you're hosting pool parties, roasting marshmallows around the firepit, watching the game from the cabana bar, or enjoying a quiet evening beneath the heritage oak, there is room here to create memories for years to come. A large composite deck expands the entertaining space, while the magnificent heritage oak provides shade, beauty, and plenty of room for backyard adventures. For buyers seeking additional backyard privacy, landscaping or 6-foot wood privacy fencing would allow you to customize the outdoor space to your preferences. (But you may find you WANT to get to know the neighbors-they are pretty great!) Tonkawa Springs remains one of Round Rock's most distinctive neighborhoods, known for its spring-fed ponds, abundant wildlife, mature trees, oversized homesites, and strong sense of community—all just minutes from top-rated schools, shopping, dining, and major employers. Opportunities in this neighborhood don't come up very often, so don't miss your chance!

1801 Sun Lake, Round Rock
$444,990
3 Beds ⋅ 3 Baths ⋅ 5664330 MLS ⋅ 78681 Zip Code
***Limited Time 3% Bonus Incentive and Move-In Package Through 7/31! Move-In Package Includes Washer, Dryer, Refrigerator and Blinds!*** Welcome to Solara, a boutique, gated new-construction community ideally located in northwest Round Rock, just minutes from MoPac, SH 45, and The Domain. Recently completed, these thoughtfully designed residences offer a rare blend of modern efficiency, upscale finishes, and everyday convenience in an established area with excellent walkability to nearby restaurants, retail, grocery, and fitness options. Each home features an open-concept layout with an attached garage, stone and stucco exterior, and a private fenced backyard. The well-planned floor plan includes a first-floor office with a full bath, spacious second-floor bedrooms with a luxurious primary suite, and a third-floor loft ideal for a second living area, media room, or home gym. Interior highlights include quartz countertops, shaker-style cabinetry, luxury vinyl plank flooring, Energy Star appliances, and high-efficiency HVAC systems designed for comfort and long-term energy savings. Residents also enjoy access to Brushy Creek MUD amenities, including miles of hike-and-bike trails, parks, and optional pool and fitness facilities. Homes come with a comprehensive builder warranty, and the builder is offering contributions toward interest rate buydown and/or closing costs with use of the preferred lender—adding meaningful value in today’s market. Zoned to highly rated Round Rock ISD schools and conveniently positioned near major employers, shopping, and entertainment, Solara presents an exceptional opportunity to own quality new construction with low-maintenance living and strong long-term appeal.

100 Tesla Cir, Round Rock
$309,900
3 Beds ⋅ 2 Baths ⋅ 7695800 MLS ⋅ 78665 Zip Code
SHORT SALE OFFERS ACCEPTED - BRING ALL OFFERS! Great affordable home in the popular Siena community in Round Rock. From the moment you step through the front door, you’ll feel the inviting warmth of this thoughtfully designed one-story home. Just off the entry, a dedicated office with elegant glass French doors offers a quiet space for working from home, diving into crafts and hobbies , or simply enjoying a moment of calm. As you move into the heart of the home, the open-concept kitchen, dining, and living areas create the perfect setting for both entertaining and everyday living. The kitchen features sleek black appliances, a center island ideal for meal prep or casual dining, and a built-in computer workspace just off to the side—great for homework or catching up on your favorite recipes. After a long day, retreat to the spacious primary suite where you can unwind in the garden tub, rinse off in the separate shower, and enjoy the convenience of dual vanities and a generous walk-in closet. Two secondary bedrooms are situated in their own private wing, sharing a full bath and offering comfort and privacy for family or guests. Outside, a large backyard invites your imagination—bring your vision to life with a garden, playscape, or a cozy outdoor entertaining area. With easy access to Hwy 79 and Toll 130, and just minutes from Dell Diamond, Kalahari Resort, Old Settlers Park, and so much more, this home offers the perfect blend of peaceful living and vibrant community connection.

5741 Porano Cir, Round Rock
$483,000
3 Beds ⋅ 3 Baths ⋅ 9456856 MLS ⋅ 78681 Zip Code
Set on a quiet cul-de-sac in Wood Glen, this two-story home offers a flexible layout, generous lot size, and multiple living spaces that adapt to how you actually live day to day. A welcoming entry opens to a front room currently used as a home office, with the option to function as a formal dining area depending on your needs. Sightlines carry through to the main living space at the back of the home, where the layout opens up and becomes more connected. The kitchen sits at the center, anchored by a large island with granite counters, creating a natural gathering point while remaining open to the living room and breakfast area. Windows along the rear bring in consistent natural light and frame views of the backyard. Upstairs, all bedrooms are located on the second level, including a spacious primary suite with an updated bath featuring a freestanding tub, walk-in shower, and dual vanities. Two additional bedrooms share a full bath, while a second living area provides flexibility for media, work, or play. Out back, the oversized lot offers room to spread out, with lush trees providing shade and a sense of privacy, leaving space for future outdoor improvements or customization. Additional features include laminate flooring throughout much of the home, a fireplace in the main living area, full gutters, and a two-car garage. Conveniently located with access to major corridors, retail, and everyday essentials, this home offers a practical balance of space, layout, and location. The home is close to the nearby community pool, clubhouse, park, sports courts, main roads, shopping, grocery stores, Kalahari Resort, Dell Diamond, Salt Lick, and more.

2030 Kimbrook Dr, Round Rock
$519,000
4 Beds ⋅ 3 Baths ⋅ 6562870 MLS ⋅ 78664 Zip Code
Cul-de-sac beauty nestled in prestigious Forest Creek! Value added Solar Panels installed in 2019, are paid in full with transferable warranty! No electric bill higher than $170! Spacious floorplan provides 3 flex spaces: (1) Coffered ceiling entry area for dining, sitting or entertainment; (2) Oversized 5th room with a walk-in closet, great for officing, media room, playroom, crafts, and more; and (3) Landing area upstairs offers room for a desk, game table or storage with additional attic access. Gorgeous Kitchen & Dining area are great for everyday and entertaining needs, adjacent to an extended, covered back patio which includes mounted TV & ceiling fan! 4 Large bedrooms throughout the home, including the Main Bedroom on lower level, all of which include walk-in closets, blinds & ceiling fans! Added perks are the built in storage cubes, hooks & benches located in the front foyer and laundry/mud room! Garage offers a tandem bay storage space, great for a workshop, recreational items, and refrigerator/freezers. Water Heater & Roof updated in 2022, HVAC 2018. Neighborhood amentities include pool, park, tennis courts, picnic areas, LittleFreeLibrary, and city owned golf course. Easy access to roads, shopping, food, schools, sports & entertainment, including Kalahari Resort, Dell Diamond & Old Settlers Park! A must see that won't last long!

3804 Spyglass Cv, Round Rock
$410,000
3 Beds ⋅ 2 Baths ⋅ 2762787 MLS ⋅ 78665 Zip Code
Welcome to 1310 Quicksilver Street—a spacious and well-maintained 3-bedroom, 2-bath home located on a peaceful cul-de-sac in the desirable Laurel Ridge neighborhood of Round Rock. Offering 1,827 sq ft of single-level living, this home boasts an open and functional floor plan perfect for modern lifestyles. Step inside to find a welcoming foyer, high ceilings, and a bright living room anchored by a cozy gas-log stone fireplace. The kitchen features a breakfast bar, stone countertops, pantry, and flows seamlessly into the family and dining areas—ideal for entertaining or everyday living. A formal dining room and breakfast area offer flexibility for hosting. The spacious primary suite includes a double vanity, walk-in closet, and serene views of the private backyard. Two additional bedrooms and a second full bath provide comfort for family or guests. Additional highlights include tile and carpet flooring, full gutters, pest tubes in walls, and a dedicated laundry area. Enjoy outdoor living with a large covered patio and ample yard space—perfect for relaxing or play. The oversized 3-car garage provides plenty of storage, while the cul-de-sac lot adds privacy and minimal through traffic. Located in Round Rock ISD and minutes from parks, golf, shopping, dining, and major commuter routes—this home is the perfect blend of comfort, convenience, and charm. Upgrades & Features: * 3-Car Garage * Fireplace with Stone Surround * Breakfast Bar & Stone Counters * Cul-de-Sac Lot with Curb Appeal * Nearby Golf Course & Easy Access to I-35 & SH-45 Available for rent as well!

1310 Quicksilver St, Round Rock
$3,400,000
2559984 MLS ⋅ 78665 Zip Code
Prime Development Opportunity in the Heart of Round Rock! This rare 9.15-acre tract offers great potential with flexible, unzoned land use that could be ideal for a variety of different types of projects. This land is located directly between Kenny Fort Blvd and Rusk Rd and provides seamless access to IH-35, TX-130, and SH-45. A 12" water line runs along Rusk Rd which can potentially support future infrastructure. Up to 19 contiguous acres may be available - contact agent for details.

1294 Johnson Ln, Round Rock