These days, multi-family homes are becoming increasingly more popular. As kids come home from college and live with their parents while they get on their feet, or aging relatives come to live with the younger generation, or even brothers and sisters raise their families under the same room, multigenerational house plans have become even more common for these various living arrangements. There are many different ways to accommodate a large number of adults living under one roof, and most of these types of homes offer a great value for families who want to stay together and save money. If you are considering your options for building a home that can fit multiple generations of family members, read on for more information about the types of dwellings you’ll find and which one might be right for you and your family.


2340 sq/ft     3 Bed     2.5 Bath


2116 sq/ft     3 Bed     2.5 Bath


2320 sq/ft     3 Bed     2 Bath


 2945 sq/ft    4 Bed     3.5 Bath


1650 sq/ft     3 Bed    2 Bath


 2465 sq/ft    3 Bed     2.5 Bath


2754 sq/ft     3 Bed     2.5 Bath


  1230 sq/ft     2 Bed     2 Bath


 2736 sq/ft     3 Bed     2.5 Bath

Types of Multigenerational House Plans

A single-family home typically has one kitchen, a few bathrooms, and a few bedrooms. With multigenerational house plans, there are a few ways that more family members can be accommodated. These include:

  • By building house plans with separate living quarters, you could have a duplex where two families live on two house sides. This offers the security of the home being connected. Also, the privacy that comes with both sides having their own bathrooms and kitchens. Duplexes are a great option for those who want to be close to family while still maintaining some autonomy.

  • Guests houses are a good option if some family members want more privacy on the same property. In some instances, guest houses will be fully equipped with bathrooms and a kitchen. In others, the guest house may just have a living space and a bathroom. Either way, the house is not attached to the main house. So those who are living in it will feel like they have a bit more privacy.

  • Mother-in-law suite is a great option for those families who have older generations living with them. These elderly family members will have their own bedroom, living area, and bathroom. Also, they will still be in the home with the rest of the family. If they need help, they will be able to get it easily.

Another option not mentioned yet are extended family house plans. This type of plans might have multiple kitchens, and often multiple master bedrooms. This allows family members to live in one main house but still have their separate space. Many adults can live in this type of home, without feeling like they are stepping on each other.

When it comes to building multigenerational house plans, costs can vary. Adding on an in-law suite is not very expensive, but building an entire guest house can be. There are heating and cooling costs to consider, as well as electricity. But, what many find is that in a multi-generation home, there are more adults that are able to contribute to the monthly costs. Everything does not fall on one head of the household. In fact, everyone can share the load and reduce the expenses greatly. Plus, the time spent together and meals shared can be far more valuable than the cost of the home.

If you have extra family members living with you and you want to build a space for everyone, consider multi generational house plans.

House construction drawings

What's included in House Plan Set drawings?

View Drawings List

Cover Sheet and Construction Notes

Foundation Plan

Slab | Crawl | On request - Basement, Pier & Beam, etc.

General foundation design showing foundation layout with structural elements. There are three types of foundation to choose from: slab, crawl, and basement.

As in all building locations ground condition varies, your local structural engineer would need to approve foundation design and specify foundation structural elements.

Plumbing Plan

Shows the layout of plumbing fixtures with specifications.

Floor Plan

Indicates house layout with dimensioned walls, doors and windows.

Roof Construction Plan

Shows the layout and dimensions of the required roof structure such as rafters and beams. As show load requirement is different in each location your local structural engineer would need to approve and specify roof structural elements.

Roof Plan

Dimensioned roof layout indicating slopes, roof areas, chimneys, and decorative elements.


Cut through the building showing detailed floor, wall, and roof construction elements. Indicating room ceiling heights and structural element heights.


Shows all sides of the house indicating building elements with its heights, specified materials, and all decorative elements.

Construction Details

Detailed house cut-away with outline specifications.

Electrical Plan

Floor plan layout indicating locations of electrical elements such as lightning, switches, outlets, etc.


Indicates location and specifications for heating, ventilation and air conditioning.

Furniture Plan

Representative floor plan layout indicating room sizes and suggested furniture layout. Useful during the interior design stage.

Door and Window Schedule

List or all windows and doors with indicated specifications for manufacturer.

General Specifications

Plumbing, electrical and mechanical specifications