Pool and patio addition with lounge seating in a renovated backyard

Horst Construction

Home Additions in Santa Barbara, CA

More space, done right: second-story additions, room additions and the structural work that makes them possible, integrated seamlessly into your existing home.

Who this is for

  • Owners who love their location but have outgrown their home
  • Families adding bedrooms, suites or living space
  • Homeowners weighing an addition against a move

What's included

  • Second-story and single-level additions
  • Structural engineering coordination
  • Roofline, facade and interior integration with the existing home
  • Full-finish construction to match or elevate your home
Family room with a gray sofa, armchair and built-in shelving

Challenges we solve

Bright white kitchen with a light wood island, woven bar stools, pendant lighting and professional stainless range

Additions that look bolted-on

We design the addition to read as part of the original home, inside and out.

Living through construction

Clear sequencing and communication so you know what's happening and when.

Structural surprises mid-build

Engineering is coordinated during pre-construction so the structure is resolved before we start.

Rear yard with turf and hedging

Related projects

All projects

How we approach it

Our process for home additions

Additions lean heavily on pre-construction planning and structural coordination, so the new space integrates cleanly with what's already there.

  1. 01

    Initial consultation

  2. 02

    Site visit

  3. 03

    Design & pre-construction

  4. 04

    Budget development

  5. 05

    Contract review & approval

  6. 06

    Construction

  7. 07

    Final walkthrough & handover

See our full process →

Frequently asked questions

Can you add a second story to my home?

In many cases, yes; it depends on your existing structure and local requirements, which we assess during pre-construction planning.

Will the addition match my existing home?

That's the goal. We detail the addition so rooflines, facades and interiors integrate rather than clash.

Will I need to move out during construction?

It depends on the addition's scope and how it connects to your existing home; we'll walk through what to expect for your project during the site visit.

Is Horst Construction licensed and insured for structural work?

Yes, we're fully licensed and insured in California, License #1124176, with structural engineering coordinated as part of every addition.

Bright living room with a sectional sofa and a lit brick fireplace

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.

Contact Us