Mark Costello

Weatherford, Texas

Top DFW Realtor | 100+ 5-Star Reviews | Full-Service Real Estate

We’re Mark and Brandy Costello, a Weatherford-based husband-and-wife real estate team serving Parker County and the greater DFW area. Originally launched in North Dallas (Collin County), we’ve built a track record that places us in the top 10% of agents across DFW, backed by over 100 five-star reviews from clients who value our personal, hands-on approach.

While our primary focus is residential real estate, our expertise also covers farm and ranch properties, light commercial transactions, and multi-family investment sales and leasing.

Mark’s experience in residential and commercial construction and renovations provides clients with insights most agents simply can’t offer. Brandy’s background in property appraisal and eye for design help clients envision the full potential in every home or investment.

For investor clients, we offer a true full-service experience. The Costello Group is supported by Costello Property Management, providing comprehensive property management services for single-family and multi-family portfolios — ideal for clients looking to expand and protect their investments.

When you choose us, you work directly with us. We don’t delegate your journey to assistants or pass you off mid-process. From start to finish, we handle every detail with clear communication, personal attention, and proven experience.

We’re also the proud parents of three boys, and we understand how life-changing real estate can be — it transformed our family’s future, and we’re passionate about helping it transform yours.

 

Our commitment is to deliver the most current market data available, and we pride ourselves on being a team of caring, knowledgeable professionals dedicated to guiding you through every step of buying or selling your home.

Newest Listings

$1,670,000
4 Beds ⋅ 5 Baths ⋅ 21382138 MLS
LUXURY home set on a RARE fully FENCED 1.38-acre premium homesite, nearly brand NEW single-story Toll Brothers floorplan enjoys one of Windsor Springs’ most distinctive settings * One of a select few homes in the community offering the coveted combination of trees & water views * The property is framed by established trees and overlooks the water on multiple sides, creating a sense of privacy and tranquility * Ideally positioned along the north shore of Lewisville Lake, the community is minutes from area marinas and Dallas Yacht Club and sits directly across from Prestonwood Polo Club. Nearby shopping, dining, groceries, and entertainment provide everyday convenience without sacrificing the serenity and privacy of acreage living ** $300,000 ++ in upgrades & improvements elevate this home well beyond its original luxury specifications-from the 48” Wolf gas range & Hood + 2 Ovens, the sophisticated builtin technology to the custom motorized window treatments, expansive outdoor living and beautifully finished interiors, every detail has been thoughtfully considered *Beautifully designed floorplan for both comfort & effortless entertaining *Wide-plank oak hardwood flooring carries through the main living spaces, while a private office provides an ideal work-from-home retreat. *Separate flex room offers versatility as a private media room, game room or fitness-craft studio * The light-filled great room features a floor-to-ceiling stone FP and dramatic multi-panel sliding glass doors that open seamlessly to the covered outdoor living area with FP & motorized Screen for year round enjoyment *Kitchen is designed to impress w-extensive custom cabinetry & pull-out storage * An enormous walk-in pantry w-upgraded butler’s pantry provide storage & entertaining space *2 TANKLESS water Heaters *10x10 separate laundry room w-sink *Home Integrated tech package w- 3 custom TV system w-soundbar, Sonos whole home audio surround sound speaker system & security camera's WILL ALL CONVEY

1733 Aspen Xing, Oak Point
$2,350,000
4 Beds ⋅ 5 Baths ⋅ 21382207 MLS
Experience luxury waterfront living in River Ranch on the Brazos, the DFW area's premier gated community. This warm contemporary estate showcases exceptional craftsmanship, elegant design, and breathtaking views. Inside, white oak flooring and custom white oak cabinetry create a cohesive, sophisticated aesthetic throughout the kitchen, primary suite, and main living spaces. The expansive living room is anchored by a dramatic porcelain-wrapped fireplace, while oversized windows flood the home with natural light and showcase the surrounding beauty. The chef's kitchen is a true showpiece, featuring premium KitchenAid commercial-grade appliances, including a built-in refrigerator and freezer, 36-inch gas range, under-counter microwave, and beverage refrigerator. A striking waterfall island showcases Broadway Black leathered quartz countertops, complemented by a full-height matching backsplash and sleek floating shelves for a clean, modern design. Designed as a private retreat, the primary suite features dual walk-in closets and French doors opening to a second-floor patio. The spa-inspired bath offers vaulted ceilings with a designer chandelier, separate floating vanities topped with Taj Mahal quartzite, and a stunning Japanese soaking tub. Created for both entertaining and everyday living, the home also includes a private first-floor office, a custom spiral staircase connecting the main living area to the outdoor kitchen, a third-floor reading nook perfect for children, and a private elevator spacious enough to accommodate multiple guests. This is more than a home. It's a destination.

1046 River Ranch Ln, Weatherford
$3,250,000
4 Beds ⋅ 5 Baths ⋅ 21381652 MLS
From the vision of one of Lakewood's premier home builders, Marcus Taylor of English Heritage Homes you will find 6421 Blanch Circle, a soft contemporary design built to bring the unique and secluded lakeside location into play with seamless design bringing the incredible lakeside natural environment into almost all of the interior design and living space. Built as the Taylor's family home, that doubles as both entertaining space and family gatherings with banks of sliding pocket doors that open to pool, outside living, and incredible views of the lake and natural elements of the site, complete with four full bedrooms all with ensuite baths, including primary suite with views of lake, balcony, and spa like bath with garden tub, over-size shower and incredible closet space. The open space design plan brings the Kitchen, living, and dining as well as all the outside space into play, and the living room has a nine-foot bank of windows that doubles as an accordion pocket door that opens to the pool and lake. The kitchen is complete with six burner Thermador pro gas range and hood, 48 built in refrigerator, incredible island workspace with waterfall granite top and breakfast bar. Butlers' area with prep sink adds to the functionality of the space. The living room seamlessly brings the kitchen dining and outside space together while enhancing the entire space with incredible fireplace and wall of rift sawn walnut paneling and flat panel video monitor that can be hidden behind a walnut panel. The outside space is a unique resort experience with heated pool, lounge and covered seating area all overlooking landscaped grounds, and lakeside views! Don't miss the opportunity to be in Dallas's best urban neighborhoods, within minutes to downtown Dallas, White Rock Lake and Park, and in award winning Lakewood Elementary!

6421 Blanch Cir, Dallas
$1,425,000
5 Beds ⋅ 6 Baths ⋅ 21374197 MLS
Commanding a premier, center-stage position on the exclusive island of Lake Viridian, this custom Drees estate offers rare, unobstructed open-water views that set it distinctly apart. Begin your evenings on the expansive dual front porches taking in broad, western horizons across the lake for arguably the most enviable sunset views in all of DFW. Inside, soaring ceilings, clean architectural lines, and oversized picture windows invite sweeping natural light throughout. Designed for effortless hospitality, the main level features generous formal spaces, a dedicated executive study, a pocket office, a functional mudroom connecting to a three-car split garage (two-car main bay plus a separate single-car bay), and two primary suites—including a lavish owner’s retreat complete with vaulted ceilings, a freestanding soaking tub, and a custom newly installed steam shower. At the center of the home, the chef’s kitchen is anchored by an oversized island, custom cabinetry, and a walk-in pantry. Upstairs hosts a spacious secondary living retreat, three generous bedrooms and bathrooms (including two private en-suites), and an authentic cinematic experience: a dedicated media room equipped with a 100-inch projector screen and integrated surround sound. The private backyard oasis is an entertainer’s showpiece framed by manicured landscaping, a covered patio with a built-in grill, and a sparkling pool and spa thoughtfully positioned to capture clear, open sightlines of Lake Viridian. Curated for the discerning buyer seeking true island luxury—sailing, miles of shoreline trails, tennis, and serene privacy, all mere minutes from major highways, AT&T Stadium, DFW Airport, and major commerce hubs.

1332 Island Vista Dr, Arlington
$1,870,000
4 Beds ⋅ 4 Baths ⋅ 21381436 MLS
Set on more than 2 acres within the sought-after Palomino Bay community, this completed D BEST Starr Construction custom home combines thoughtful design, generous space, and the privacy of acreage living. Offering 4 bedrooms, 3 full bathrooms, and 1 half baths, the residence was designed with both comfortable everyday living and effortless entertaining in mind. Expansive living spaces create a seamless connection to the outdoors, while the generous homesite provides flexibility for future additions such as a pool, guest house, or additional garage. Located in the rapidly growing city of Sanger, Palomino Bay offers a unique opportunity to enjoy a quieter, more private lifestyle while remaining within convenient reach of the DFW metroplex. The area continues to see exciting growth, including a new 5A high school and expanding retail and dining options. Lake Ray Roberts and the marina are just minutes away, with ongoing improvements bringing new boat slips, dining, and an updated boat launch to the area. For those looking for the space and privacy of acreage without sacrificing access to modern conveniences, this completed custom home offers the rare opportunity to move in and enjoy immediately—without the extended timeline of building from the ground up. Experience the best of small-town living, lake-area recreation, and thoughtfully designed luxury at Palomino Bay.

1071 Lakeway Dr, Sanger
$1,999,000
4 Beds ⋅ 5 Baths ⋅ 21380974 MLS
Set on more than 2 acres within the sought-after Palomino Bay community, this completed D BEST Starr Construction custom home combines thoughtful design, generous space, and the privacy of acreage living. Offering 4 bedrooms, 3 full bathrooms, and 2 half baths, the residence was designed with both comfortable everyday living and effortless entertaining in mind. Expansive living spaces create a seamless connection to the outdoors, while the generous homesite provides flexibility for future additions such as a pool, guest house, or additional garage. Located in the rapidly growing city of Sanger, Palomino Bay offers a unique opportunity to enjoy a quieter, more private lifestyle while remaining within convenient reach of the DFW metroplex. The area continues to see exciting growth, including a new 5A high school and expanding retail and dining options. Lake Ray Roberts and the marina are just minutes away, with ongoing improvements bringing new boat slips, dining, and an updated boat launch to the area. For those looking for the space and privacy of acreage without sacrificing access to modern conveniences, this completed custom home offers the rare opportunity to move in and enjoy immediately—without the extended timeline of building from the ground up. Experience the best of small-town living, lake-area recreation, and thoughtfully designed luxury at Palomino Bay.

1111 Lakeway Dr, Sanger
$2,399,000
5 Beds ⋅ 6 Baths ⋅ 21338542 MLS
Sited on the most sought-after location, overlooking a pond and fountain at its edge, this residence in Town Lake at Flower Mound brings together a rare lakeside parcel and a caliber of craftsmanship ordinarily reserved for a fully bespoke commission. Entry is through a two-story foyer clad in custom millwork, where a pair of curved staircases sweeps upward and the eye travels uninterrupted through the length of the house. The formal dining room lies to one side beneath a bespoke coffered ceiling with wallpaper. Opposite it, a private study with an exposed beamed ceiling takes in the front lawn. The two-story living room dissolves into the loggia through expansive walls of sliding glass. Adjacent, the chef's kitchen is composed around a monolithic waterfall island, a gas range beneath a custom hood, double ovens, a walk-in pantry, and a butler's pantry that carries service discreetly to the dining room.The main-floor primary suite extends beyond twenty-five feet and culminates in a spa bath of genuine consequence, freestanding soaking tub, a walk-through shower entered from either side through glass, individual vanities, and dual dressing closets. A second suite on this level, joins an exercise room, laundry, and a mudroom fitted with built-in lockers. The second floor holds three additional bedrooms, each with a walk-in closet, alongside a game room and a media room. Beyond the glass, the covered outdoor living is sheltered by motorized screens, and lit by gas lanterns. The resport caliber pool is anchored by a raised spa and a tanning ledge appointed with in-water chaises, while a rainfall water curtain descends from the pergola cabana, which shelters an outdoor kitchen with grill and bar seating. A second cabana offers shaded lounging and alfresco dining with unobstructed views and some of the best sunsets in Texas. You don't want to miss this one.

3904 Ephron Ave, Flower Mound
$2,999,000
3 Beds ⋅ 3 Baths ⋅ 21369820 MLS
Discover an exceptional ranch estate surrounded by mature trees, rolling pastures, and a beautiful pond, where privacy, functionality, and natural beauty come together. A winding private drive leads to a professionally equipped horse facility designed for serious equestrian operations while providing the peace and tranquility of a premier ranch property. At the heart of the estate is a 14-stall barn, featuring oversized 14' x 14' stalls, a wash rack, tack room, bathroom, and apartment. The property also offers a covered and lighted 100' x 150' arena with multiple doors for excellent airflow and year-round usability. A covered round pen with its own viewing deck provides an additional ideal space for training and riding. The ranch is thoughtfully designed for a turnkey equestrian operation, with extensive infrastructure including multiple pipe-and-cable turnouts, a shavings bin, hay storage, walker, grain bin, and two double-wide mobile homes. With approximately $6,900 per month in current rental income, the property offers an attractive income-producing component and exceptional flexibility for an owner-operator, investor, or multi-generational family. Recent improvements add to the property's appeal and functionality: Roof replaced in 2023 AC unit replaced in 2022 Decks replaced in 2023 Barns painted in 2023 Cooking oven replaced in 2024 New hardwood, luxury vinyl plank flooring Luxury bathtub and steam shower Refrigerator included Whether you're seeking a private equestrian retreat, an income-producing ranch, or a fully equipped horse operation, this exceptional property offers a rare combination of professional equestrian amenities, natural beauty, privacy, and investment potential.

12146 Fm2450 Hwy, Sanger
$9,200,000
5 Beds ⋅ 8 Baths ⋅ 21380226 MLS
Refreshed and a magnificent opportunity to own an architecturally significant landmark on rare 3.38 tranquil acres in the coveted Bluffview area of Dallas. Featuring hard to find ONE STORY footprint skillfully designed by renowned architect Guy Courtney and fashioned after Richard Meier's work on the Getty museum in LA, giving enormous scale and lifestyle to every striking expanse. The approx 9,000sqft of iconic living has been the backdrop for countless movies, TV series, national commercials and publications, and the gathering spot for many large community events in addition to their everyday fun family living. The front entrance gives off a quiet, private approach that was key to the location selection, while the interior and backyard's distinctive modern design showcases the more than 6,000sqft of glass, 71,000lbs of steel giving the most gorgeous unobstructed views of the spectacular nature, tranquil creek setting and the indoor-outdoor lifestyle. At night the home becomes a piece of art all on it's own. Intentionally designed to host the perfect backdrop for the seller's extensive art collection, large scale entertaining needs and resort relaxation that takes in all the privacy and beauty year round. The open concept gourmet kitchen enjoys 4 ovens, 3 sinks and a silver cloth lined pantry for optimal entertaining needs. Lighting consultants evaluated every inch to ensure the perfect scene and zone control, acoustically pure media room, and over engineered construction throughout, 3 ventilation systems protecting crawlspace, living area and roof, extra large limestone flooring blend inside and out seamlessly, and steel to hold the large 20 ft glass panes without mullions or columns in the corners for unobstructed views. A rare opportunity to own a celebrated, well-loved Bluffview landmark on the serene tree-lined street within minuets of downtown, Highland Park village and all the coveted private schools. Spectacular!

4130 Cochran Chapel, Dallas
$1,399,990
3 Beds ⋅ 4 Baths ⋅ 21380380 MLS
INVESTORS! This is a prime income producing opportunity located in Fort Worth Boat Club! Experience elevated lake living in these stunning new construction luxury condos in the sought-after Boat Club Terrace community with breathtaking Eagle Mountain Lake views. Designed with sophisticated modern architecture and upscale finishes throughout, these 4-story residences offer approximately 3,400 square feet of thoughtfully designed living space featuring 4 spacious bedrooms, 3 bathrooms, and private elevator access to every level. The open-concept living area is filled with natural light and showcases wide-plank hardwood flooring, designer lighting, oversized windows, and a chef-inspired kitchen complete with oversized waterfall islands, custom cabinetry, premium appliances, wine storage, and abundant entertaining space. The expansive primary suite offers a spa-like bath, custom walk-in closet, and serene retreat-style ambiance. Outdoor living reaches the next level with a private rooftop terrace featuring an outdoor kitchen and panoramic Eagle Mountain Lake views—perfect for entertaining, relaxing, or enjoying unforgettable sunsets. Additional highlights include modern glass garage doors, oversized garage space, luxury tile finishes, designer fixtures, spacious utility room with built-ins, and contemporary architectural details throughout. Residents enjoy resort-style amenities including a luxury community pool and private boat dock access, making this property ideal for full-time living, weekend lake escapes, or investment opportunities. Conveniently located near dining, entertainment, marinas, and major highways while still offering the tranquility of lakeside living. Luxury, lifestyle, and investment potential all come together in this exceptional Boat Club Terrace opportunity.

9216 Live Oak Ln Unit 1, Fort Worth
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Listings provided by North Texas Real Estate Information Systems (NTREIS). Listing data has been deemed reliable but is not guaranteed to be accurate by the MLS.

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