Horst Construction
ADUs & Guest Houses in Santa Barbara, CA
Add income or family space with an ADU or guest house: conversions and new builds, guest houses, pool houses and garage conversions, built to the same standard as the main home.
Who this is for
- Homeowners adding rental income
- Families creating space for relatives or guests
- Owners converting a garage or building new on their lot
What's included
- Detached and attached ADUs
- Garage and space conversions
- Guest houses and pool houses
- Full-finish construction and site coordination
Challenges we solve
ADU rules are confusing
We guide you through feasibility and requirements during pre-construction planning.
Guest houses that feel like an afterthought
We build them to the same finish standard as the main home.
Utility connections and site logistics
We plan utilities, access and staging up front so the ADU ties into the main property cleanly.
Related projects
All projects
How we approach it
Our process for adus & guest houses
ADUs hinge on feasibility and site planning early: we assess what's possible on your lot before committing to a design and budget.
01
Initial consultation
02
Site visit
03
Design & pre-construction
04
Budget development
05
Contract review & approval
06
Construction
07
Final walkthrough & handover
Frequently asked questions
Can you convert my garage into an ADU?
Often, yes; garage conversions are a common ADU path. We assess feasibility for your specific property.
Are ADUs a good investment?
Many owners build them for rental income or family space. We'll help you weigh the numbers honestly before you commit.
Do you handle permitting for ADUs?
We guide you through feasibility and requirements during pre-construction planning; exact permitting needs vary by property and jurisdiction.
Can an ADU be attached to my existing home?
Yes, we build both attached and detached ADUs, depending on your lot and goals.
2026 build slots are filling fast.
Book a consultation with our team and we'll map out realistic timing and budget for your project, no pressure, no obligation.