Multigenerational Living in a Prefab Multiplex

More BC families want to live close to each other without living on top of each other. A prefab multiplex makes that possible: several homes on one lot, each with its own front door. This guide looks at how multigenerational living works in a prefab multiplex and why so many families are choosing it.

The idea in one sentence

Instead of one big house shared by three generations, a multiplex gives each part of the family its own private home on the same lot, close enough to help each other but separate enough to keep independence.

Why families are choosing it

A few things have come together at once:

• Cost. In Greater Vancouver, land is the biggest cost of any home. Sharing one lot among several family homes lowers each household's share of that cost.
• Closeness with privacy. Parents, grown children, and grandparents can live steps apart, each with their own kitchen, bathroom, and front door.
• Support. Childcare, aging parents, and daily help are far easier when family is next door rather than across the city.
• Rules that allow it. BC's small-scale housing rules now let many single-family lots hold three to six homes (Source: Government of BC, small-scale multi-unit housing legislation).

We cover the buyer side of this in our guide to multi-generational living.

Why prefab fits multigenerational living

Building several homes at once is a big project. Prefab makes it faster and more predictable by building the homes in a factory while the lot is prepared. For a family that wants everyone settled sooner, that speed matters. It also keeps the schedule reliable, which lowers financing costs on a larger build. See prefab vs traditional.

Choosing the right size

The number of homes depends on your family and your lot:

• A duplex suits two households, such as parents and one grown child.
• A triplex suits three households.
• A fourplex suits four, or a family that wants some homes for rental income.

Each home is private, so everyone keeps their own space while sharing the land and the closeness.

Planning it well

Living together works best when the practical side is planned early. Agree on how the family will share costs and decisions, and how ownership is structured, with legal and financial advice. Design the homes so each has real privacy, with separate entrances and good sound separation. A good builder helps with the design; professionals help with the ownership setup.

What this comes down to

• A prefab multiplex lets several generations live on one lot, each with their own home.
• Families choose it to share land costs, stay close, and support each other.
• Prefab makes building several homes faster and more predictable.
• Choose the size that fits your family, and plan costs and ownership early.

Thinking about bringing your family onto one lot? Tell us about your household and your lot on our contact page and we will match you with BC prefab builders, or start with our full prefab multiplex guide.

Frequently asked questions

What is a multigenerational multiplex?

It is a small building with several homes on one lot, where different generations of one family each live in their own home. They share the lot but keep separate front doors and private space.

Why do families build a multiplex to live together?

To stay close while keeping independence, to share the high cost of land in Greater Vancouver, and to support each other with childcare or aging parents. Each home stays private.

How many generations can live in one multiplex?

As many as the number of homes allows, commonly two to four households in a duplex, triplex, or fourplex. Larger lots can support more.

Why choose prefab for a family multiplex?

Prefab builds the homes in a factory while the lot is prepared, so a large multi-home project finishes sooner and stays on schedule. That helps a whole family settle faster.

How do we share the cost?

Families often share the land and build costs across households. How ownership is structured, such as strata or a co-ownership agreement, should be set up with legal and financial advice.

Will each home have privacy?

Yes. Each home has its own entrance, kitchen, and bathrooms. Good design includes sound separation between homes, so families live close but private.

What size multiplex should we build?

It depends on how many households you have and what your lot allows. A duplex suits two, a triplex three, and a fourplex four. A builder confirms your lot's limit.

Can some homes be rented out?

Yes. A family can live in some homes and rent others for income, or keep them all in the family. You decide how the building is used.

Does BC allow this on our lot?

In many cases, yes. BC's small-scale housing rules allow several homes on many single-family lots. The exact number depends on your lot, which a builder confirms.

How do we get started?

Tell us about your family and your lot on the contact page. We will match you with BC prefab builders who can design a multiplex that fits everyone.