Buying a Multigenerational Home: What to Consider Before Combining Households
WHAT YOU'LL LEARN
Why more families are considering multigenerational homes
How combining finances can affect mortgage qualification
What to decide before choosing a home together
WHAT YOU'LL LEARN
Why more families are considering multigenerational homes
How combining finances can affect mortgage qualification
What to decide before choosing a home together
A multigenerational home can reduce housing costs, make caregiving easier, and give family members access to a home they might not be able to afford on their own. But combining households requires important decisions about who buys the home, who's responsible for the mortgage, how expenses should be divided, and what the house needs to provide for each generation.
The tricky part of a multigenerational home is that every generation under that roof will have different financial priorities, expectations, and ideas about how the arrangement should work.
Multigenerational Homebuying Is Changing Who Lives Under One Roof
Multigenerational homebuying is increasingly driven by both caregiving and affordability. In 2026, 14% of homebuyers purchased a multigenerational home, according to the National Association of REALTORS®. Gen X buyers were the most likely generation to do so at 19%, with families commonly combining households to care for aging parents, save money, or accommodate adult children moving back home.
The reasons people buy multigenerational homes are changing, too. Cost savings remains an important driver, but recent NAR research shows that caring for aging parents has become an increasingly important reason families purchase multigenerational homes.
How to Decide Who Will Own the Home and Be on the Mortgage
Living in a multigenerational home together doesn't mean every adult in the household has to be a borrower on the mortgage. When multiple people apply together, the lender evaluates the applicable income, assets, debts, and credit profiles used to qualify for the loan. Co-borrowers also assume financial responsibility for the mortgage, making the decision about who applies for the loan an important part of planning the purchase.
In our experience, the best borrower combination isn't always the one with the most people or the most income. Atlantic Bay Mortgage Bankers can compare different borrower combinations before a family applies. Adding another borrower's income may help qualification, but that person's debts and credit profile also become part of the mortgage application.
Sharing a Home Doesn't Mean Sharing Every Expense
Before buying a multigenerational home, it's important to decide how the household finances will actually work. The mortgage is only one expense, and assumptions about who will pay for what can become hard to resolve after everyone moves in. Talk through who will contribute to:
Monthly mortgage payments
Property taxes and homeowners insurance
Utilities and household expenses
Maintenance and repairs
Renovations or accessibility improvements
Who contributes to household expenses and whose income can be used to qualify for the mortgage are not necessarily the same thing. Your mortgage banker can explain which income, assets, and borrowers can be considered for the loan you're applying for.
The Right House Matters as Much as the Right Mortgage
A good multigenerational home needs to work for the family you're buying for today and the one you may become as years go by. Consider privacy, separate living areas, bedroom and bathroom locations, accessibility, parking, and whether the layout can adapt as children become adults and parents age.
A thoughtful floor plan that gives each generation appropriate space, privacy, and independence may matter more than additional square footage.
Is a Multigenerational Home Right for Your Family?
Some financial and practical considerations include:
Reasons It May Work | Reasons to Think Twice |
|---|---|
Housing costs can be shared. | Financial expectations aren't clearly defined. |
Aging parents can be closer to family and care. | Family members need more privacy or independence. |
Multiple incomes may strengthen buying power when eligible borrowers apply together. | A co-borrower's debts or credit could affect qualification. |
One home may replace the cost of maintaining multiple households. | You aren't sure how long everyone will live together. |
The home can accommodate changing family needs. | The property doesn't provide enough separation or flexibility. |
The best multigenerational home is more than a house that’s large enough for everyone. It's a home and financing structure that work for the people sharing it.
Before you start house shopping, an Atlantic Bay Mortgage Banker can help your family understand who should apply for the mortgage, how different borrower combinations may affect qualification, and what financing options fit the way you plan to live.
The people on title are the legal owners of the property, so deciding how the home will be titled is different from deciding who will live there or contribute to the monthly expenses. When multiple generations contribute money toward a home, ownership should be discussed before the purchase, including what each person's contribution means and what happens to their ownership interest if circumstances change. Title has legal, tax, and estate-planning consequences, so families should consult an attorney or tax professional about the ownership structure.
There is no standard way for a multigenerational household to divide its expenses. Families can contribute equally, divide costs based on income, assign specific expenses to different household members, or create another arrangement that works for them. What matters is distinguishing the family's payment arrangement from the mortgage itself: borrowers remain responsible for the mortgage according to the loan documents regardless of how the household has agreed to split the payment. Atlantic Bay's guide to monthly homeownership expenses can help families identify costs beyond the mortgage that should be part of that conversation.
That can become complicated if the person leaving is also on title or on the mortgage loan. Moving out does not automatically remove someone from the property's title or mortgage, and an owner generally cannot simply take their share of the home's equity with them. Depending on the ownership and loan structure, the family may need to refinance, sell the property, arrange a buyout, or consider another solution. This is one reason families should discuss an exit plan with appropriate legal and financial professionals before buying together.