ADU and Casita Construction Services by Calpacific Contracting
Calpacific Contracting is an ADU contractor and casita builder serving Canyon Lake, CA, along with Riverside, Orange, San Bernardino, and Los Angeles Counties. The company brings over 80 years of combined construction experience to the design and building of accessory dwelling units and guest homes — projects aimed at increasing property value, generating rental income, and expanding livable space without the expense of a full home addition.
Whether a homeowner is planning a backyard cottage, a garage conversion, a detached ADU, or a Casita, Calpacific Contracting handles the process from initial concept through to completion, managing permits, plans, and inspections along the way.
What Calpacific Contracting Builds
Calpacific Contracting offers a range of ADU construction services, covering all major project types. Their work includes:
- Detached ADUs (backyard cottages)
- Garage conversions
- Attached ADUs
- Casitas and guest houses
- Junior ADUs (JADUs)
- Studio, one-bedroom, and two-bedroom floor plans
- Foundations, framing, and roofing
- Electrical, plumbing, and HVAC
- Kitchens, bathrooms, and interior finishes
- Permits, plans, and inspections
Each accessory dwelling unit is built with energy efficiency and long-term durability in mind. By managing every phase of the project, Calpacific Contracting removes the need for homeowners to coordinate multiple contractors or vendors separately.
ADUs and casitas are designed to serve a variety of purposes — generating rental income, supporting multigenerational living arrangements, or simply adding flexible living space to a property. Calpacific Contracting builds units that meet California state and local ADU regulations while delivering modern comfort and practical functionality.
Experience and Process
ADU construction in California involves navigating specific regulatory requirements, zoning rules, and inspection standards. Calpacific Contracting approaches each project with feasibility assessments, designs intended to pass inspection on the first submission, and efficient timelines that avoid unnecessary delays.
Their process follows a structured sequence:
- Site assessment and feasibility review
- Design and layout planning
- Zoning and code compliance
- Full construction and trade coordination
- Final inspections and project closeout
This approach gives homeowners a single point of accountability throughout the project rather than managing multiple parties independently.
Calpacific Contracting serves communities across Southern California, including Canyon Lake, and throughout Riverside County, Orange County, San Bernardino County, and Los Angeles County. From granny flat builders in Canyon Lake to garage conversion contractors in Orange County and detached ADU builders in Los Angeles, they apply the same construction standards across all project locations.
For homeowners looking to make use of underutilized space on their property — whether through a backyard cottage, an in-law suite, or a JADU — Calpacific Contracting offers a structured, experienced approach to getting the project built correctly and in compliance with California requirements.