Learn about ADUs, HEART's program to increase the number of environmentally friendly ADUs built by providing homeowners with free designs, and San Mateo County's Second Unit Center.

Help us create designs with the features you would like in your ADU!

• Are you interested in having a storage loft or more closet space on the ground level?
• Do you need one or two bedrooms?
• What appliances are a must in your kitchen?
• Comments made about floor plans and internal amenities—green or otherwise—could improve the living space for occupants. Perhaps you’ve seen a great space-saving feature that should be included in the designs. Please let us know by attending one of our Open Houses and learning more about ADUs!