The 78th Collection

4 New Luxury Homes

The 78th Collection: Coming Winter 2026. Located in the serene enclave of South Mercer Island, this new extraordinary 4 Lot Neighborhood offers refined architecture in a beautiful and tranquil setting. These new homes are stylistically inspired by a Scandinavian-meets-Northwest design aesthetic, blending clean lines, natural materials, and a warm, timeless sense of comfort. The 78th Collection homes are designed by Phil McCullough and built by Highlands Builders Group.
Everest Modern
Everest Modern
Everest Modern
Four thoughtfully designed residences ranging from 4,500 to 5,000 square feet, offering expansive living spaces tailored for modern luxury living.

At the center of each residence is a meticulously crafted Chef’s kitchen featuring a 60-inch Wolf range, 36” SubZero panel-ready refrigerator and freezer units, custom Bellmont cabinetry package, quartz island with waterfall edge, full-height quartz backsplash and thoughtfully curated finishes. Every element was selected to create a space that is as functional as it is beautiful—an elegant gathering place designed for culinary creativity, entertaining, and everyday moments. Each home offers a large Scullery, or Pantry, with appliances, sink and separate dishwasher.

The expansive Great Rooms are designed with soaring 11’ ceilings, custom finished and curated 60” fireplaces, warm materials and broad windows, creating a space that provides a refined escape.

The Primary Suites offer a private sanctuary designed for relaxation and retreat. Thoughtfully composed with generous proportions, natural light, and thoughtful finishes, the space creates a serene connection to the home’s Scandinavian-meets-Northwest aesthetic.

The Primary Bath is a spa-inspired retreat designed to evoke a sense of calm and relaxation. Featuring elevated finishes, sculptural lighting, elegant fixtures, and natural materials, the space blends refined simplicity with exceptional craftsmanship. A thoughtfully designed layout creates a serene environment where form and function exist in perfect harmony. Each home offers a very large Primary Closet with generous island, or peninsula.

Each home features a covered outdoor living area and a main-level Guest Suite with ensuite bathroom, as well as a Mudroom. A spacious finished 3-car garage defines luxury of space and room.

Each bespoke lighting package is thoughtfully chosen to compliment the architecture and elevate the everyday experience. From statement fixtures to subtle integrated lighting details, the lighting was chosen to enhance each home’s sophisticated elegance.

The residences celebrate natural materials, refined simplicity, and a harmonious connection to its wooded surroundings. Lush landscaping and flat yards.

Lot 1:
Square Footage: 4,930 Square Feet
5 Bedrooms, 4.75 Bathrooms, Office, Bonus Room

Lot 2: Square Footage: 5,226 Square Feet
6 Bedrooms, 4.75 Bathrooms, Rec Room, Bonus Room

Lot 3: Square Footage: 4,486 Square Feet
5 Bedrooms, 4 Bathrooms, Bonus Room, Gallery

Lot 4: Square Footage: 5,082 Square Feet
5 Bedrooms, 4 Bathrooms, Office, Bonus Room

*Square footages are approximate. Renderings are artist’s concept.

PROPERTY DETAILS

Address: 7414 78th Ave SE, Mercer Island, WA
Location: Mercer Island, WA
Specifications: 5-6 Bedrooms Including Main Floor Guest Suite, 4-4.75 Bathrooms, Covered Outdoor Living Area, Kitchen with Scullery, Bonus, Office Per Plan, 3 Car Garage

BUIILT IN COLLABORATION WITH

Architect: McCullough Architects
Interior Design: In-House (Bria Wanichek)

Stay Connected with Highlands Builders Group

To stay informed about the latest news and events at HBG, please provide us with the following information.

Bria Wanichek

Owner/Operations

 
Bria brings over a decade of high-end real estate sales expertise and client relations experience to HBG, and currently serves on the Kirkland Planning Commission. In her former career as a broker with Windermere Real Estate, Bria represented many top area builders, including Bennett Homes and BDR Construction. Bria’s role at HBG includes land acquisition, design and sales oversight, investor relations and outreach and contracts. Her love of real estate and current design trends in the homebuilding industry ensures our continued fresh and modern home designs and interiors.

Bria’s background as a daughter of a homebuilder gives her a unique understanding of the homebuilding process, from land acquisition to delivery of the final product. Bria holds a B.A. in Public Relations and Marketing from Pepperdine University.

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Adam Wanichek

Owner

 
Adam brings over two decades of building experience to Highlands Builders Group. Adam’s career began under Norris Homes, where he built over 50 homes as a Superintendent and created a proprietary scheduling system, keeping costs down and building timelines running smoothly. A position as Construction Manager with Heiser Homes soon followed, which brought him to the close-in Eastside. From there, Adam started BDR Construction, building over 50 homes and townhomes in both traditional and modern design styles.

Adam is respected by his peers, his financial partners and building officials due to his good nature, work ethic and deep understanding of the building process. He has a unique ability to see the art in his work, drawing on his studies in Architecture and Interior Design and his upbringing as a builder’s son. Adam is a member of the Master Builders Association of King and Snohomish County, and the National Association of Homebuilders (NAHB).

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Kimball Taylor

Construction Manager

 
Kimball brings four decades of experience in the construction of spec and high-end custom homes in the Pacific Northwest. As our Construction Manager, Kimball oversees all aspects of the field activities and on-site field operations, as well as the selection of trade partners and bidding. HBG is lucky to have Kimball on-hand providing invaluable insight, expertise and leadership for our building projects. Adam and Kimball’s working relationship began in the early 2000s during their time at Norris Homes, where they built dozens of homes in the south end of King County.

Kimball’s professional history includes Superintendent roles at Norris Homes, LeBaron Homes, Classic Concepts and most recently Dwell.

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Terry Tines

Field Supervisor

 
Terry is our wonderful Field Supervisor. Terry grew up in construction and is familiar with various aspects of the construction phases. We rely on his great attitude and organizational skills to keep our plats and job sites clean, safe and therefore productive.

A clean plat and job site are important to us and we take pride in Terry’s devotion to keeping our sites organized and presentable.

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Barb Tangeman

Operations & Bookkeeping

 
Barb brings decades of experience in Operations and Cost Accounting to HBG. Barb ensures our investors and banking partners receive clear and timely communication for draws & bond follow-up and tracking, to keep projects on time and on budget.

Barb served as the Operations Manager for Sinclair Thimgan Homes on Seattle’s Eastside for a decade, and has been a dedicated and diligent member of the HBG team for many years. Her unique skill set is invaluable to the team.

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Pete Matthews

Superintendent

 
Pete also brings us four decades of experience in the construction industry in the greater Seattle area. Pete spent 20 years in the residential framing industry, framing for large-scale communities and special infill construction alike. He then underwent Construction Management training and served as a Construction Manager for several large area builders for nearly 20 years. HBG is lucky to have Pete’s experience and expertise especially in the realm of framing, as our projects require intricate framing detail and knowledge of the framing process.

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