Casita ADU is a San Diego-based full-service ADU builder handling permitting, design, and construction. As a trusted accessory dwelling unit contractor, they manage every project phase, ensuring on-time, on-budget builds for California homeowners.
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B&A Construction Inc. is a licensed general contractor in Manteca, CA, with 35 years of experience. Services include ADU construction, garage conversions, kitchen & bathroom remodeling, and room additions across San Joaquin and Central Valley counties.
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TNT Design & Build specializes in ADUs, garage conversions & room additions in San Diego's North County. 15 years experience, in-house management, free architectural design, prices from $325/sqft with guaranteed budget & timeline.
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Youngren Construction builds attached & detached ADUs, including backyard cottages, granny flats & casitas. Ideal for in-law suites, rental income or extra living space. Expert ADU contractor managing projects from planning to completion.
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SDS Homes Construction is a Temecula, CA design-build contractor specializing in ADUs, granny flats, and Casitas. They offer turnkey services from design to permitting and construction, serving Temecula and Murrieta homeowners.
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Building an ADU in Riverside takes 8–16 months. JDB Builders guides homeowners through design (1–3 months), permitting (2–4 months), construction (4–8 months), and final inspections (1–2 months) for granny flats, garage conversions, and more.
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Kaminskiy Home Remodeling builds ADUs in San Diego, including granny flats, garage conversions, JADUs & basement units. Boost property value, earn rental income, or house family. Serving Poway, La Jolla, Encinitas & more.
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Musick Construction Inc. offers ADU construction services including new builds and conversions like garage and basement conversions. They handle permits, design, and finishes for granny flats, in-law suites, and rental units.
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Woollard Construction is a family run general contractor specializing in ADUs and bathroom remodels. Formed over 25 years ago in Temecula, California, we deliver professional building projects with care and precision in Temecula and Murrieta.
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Paramount Manufactured Sales in Riverside offers Skyline Homes-built ADUs for Southern California homeowners in LA, Orange, Riverside, San Bernardino & San Diego Counties. Models range from 479–849 sq ft. California law now allows detached ADUs up to 1,200 sq ft.
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Tate & Son, Inc. is a licensed ADU contractor in San Diego & Southern California. They offer garage conversions, in-law suites & detached ADUs. Pricing starts ~$70K. 5-year warranty. Free estimates available.
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US Modular Inc. is a trusted ADU builder in Riverside County, CA, with 35+ years of experience. They offer prefab ADUs, garage conversions & casitas starting at $150,000, completed in 6–9 months.
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Aura Design Build is a San Diego-based luxury renovation and ADU construction firm serving Southern California, including Newport Beach and Laguna Beach. With 15+ years of experience, they offer kitchen remodels, bathroom renovations, custom cabinetry, and full ADU builds.
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California ADUs are self-contained units on single-family lots, offering rental income, family housing, and no land purchase. Build up to 1,200 sq ft. Fassino Development guides homeowners through ADU construction, ensuring local code compliance.
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USModular Inc. is a Temecula, CA ADU builder specializing in modular, prefabricated construction. Units are up to 90% factory-built, completed in ~120 days, and comply with IRC and local codes. Services include feasibility studies, design, engineering, permitting, and installation.
read moreAnza is a small, unincorporated community located in Riverside County, nestled in the mountains of the Santa Rosa Plateau at an elevation of approximately 4,000 feet. Unlike incorporated cities, Anza falls under Riverside County jurisdiction, meaning ADU contractors must navigate county-level regulations rather than municipal codes. The rural character of Anza, combined with its unique terrain, well water systems, and septic infrastructure, creates a distinctive set of challenges and opportunities for homeowners looking to build an Accessory Dwelling Unit.
Since Anza is governed by Riverside County Land Use Services, ADU contractors must comply with the county's ADU ordinance, which aligns with California state law under AB 68, SB 9, and AB 2221. Key regulatory considerations include:
One of the most significant factors ADU contractors face in Anza is the lack of municipal water and sewer systems. Most properties rely on private wells and septic systems. Before breaking ground, contractors must assess whether the existing septic system has adequate capacity to support an additional dwelling unit. In many cases, a septic system expansion or upgrade is required, which must be approved by the Riverside County Department of Environmental Health. Similarly, well capacity evaluations may be necessary to ensure sufficient water supply for the new unit.
Hiring an experienced ADU contractor familiar with Anza and Riverside County is essential for a smooth project. Local contractors understand the specific soil conditions, fire hazard severity zones, and mountain climate considerations that affect construction methods and materials. Anza falls within a High or Very High Fire Hazard Severity Zone, which means ADU construction must comply with CAL FIRE building standards, including ember-resistant vents, fire-rated materials, and defensible space requirements.
Due to the rural location and infrastructure complexities, ADU projects in Anza may cost more and take longer than in urban areas. Homeowners should budget for:
Working with a licensed, insured ADU contractor who specializes in rural Riverside County projects ensures compliance, quality construction, and a smoother path to adding valuable living space on your Anza property.