Pre-approved in Hillsborough, San Mateo County
Pre-Approved ADU Builder in Hillsborough
ADORE Homes is a licensed design-build firm with ADU plans in Hillsborough's pre-approved program. We handle feasibility, design, engineering, permits and construction, with manufactured and Signature site-built models starting from $257,900.
CSLB #1145340 · HCD #DL1573381 · Estimates are non-binding and subject to a site visit.
ADORE models you can build in Hillsborough
A sample of our range, from studios to multi-bedroom homes. Your feasibility study confirms which plans fit your Hillsborough lot.
ADORE Crema 378 C
1 bed · 1 bath · 378 sq ft · from $257,900
ADORE Crema 493
1 bed · 1 bath · 493 sq ft · from $287,900
ADORE Crema 667
2 bed · 2 bath · 667 sq ft · from $293,900
ADORE Crema 747 L
2 bed · 1 bath · 747 sq ft · from $302,900
ADORE Crema 728 L
2 bed · 2 bath · 728 sq ft · from $317,900
ADORE Horizon 600 L
1 bed · 1 bath · 600 sq ft · from $324,900
Why build with ADORE in Hillsborough
- Plans already on file in Hillsborough's pre-approved program
- Manufactured offsite or Signature site-built - matched to your lot
- One team from feasibility to final inspection
- Itemized pricing including soft costs and city fees
Our process
- Free feasibility study for your Hillsborough address
- Choose a pre-approved model or a custom Signature design
- Design, engineering and Title 24
- Permitting with Hillsborough
- Site work, foundation and utilities
- Build, inspections and handover
Hillsborough ADU questions
Is ADORE Homes a pre-approved ADU builder in Hillsborough?
Yes. ADORE Homes has ADU plans on file in Hillsborough's pre-approved ADU program, which can shorten plan check compared with a fully custom submittal. Exact timelines depend on your lot and the city's current review queue.
How much does an ADU cost in Hillsborough?
ADORE models start from $257,900. Most projects in Hillsborough land in the $260,000 to $450,000+ range all-in, depending on size, site work, utilities and finishes. All estimates are non-binding and subject to a site visit and feasibility study.
How long does it take to build an ADU in Hillsborough?
Plan on roughly 10 to 16 months from first meeting to move-in: 1-2 months of design and feasibility, permitting (shorter with pre-approved plans), then 4-8 months of site work and construction.
Does ADORE handle permits in Hillsborough?
Yes. We manage the full permit package in Hillsborough - drawings, engineering, Title 24, submittal, plan-check responses and inspections - through final sign-off.