Plan record

Genesis D400

Genesis D400 is a pre-approved manufactured ADU plan from Statewide Homes. The public source lists it as 559 sq ft, 1 bed, and 1 bath. It originated in the San Mateo, San Mateo County, California, USA program. This directory currently shows acceptance in San Mateo, San Mateo County, California, USA. Source context comes from City of San Mateo / Community Planning Collaborative, last checked Jul 28, 2026. Use the linked provider, location, and source records to verify current acceptance before relying on the plan.

Source-backed summary

What public sources list

Genesis D400 is a pre-approved manufactured ADU plan from Statewide Homes. The public source lists it as 559 sq ft, 1 bed, and 1 bath. It originated in the San Mateo, San Mateo County, California, USA program. This directory currently shows acceptance in San Mateo, San Mateo County, California, USA. Source context comes from City of San Mateo / Community Planning Collaborative, last checked Jul 28, 2026. Use the linked provider, location, and source records to verify current acceptance before relying on the plan.

Provider record
Statewide Homes

Details

Plan facts

Plan identifier
Not listed in source
Provider
Statewide Homes
Accepted locations
Status
Pre-approved
Size
559 sq ft
Bedrooms
1 bed
Bathrooms
1 bath
ADU type
Manufactured
Construction type
Manufactured
Plan fee
Not listed in source
Estimated cost
$84,461 to $140,000
Last checked
Jul 28, 2026

Plan notes

Notes

Foundation notes
The City guide requires omitted site-specific foundation details and HUD or HUD-approved Production Inspection Primary Inspection Agency evidence; otherwise a California-licensed engineer must prepare the foundation design.
Utility notes
Site-specific utility routing and connection review remains required. New detached ADUs may require separate connections and proportional connection or capacity charges under current City code.
Energy notes
The City guide requires applicable Title 24 energy documentation and CALGreen information during plan pre-approval; project-specific compliance remains subject to City review.
Accessibility notes
Not listed in source
Permit fee notes
The adopted 2026–27 City schedule lists $1,455.43 for eligible manufactured, prefab, or pre-approved ADU review. Other site, utility, impact, professional, and construction charges may apply.
Cost notes
Provider-submitted City-gallery range. Home-only pricing starts near $84,000–$107,000; the upper estimate adds typical options, setup, delivery, foundation, close-up, steps, and landings. Permits, mitigation fees, and utilities are excluded.
Additional notes
City gallery catalog record a0APk000008hiE6MAI. The City-specific gallery lists the design as Federal Government (HUD)-certified, but it is not in the gallery's locally confirmed-plan-ID list. The controlled approval_status 'preapproved' records the external agency certification plus City listing; it is not parcel or building-permit approval. Phase 2 City site-specific review remains required, and the streamlined path does not allow design modifications. The direct document URL is a floor-plan image, not a complete permit-ready plan set. Provider-submitted gallery features: In-unit washer/dryer;WUI (wildland urban interface) compliant;Turnkey project. Repeated whitespace in the displayed plan name was normalized without changing its words. No explicit public statement established that the plan license is free; plan_fee remains NULL.

Source and evidence

Genesis D400

Official city source
Publisher
City of San Mateo / Community Planning Collaborative
Source type
Plan catalog
Reliability
Official city/county/state government source (5/5)
Last checked
Jul 28, 2026
Accessed
Jul 28, 2026

Accepted-in locations

Accepted Locations

1 accepted location

Source
Genesis D400
Last checked
Jul 28, 2026
Additional notes
City gallery catalog record a0APk000008hiE6MAI. The City-specific gallery lists the design as Federal Government (HUD)-certified, but it is not in the gallery's locally confirmed-plan-ID list. The controlled approval_status 'preapproved' records the external agency certification plus City listing; it is not parcel or building-permit approval. Phase 2 City site-specific review remains required, and the streamlined path does not allow design modifications. The direct document URL is a floor-plan image, not a complete permit-ready plan set. Provider-submitted gallery features: In-unit washer/dryer;WUI (wildland urban interface) compliant;Turnkey project. Repeated whitespace in the displayed plan name was normalized without changing its words. No explicit public statement established that the plan license is free; plan_fee remains NULL.