Granny Homes, founded by Jason Lewis, is a Sacramento-based ADU contractor specializing in attached ADUs, detached backyard cottages, and garage conversions. They offer full-service design, permitting, and construction for functional, affordable accessory dwelling units.

Granny Homes – ADU Contractor in Roseville, CA

About Granny Homes

About Granny Homes and Its Founder

Granny Homes was founded by Jason Lewis, who grew up learning the construction trade under the guidance of his father, Herman Lewis, an architect and General Contractor based in the greater Sacramento region. Through years of hands-on experience, Jason developed a solid understanding of architectural principles, project management, and client relations. That background laid the groundwork for his eventual founding of Granny Homes.

Jason established Granny Homes with a focus on designing and building accessory dwelling units (ADUs) that are functional, affordable, and suited to modern living. His approach reflects an interest in sustainability, community development, and thoughtful residential design. Granny Homes has since grown into a recognized ADU contractor serving homeowners looking to expand or improve their properties.

ADU Services Offered by Granny Homes

Granny Homes offers a range of ADU construction services aimed at helping homeowners make better use of their properties. Whether the goal is multi-generational living, generating rental income, or simply adding usable space, the company provides tailored solutions. Their core services include:

  1. Attached ADUs – Extensions or converted spaces integrated within the existing property structure, designed to blend with the home while adding functional living areas.
  2. Detached ADUs – Custom-built standalone units such as backyard cottages, studios, and separate dwelling units. As a detached ADU builder, Granny Homes focuses on integrating these structures with the existing outdoor space.
  3. Garage Conversions – As a garage conversion contractor, Granny Homes transforms underutilized garage spaces into livable areas such as bedrooms, home offices, or recreational rooms.

Each project is approached individually, with the team working to understand the homeowner's specific goals before moving forward with design and construction.

The Granny Homes Process

Granny Homes follows a structured process from initial consultation through to project completion. The key stages include:

  1. Property Assessment – An evaluation of the property's potential for an ADU, taking into account zoning regulations, site characteristics, and the homeowner's goals.
  2. Custom Design – The design team works with clients to develop a layout that balances functionality, aesthetics, and space efficiency. Advanced design tools and 3D visualizations are used to help clients understand the proposed outcome before construction begins.
  3. Permitting – Granny Homes manages the permit process and coordinates with local authorities, helping to reduce delays and navigate regulatory requirements.
  4. Construction – The build phase is carried out with attention to quality and clear communication with the client throughout.
  5. Final Inspection and Handover – A thorough inspection is completed before the finished ADU is handed over to the homeowner.

As an accessory dwelling unit builder, Granny Homes places emphasis on keeping clients informed and involved at each stage of the project. The design consultation process allows homeowners to discuss their budget, preferred layout, and stylistic preferences before any work begins.

For homeowners in the Sacramento region considering an ADU — whether a granny flat, in-law suite, Casita, or garage conversion — Granny Homes offers a full-service approach from design through construction.

Services

Granny Homes performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment
  • 3D renderings & floor plans

Granny Homes Reviews

Mattress Adam

2021-10-12
"The website that is on Google maps for this place is not accurate depiction of what it is. The website shows that they are builders of tiny homes and modular homes. But when you get to the place they dont answer the phone and its really just a mobile home park."

George Gatt

2019-01-03
"Beautifully kept premises, nice modular living, quiet, and no homeless individuals snooping around."

Paul Colbert

2018-09-21

Raymond Garcia

2018-06-24

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Specifics

Eco-Friendly

Opening hours

Monday 10:00AM - 5:00PM
Tuesday 10:00AM - 5:00PM
Wednesday 10:00AM - 5:00PM
Thursday 10:00AM - 5:00PM
Friday 10:00AM - 5:00PM
Saturday -
Sunday -

Location

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