More families in Southeast Wisconsin are choosing to build one home instead of maintaining two. According to Pew Research Center, roughly 59.7 million Americans live in multigenerational households, a number that has more than doubled since the 1970s. In the Racine, Kenosha, and Milwaukee corridor, that trend is playing out in a very specific way: families with aging parents, returning adult children, or blended-generation households are discovering that existing housing stock simply wasn’t designed for them. As an experienced multigenerational home builder in Racine, WI, Joseph Scott Homes designs and builds custom homes from the ground up to accommodate two generations under one roof without either one feeling like a compromise.

These aren’t entry-level additions or prefab accessory units. The multigenerational homes Joseph Scott Homes builds are fully custom, architecturally intentional residences in the $500K to $1M-plus range, designed so that every family member has genuine privacy, dignity, and comfort while shared spaces bring everyone together on their own terms.

Why Multigenerational Living Is Reshaping Custom Home Design in Southeast Wisconsin

The Racine and Kenosha area sits in an interesting position. It’s close enough to Milwaukee to attract professional families who want space and land, yet anchored enough in its own communities that multi-decade family roots are common. That combination is fueling a real shift in how people think about building.

AARP reports that 27 percent of adults aged 50 to 64 either live in a multigenerational household or expect to within the next five years. For families in Racine County and Mount Pleasant, that often means an aging parent selling a separate home and moving in, an adult child returning after college or a career pivot, or a blended family combining two households into one intentional, purpose-built home.

What existing homes can’t offer is the structural flexibility these arrangements require. Retrofitting a standard single-family home to create genuine privacy for two generations usually produces awkward results: a cramped basement suite, a disconnected garage apartment, or a bedroom wing that still shares the same front door. Purpose-built multigenerational design solves all of that at the blueprint stage, before a single footing is poured.

Families who build rather than adapt end up with a home that actually works for everyone. The investment reflects that. When you’re building a 3,500- to 5,500-square-foot custom home with two full primary suites, separate HVAC zones, dual laundry, and a private entrance for one wing, you’re not cutting corners. You’re making a deliberate decision to get it right from day one.

What a Purpose-Built Multigenerational Home Actually Looks Like

There’s no single template. The range of what Joseph Scott Homes designs for multigenerational clients spans several distinct configurations, and the right one depends entirely on your family’s dynamics, the lot you’re building on, and how much connection or separation each generation needs day to day.

Some families want a true dual-wing layout: two complete living zones connected by a shared great room or breezeway, each with its own kitchen, laundry, primary suite, and exterior entrance. From the outside, it reads as one architecturally cohesive home. Inside, each wing functions as a fully independent residence. This is the right solution for families where an aging parent or adult child needs genuine autonomy.

Other clients prefer a main-home-plus-suite approach. The primary household occupies the main structure, and one wing or an entire main-floor addition serves as a self-contained suite with a private exterior door, full bathroom, sitting room, and kitchenette. This configuration works well when the second generation will be present but doesn’t need a full second kitchen. Designing a home for aging parents often falls into this category, especially when accessible design on the main floor is a priority.

A third configuration is the full dual-primary layout in a single-floor or one-and-a-half-story plan. Two primary bedroom suites anchor opposite ends of the home, each with its own bathroom and walk-in closet, sharing common living, dining, and kitchen spaces. This works best when two generations want to share daily life but each adult couple or individual still needs a private retreat.

Key Design Features Joseph Scott Homes Builds Into Every Multigenerational Floor Plan

Good intentions don’t make a multigenerational home work. Specific design decisions do. Every floor plan Joseph Scott Homes produces for multigenerational clients is built around a core set of features that address the practical realities of shared living.

Wide hallways and doorways: A minimum 36-inch clear width throughout the secondary suite and main-floor living areas, accommodating walkers, wheelchairs, or just the natural changes that come with aging in place. Universal design principles are built in at the draft stage, not added as an afterthought.
Soundproofing between zones: Insulated interior walls, staggered stud framing, and acoustic-rated assemblies between the two living zones mean that one household’s 6 a.m. morning routine doesn’t become everyone’s alarm clock.
Separate HVAC zones: Two households have different comfort preferences and different schedules. Independent HVAC zones let each generation control their own environment without friction.
Dual laundry: A shared laundry room sounds reasonable until you’re living it. Every multigenerational plan Joseph Scott Homes builds includes dedicated laundry for each living zone.
Private outdoor spaces: A covered porch or patio that belongs to each suite, separate from the main outdoor living area, gives each generation a place to decompress without encroaching on shared space.
Connected but closeable common areas: Pocket doors, barn doors, or hallway vestibules between shared great rooms and private wings let families choose how open or closed each day feels. Connection should be an option, not an obligation.
Main-floor accessible design: For aging-parent configurations, zero-step entries, roll-in showers, lever-style hardware, and curbless transitions are standard inclusions, not upgrades that require negotiation.

These decisions show up in the room-by-room planning process and require a builder who thinks through the full picture of daily life, not just square footage.

In-Law Suites vs. Attached Dwelling Units vs. Full Dual-Primary Layouts: Which Is Right for Your Family?

Buyers sometimes use these terms interchangeably, but they describe meaningfully different things. Understanding the distinction helps families identify the right scope before the design conversation begins.

An in-law suite is a private bedroom and bathroom, often with a sitting area or kitchenette, integrated into the main home. It shares the primary residence’s front door and most living spaces. This is the lightest-touch configuration and works well when the second generation (typically a parent) is relatively active and comfortable with a high level of shared daily life. Costs for this scope, within a custom home project, typically start in the $50,000 to $100,000 range above a comparably sized single-household home.

An attached dwelling unit (ADU) is a fully self-contained living space with its own exterior entrance, kitchen, bathroom, and laundry, physically connected to the main home but functionally separate. This is the right answer for families who need real independence between generations. ADUs within a custom-built multigenerational home are architecturally intentional; they don’t look like additions. The overall project investment for a custom home with a full attached dwelling unit typically falls in the $700,000 to $1M-plus range depending on total square footage, site conditions, and finish level.

Full dual-primary layouts sit in between: a single home where two complete primary suites exist within one open floor plan, sharing living spaces but providing each household with a truly private bedroom suite, bathroom, and often a private sitting room or study. This works best for two adult couples or a family where both generations want to remain highly connected.

If you’re not sure which scenario fits your family, the floor plan design process at Joseph Scott Homes is built to help you figure that out before any money is committed.

Lot Selection and Zoning Considerations in Racine, Mount Pleasant, and Kenosha

Multigenerational custom homes are larger and more complex than standard single-family builds. That complexity starts with the lot.

In Racine County, Mount Pleasant, and Kenosha County, zoning rules, setback requirements, minimum lot sizes, and allowable impervious surface percentages all vary by municipality and sometimes by subdivision. A lot that’s perfectly sized for a 2,800-square-foot single-family home may not have enough buildable area for a 4,500-square-foot multigenerational layout with two private outdoor spaces and a three-car garage. Similarly, some municipalities in the area have specific definitions for accessory dwelling units or secondary living quarters that can affect how a home is permitted and classified.

Joseph Scott Homes works with families to evaluate potential lots before they make a purchase commitment. That evaluation covers setbacks, utility access, soil conditions, and site-specific costs that can significantly affect the overall project budget. The Wisconsin build site checklist is a useful starting point for understanding what to look for before you buy land.

If you’re exploring areas like western Racine County, rural Mount Pleasant, or the Kenosha County townships along the Illinois border, lot availability and zoning flexibility vary considerably. Joseph Scott Homes has built across this entire region and can help you identify sites that will actually support the home you’re planning. See also: why Racine is a strong market for new custom construction and a closer look at the differences between building in Kenosha vs. Racine.

How the Custom Build Process Works for Multigenerational Projects

Multigenerational projects carry a coordination burden that single-household builds don’t. More decision-makers, more competing priorities, and more design variables mean that a fragmented process produces a fragmented result. Joseph Scott Homes manages the entire project under one roof, from initial site evaluation through final walkthrough.

The process typically moves through these phases:

Discovery and design conversation: Before any drawings are produced, Joseph Scott Homes works with your family to understand how you actually live. Who needs what level of independence? Are there mobility considerations? How do shared spaces need to function? These conversations shape the floor plan before a single line is drawn.
Lot evaluation and site planning: If you already own land, Joseph Scott Homes assesses it for multigenerational feasibility. If you’re still searching, the team can help you evaluate candidate sites against your program before you purchase.
Custom floor plan development: Unlike builders who adapt stock plans, Joseph Scott Homes designs floor plans specific to your family’s configuration. The layout is yours, not a modified template.
Permitting and municipal coordination: Racine, Mount Pleasant, and Kenosha each have their own permitting timelines and requirements. Joseph Scott Homes handles that coordination so your family doesn’t have to become municipal code experts.
Construction and quality oversight: One point of contact, consistent communication, and a build process designed to eliminate the surprises that derail timelines and budgets on complex projects.
Final walkthrough and handoff: Both households walk the home together, with dedicated orientation for any accessible design features, separate system controls, or zone-specific mechanicals.

Before signing with any builder on a project of this scope, the right questions to ask a custom home builder are worth reviewing carefully.

Why High-End Families in the Racine Area Choose Joseph Scott Homes for Multigenerational Builds

There aren’t many builders in Southeast Wisconsin who specialize in multigenerational custom construction at this price point. Most production builders don’t offer the flexibility these projects require, and most general contractors don’t have the design experience to anticipate the functional details that make or break a shared living situation.

Joseph Scott Homes has built custom homes across Racine, Mount Pleasant, Kenosha, and the Lake Geneva area for clients who expect precision, clear communication, and a finished product that reflects serious craftsmanship. Multigenerational projects demand all of that, plus a builder who’s comfortable managing complexity across a longer design and construction timeline.

The foundation question alone is worth a dedicated conversation on projects of this size. A multigenerational home with a full basement under both wings has different structural and cost implications than a slab-on-grade or crawlspace configuration, and the right answer depends on the lot and the family’s long-term plans. That’s the kind of decision the basement vs. slab guide can help clarify before the design process begins.

Families building in this range deserve a builder who treats the project as seriously as they do. That means no shortcuts in the design phase, no generic solutions applied to specific family situations, and no surprises buried in allowances or change orders.

Frequently Asked Questions About Building a Multigenerational Home in Racine, WI

Frequently Asked Questions

How much does it cost to build a custom multigenerational home in Racine, WI?

Budget ranges vary based on configuration, total square footage, site conditions, and finish level. A custom home with a full in-law suite typically starts around $600,000 to $750,000 for the overall project in the Racine area. A full dual-wing layout with two complete primary suites, separate kitchens, separate exterior entrances, and independent mechanicals generally falls in the $800,000 to $1.2M range or higher depending on scope. Joseph Scott Homes does not build entry-level or prefabricated configurations; every project is custom-designed and purpose-built for the specific family and site.

What is the difference between an in-law suite and a full attached dwelling unit?

An in-law suite is a private bedroom and bathroom (sometimes with a kitchenette) within the main home’s footprint, sharing the primary entrance and most living spaces. An attached dwelling unit is a fully self-contained living space with its own exterior entrance, full kitchen, bathroom, and laundry, physically connected to but functionally independent from the main home. The right choice depends on how much daily independence each generation needs. Joseph Scott Homes designs both configurations as architecturally cohesive custom homes, not as bolt-on additions.

Can a multigenerational home have two separate addresses or utility meters?

This depends on how the home is permitted and classified by the local municipality. In some cases, an attached dwelling unit can be assigned a secondary address and a separate utility meter, which some families prefer for billing clarity. In other jurisdictions, the home is permitted as a single-family residence regardless of internal configuration. Joseph Scott Homes works through these questions with the relevant municipality during the permitting phase so families understand their options before construction begins.

Does Racine County or Mount Pleasant have zoning rules that affect multigenerational construction?

Yes. Zoning regulations, setback requirements, and definitions for secondary living quarters vary by municipality across Racine County, Mount Pleasant, and Kenosha County. Some areas restrict the size or kitchen facilities of secondary suites; others are more permissive. Lot size and impervious surface limits also affect how large a multigenerational footprint can be on a given parcel. Joseph Scott Homes evaluates these variables during the site selection phase so families aren’t surprised after a lot purchase. Reviewing the Wisconsin build site checklist before purchasing land is a good first step.

How do we design a home that feels connected but still gives each generation real privacy?

The key is designing connection as a choice rather than a default. Joseph Scott Homes uses vestibule transitions, closeable common areas with pocket or barn doors, separate exterior entrances, and private outdoor spaces for each living zone. Acoustic separation between wings (insulated walls, staggered framing) ensures that daily routines don’t bleed through. The goal is a home where two generations can share a meal in the same great room in the evening and wake up the next morning in entirely separate worlds if they want to. That balance is built into the floor plan from the beginning, not managed through behavioral workarounds after move-in.

How long does it take to build a custom multigenerational home from lot selection to move-in?

For a fully custom multigenerational build in the Racine area, a realistic timeline from initial design conversation to move-in is typically 14 to 20 months. That includes a design and permitting phase of roughly 3 to 5 months and a construction phase of 10 to 15 months depending on project complexity, site conditions, and municipal permitting timelines. Multigenerational projects with two full kitchens, separate mechanical systems, and custom accessible design elements tend toward the longer end of that range. Joseph Scott Homes provides a clear project schedule at the start of construction so families can plan accordingly.

Building a multigenerational home is one of the most consequential decisions a family can make, and it deserves a builder who takes the full picture seriously: the design details that make shared living work, the site variables that affect what’s buildable, and the construction process that delivers a finished home without the chaos that complex projects can produce. If your family is thinking about building in Racine, Mount Pleasant, Kenosha, or anywhere in Southeast Wisconsin, the best next step is a direct conversation about what you’re trying to accomplish.

Start the conversation about your family’s home. Reach out to Joseph Scott Homes to discuss your multigenerational project, your timeline, and what the right configuration might look like for your situation. There’s no sales pitch involved, just a straightforward discussion about whether this is the right fit.