Accessory Dwelling Unit (ADU) Builder in Temecula, CA
SDS Homes Construction designs and builds ADU homes in Temecula, CA, from backyard casitas and garage conversions to attached in-law suites. As a family-owned, licensed ADU builder, we manage everything from feasibility and design through city permits, construction, and final inspection. That means you get one accountable team from start to finish.
About ADU Homes Construction in Temecula, CA
As land costs rise across Southern California, ADU homes in Temecula are becoming an increasingly practical solution for homeowners looking to maximize their property investment. An ADU is an attached or detached residential dwelling unit that provides complete independent living facilities on a lot with a proposed or existing primary residence—giving your current home the flexibility it needs as your priorities change over time.
Whether used as an in-law suite, rental income stream, or flexible living space, ADUs address both personal needs and California’s ongoing housing shortage. They provide homeowners with a potential income opportunity while creating more affordable housing options in the region.
SDS Homes Builds ADUs
SDS Homes Construction specializes in building backyard casitas, ADUs, and granny flats. We’re also experts in new home construction and all types of home remodeling, including whole-house remodels and any additions you might need.
SDS Homes Construction is a design-build general contractor that specializes in accessory dwelling units. By building a backyard casita or ADU, Temecula Valley homeowners can create housing for family members, friends, students, aging parents, in-home caregivers, people with disabilities, and others.
The ADU Turnkey Solution
Multigenerational living continues to grow across Southern California. We design ADUs that make this lifestyle more enjoyable, including private, apartment-style in-law units attached to the main home. Residents can enjoy time together in shared spaces while still having privacy when they want it.
We work with homeowners and homebuyers to design and build accessory dwelling units that are private, legal, and self-sufficient. Whether you live in Temecula or nearby Murrieta or Wildomar, CA, we provide end-to-end planning and construction for your ADU. We stay current on state and local rules that make it easier than ever to add a new dwelling unit to your property.
Following ADU Laws/Permits
Recent legislative changes have made it easier (and cheaper) for homeowners to build in-law suites on their property. Additional pushes for more liberal granny flat ordinances in Southern California have opened up new possibilities for homeowners to pursue this construction opportunity.
SDS Homes offers a turnkey solution for any homeowner to take advantage of the new California laws that offer this opportunity for Accessory dwelling units. Our SDS Home Construction team of professionals will identify your goals, analyze your financial information, and develop a custom plan to build your Backyard Casita.
Temecula ADU Size Limits & Zoning Basics
Temecula follows California ADU law through its Municipal Code Chapter 17.23. Here are the key standards for single-family properties:
- How many units: Most single-family lots can have one ADU plus one JADU.
- Detached ADU size: Up to 1,200 square feet.
- Attached ADU size: Up to 50% of the main home’s floor area. The city must still allow at least 850 square feet, or 1,000 square feet for a unit with more than one bedroom.
- JADU size: 150–500 square feet, located entirely within the existing or proposed home.
- Setbacks: 4 feet from side and rear property lines. Conversions of legally built existing structures need no additional setbacks.
- Height: 16 feet for most detached ADUs. Attached ADUs can reach 25 feet or the main home’s height limit, whichever is less.
- Separation: Detached ADUs generally need 6 feet of separation from the main home.
- Parking: One space is typically required, but exemptions apply. These include ADUs within a half-mile of public transit and ADUs created inside existing structures, including garage conversions.
- Lot size: There’s no minimum lot size. Your property needs an existing or proposed primary home and adequate water and sewer service.
Every lot is different, so we’ll confirm exactly what your property allows before design begins.
FEATURED CONSTRUCTION PROJECT
Following ADU Laws & Permits in Temecula
We handle the City of Temecula’s ADU permit process from start to finish. There are three main paths, and we’ll identify the fastest one for your project.
Building Permit Only: Smaller projects can go straight to the Building & Safety Division. This includes a detached ADU up to 800 square feet with 4-foot setbacks, or an ADU or JADU created within existing space.
Planning Application: Larger or custom ADUs first go through a Planning Division application, then to Building & Safety. By state law, the city must approve or deny a complete ADU application within 60 days.
Permit Ready ADUs: Temecula offers free, pre-designed ADU plans ranging from a 499-square-foot studio to a 1,194-square-foot three-bedroom unit. Permit fees still apply, but pre-approved plans can simplify design and review.
Along the way, we coordinate:
- “Will serve” letters from your water and sewer providers, such as Rancho California Water District or Eastern Municipal Water District
- HOA architectural review, if your neighborhood has one
- Septic approval from Riverside County Environmental Health for properties not on sewer
- Your city-required covenant confirming the ADU won’t be sold separately or used as a short-term rental.
ADUs under 750 square feet are also exempt from impact fees, which can meaningfully reduce your total cost.
Timeline: Most ADU projects take several months from design through final inspection. Design and permitting often take 2–4 months, depending on the path. Construction typically runs 3–6 months, depending on the ADU type and size.
SDS Homes offers a turnkey solution for any homeowner ready to take advantage of California’s ADU laws. Our team will identify your goals, review your budget and property, and develop a custom plan to build your backyard casita.
Building ADU Homes Across the Temecula Valley
We build ADUs throughout Temecula, and each neighborhood comes with its own lot sizes and HOA considerations:
- Established communities like Redhawk, Paloma del Sol, Harveston, and Wolf Creek
- Hillside properties in Crowne Hill and Morgan Hill
- Larger parcels toward Temecula Valley Wine Country
Knowing the local conditions saves time and money. Longer utility runs on big lots, septic systems on rural parcels, and HOA design rules in planned communities can all affect cost. So can the difference between the City of Temecula and unincorporated Riverside County rules exist, since some wine country properties sit outside city limits?
Our primary service area covers Temecula, Murrieta, and Wildomar, and we serve communities throughout Southwest Riverside County. Based on Winchester Road in Temecula, we’re close enough to walk your property quickly and keep your project moving.
Frequently Asked Questions
We build detached ADUs, attached ADUs, garage conversions, and junior ADUs (JADUs). Most single-family lots in Temecula can have one ADU plus one JADU. We’ll recommend the best type based on your lot layout, budget, and goals.
The permit path matters most. “Building permit only” projects move faster, while larger custom ADUs need planning review first. The city must act on a complete application within 60 days. Utility will-serve letters, HOA review, septic approvals, and site work can also affect timing. We manage each step to keep your project on schedule.
Temecula requires attached ADUs and most custom detached ADUs to match the materials and colors of your main home. We plan exterior finishes like stucco, roofing, and trim for a seamless look. Inside, you can choose cabinets, flooring, tile, countertops, and fixtures to fit your style and budget.
Every ADU we build meets California’s Title 24 energy standards. For Temecula’s hot summers, we focus on quality insulation, dual-pane low-E windows, efficient ductless heat pumps, and LED lighting. New detached ADUs generally also require solar panels under the California Energy Code.
An ADU can generate steady long-term rental income, house family members close by, and increase your property value. Temecula ADUs under 750 square feet also skip impact fees. SDS Homes helps you design for both everyday function and long-term return.
Costs depend on type, size, site conditions, and finishes. Typical Southern California ranges:
- JADUs: $50,000–$100,000
- Garage conversions: $100,000–$175,000
- Attached ADUs: $175,000–$300,000
- Detached ADUs: $200,000–$400,000 or more
Permit and utility fees are additional. We’ll provide a detailed, itemized estimate after reviewing your property.
Detached ADUs offer the most privacy and usually the strongest rental appeal but cost more to build. Attached ADUs and garage conversions often cost less because they share walls and utilities with your home. See our attached vs. detached comparison above, or schedule a site visit for a personalized recommendation.
