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Modern farmhouse meets multigenerational living in the Wellington Duplex, designed by GMD Design Group.
This article first appeared in the March 2020 issue of Pro Builder.

Statistics vary, but it’s safe to say that about 40% of homebuyers are considering the possibility of accommodating an older parent, adult child, or grandchild in their homes—a trend that will substantially alter the future of U.S. housing design. For economic and social reasons, many families are now trying to figure out how to manage a multigenerational household, but very few homes are truly designed to allow combined living spaces and maintain a reasonable amount of privacy for family members. Considering the sizable market for multi-gen product, our design team presents concepts and completed homes here that address these new living arrangements.

Wellington Duplex

DESIGNERS: GMD Design Group, Scott Gardner, AIA, scott@gmddesigngroup.com, 919.320.3022

Donnie McGrath, donnie@gmddesigngroup.com, 770.375.7351

DIMENSIONS: Width: 66 feet, Depth: 74 feet, Living area: 2,324 sf

This duplex (shown, above) is designed to provide a somewhat higher density solution for two extended families. The owner’s suite and multigenerational suite are both on the main floor, which is very desirable for many buyers.

In addition to the generous first floor, there is a large loft on the second floor to provide additional space-use flexibility.

first floor plan of the Wellington Duplex multigenerational home design by GMD Design Group

plan key for the Wellington Duplex multigenerational home design by GMD Design Group

second floor plan for the Wellington Duplex multigenerational home design by GMD Design Group

RELATED: Design Trends in Multi-Generational Housing


The Union

DESIGNER: DTJ Design, Seth Hart, shart@dtjdesign.com, 303.443.7533

DIMENSIONS: Width: 55 feet, Depth: 70 feet, Living area: 3,740 sf

This multigenerational house plan maximizes function while also focusing on flexibility. The multi-gen suite has direct access from the main home, the garage, and a private front porch, which allows access to the unit without disturbing the rest of the home. The common wall between the multi-gen suite and the main home is designed as a double wall with additional sound insulation to provide enhanced privacy for occupants on either side.

The key to this plan, however, is its flexibility in function. The two plan options address how, when there is no longer a need for multi-gen living, the suite could be repurposed into either an accessory dwelling unit or a main floor master for someone to age in place. The additional plan variations could also be offered direct from the builder as one floor plan with various options to appeal to a broader buyer segment.

front elevation of The Union multigenerational house design by DTJ Design

multi-gen suite plan of The Union multigenerational house design by DTJ Design

p[lan key for The Union multigenerational house design by DTJ Designmain floor master option for The Union multigenerational house design by DTJ Design

accessory dwelling unit plan for The Union multigenerational house design by DTJ Design

Plan 1

ARCHITECT: Dahlin Group Architecture | Planning, marketing@dahlingroup.com, 925.251.7200

DIMENSIONS: Width: 70 feet, Depth: 114 feet, Living area: 2,939 sf

This plan offers single-story living with flexibility to fit a number of multigenerational family and co-living arrangements. In keeping with buyer preferences, the common living spaces are spacious and open. The multi-gen option replaces a one-car garage and guest bedroom.

Hidden Ridge is a neighborhood of 22 single-family detached homes nestled within an established neighborhood that was once a citrus orchard. It offers a 15-mile commute to CSU Sacramento and to the jobs, shopping, entertainment, and cultural activities of downtown Sacramento. | Photos: Douglas Sterling Photography

front elevation of Plan 1 multigenerational home design by Dahlin Group Architecture Planning

floor plan of Plan 1 multigenerational home design by Dahlin Group Architecture Planning

plan key for Plan 1 multigenerational home design by Dahlin Group Architecture Planning

kitchen in Plan 1 multigenerational home design by Dahlin Group Architecture Planning

interior living room in Plan 1 multigenerational home design by Dahlin Group Architecture Planning

Topaz Plan 4

ARCHITECT: Kevin L. Crook Architect, Kevin Crook, kcrook@klcarch.com, 949.660.1587

DIMENSIONS: Width: 50 feet, Depth: 77 feet, 6 inches, Living area: 4.100 sf

This multigenerational home provides a lock-off single-level multi-gen suite, creating a home within a home. A dedicated single-car garage and breezeway entrance ensure privacy, while a secondary interior entrance allows direct access when needed.

Essentially a one-bedroom home with a study and open-concept living, dining, and kitchenette, this multi-gen design offers secluded living spaces for all.

Topaz Plan 4 home design front elevation by Kevin Crook architect

Topaz Plan 4 home design first floor plan by Kevin Crook architect

Topaz Plan 4 plan key for multigenerational home design by Kevin Crook architect

Topaz Plan 4 home design second floor plan by Kevin Crook architect

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