Accessory Dwelling Units (ADUs)

Accessory Dwelling Unit (ADU) Construction in Fremont and the Bay Area

Adding an ADU is one of the smartest ways to expand your home’s value, flexibility, and functionality.

Detached guest house, garage conversion, or in-law unit — Curt’s Construction Company makes the process clear and doable from concept to completion.
We’ve been designing and building accessory dwelling units with a focus on honest guidance, quality craftsmanship, and completing one project at a time.

Accessory Dwelling Unit added to home

Types of ADUs We Build

We specialize in custom ADUs and JADUs construction for all kinds of properties and projects.

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Detached ADUs

Full standalone structures, ideal for rental income, private living quarters, or multigenerational homes.

Junior ADUs (JADUs)

Converting existing areas like bedrooms, garages, attics, or other underused interior space into a legal second unit with its own entrance.

Backyard Guest Homes & In-Law Units

Designed for comfort, privacy, and long-term use by family, guests, or tenants.

Custom Builds for Small Spaces

Every property is different. We design to fit your space, goals, and budget.

Accessory Dwelling Unit home

Why Homeowners Choose Curt’s Construction Company

  • Over 45+ years of hands-on construction experience
  • Based in Fremont and serving the entire Bay Area
  • One project at a time, with personal oversight
  • Realistic timelines and cost planning
  • Family-owned and fully involved
  • Open communication

Our focus is to educate clients, so they can make informed decisions for themselves.

Start Your ADU Project With Curt’s Construction Company

We build ADU and JAUD’s throughout Fremont, San Jose, and Surrounding Cities

Tell us what you need — income space, in-law unit, guest house, or something custom. We’ll tell you what’s possible and help make it happen. Not sure if your ADU fits your property? We’ll help you find out.

From Design to Permits to Final Build

We handle every step of the ADU process in-house:

  • Smart, budget-conscious design based on your layout
  • Full architectural drawings and planning
  • Permit navigation with your local city
  • Project scheduling and trade coordination
  • Quality construction with no unnecessary delays

We know how to get ADU and JADU’s approved, built, and ready to use — even in tight spaces or challenging lots.

Accessory Dwelling Unit being added to home