Detached new build ADUs, attached ADUs, garage conversions, and junior ADUs designed and built in house.
Get a free in home consultation in Valencia. Call 310-596-5000 or use the form below.
ADUs in Valencia are state conforming via Santa Clarita, but HOA architectural review is required on top, which is the most consequential factor on a Valencia ADU project. Paradigm Builders takes the HOA submittal seriously. Permits run through the City of Santa Clarita Building and Safety Permit Center with online intake at santaclarita.gov, under SCMC Title 17. Architectural styles in Valencia include Mediterranean, Spanish Colonial Revival, Tuscan, traditional, and contemporary, and master association CC&Rs cover color, material, roof form, and landscape. Detached ADUs up to 1,200 square feet are allowed under city rules with HOA approval on top. Engineered pad construction means new ADU foundations have to tie into the existing pad with respect for drainage at construction joints. Master association rules on visible mechanical equipment affect ADU HVAC and venting placement. Garage conversions on existing slabs can be feasible when the slab is sound and when the HOA accepts the proposed exterior treatment. Paradigm Builders, California license 1100775, manages the full coordination. The office is at 1800 Century Park East Suite 600, Los Angeles, California 90067, with a direct line at 310 596 5000.
ADU & Garage Conversion Scope in Valencia
- Detached new build ADUs (up to 1,200 sf state default, taller and larger near transit)
- Garage conversion ADUs (existing footprint, ministerial approval pathway)
- Attached ADUs (sharing one wall with the main house)
- Junior ADUs (up to 500 sf inside the main house)
- Site planning, utility separation, and meter coordination
- Foundation and grading, especially for hillside ADU sites
- Title 24 energy compliance, low rise multifamily energy code
- Solar PV (required on most new construction ADUs in California)
Our ADU & Garage Conversion Process
Every Valencia ADU or garage conversion runs through the same end to end process. Design, permits, and construction under one roof.
We walk the Valencia lot to confirm setbacks, lot coverage remaining, slope, sewer capacity, electrical service capacity, and any easement constraints. Some lots can take a full 1,200 sf detached unit; some can only take a JADU.
Floor plan, elevations, and 3D renderings. Roof type, window placement, exterior finish, kitchen layout, and bathroom location are all decided before plans are submitted.
Title 24 calcs, low rise multifamily energy code, solar PV sizing, ventilation, and insulation specs are run before permit submittal. Avoids most corrections from plan check.
Line by line proposal covering site work, foundation, framing, MEP, finishes, solar, and utility tie in. We list which fees are city pass through (school impact, sewer cap charge) and which are construction.
City of Santa Clarita Building and Safety ADU submittal. State conforming via city.
Site clearance, foundation, framing, MEP, exterior dry in, interior finish, fixtures, final inspection. Most ADU builds run on a 4 to 7 month construction window.
Final inspections, panel upgrade if required, meter separation if you chose that path, and certificate of occupancy.
What a ADU & Garage Project Looks Like in Valencia
Valencia ADU work is uniquely shaped by HOA architectural review and the engineered subdivision context. CC&Rs constrain ADU exterior color, material, roof form, and landscape. HOA review timelines have to be coordinated with city plan check. Engineered pad construction influences foundation design for detached new construction ADUs. Master association rules on visible mechanical equipment affect ADU equipment placement. Paradigm Builders manages the HOA submittal, the city plan check, and the construction in a single process.
ADU & Garage Conversion Permits in Valencia
ADU work in Valencia follows California state ministerial approval rules with city specific layers on top. Here is the path your project follows.
Where the permits go. ADU submittals in Valencia are processed by City of Santa Clarita Building and Safety under California state ministerial timelines.
ADU and accessory unit rules. State conforming via city. HOA architectural review on top.
Code specifics. Master association CC&Rs include extensive design rules on color, material, roof form, and landscape. ADU plan check via city building department but HOA review required first. Paseo trail system shapes lot orientation.
ADU & Garage Conversion Cost in Valencia
ADU and garage conversion pricing in Valencia typically begins in the high five figures for a garage conversion on a sound slab with limited exterior change and HOA approval in process. Detached new construction ADUs with full HOA architectural review, engineered pad foundation tie ins, and master association coordination generally start in the low to mid six figures. Paradigm Builders provides a written scope after walking the parcel and confirming HOA review requirements.
Common Questions: ADU & Garage Conversion in Valencia
Can I build an ADU on my Valencia lot?
Most likely yes. California state law allows at least one ADU plus one JADU on virtually every single family lot. Valencia layers local rules on top. We walk the lot before any design work to confirm setbacks, lot coverage, and any overlay constraints.
How long does an ADU take to build in Valencia?
Permit timeline runs 60 to 120 days under California state ministerial approval, plus a 4 to 7 month construction window. From signed design contract to final inspection most Valencia ADUs run 8 to 14 months total.
Will my property taxes go up?
Yes, but only on the assessed value of the new ADU. The existing house keeps its current assessment under Prop 13. The ADU is valued at construction cost basis.
Do I need to live in the main house if I rent the ADU?
California removed the owner occupancy requirement for most ADUs through Dec 31, 2024 then reinstated it with exceptions starting 2025. Junior ADUs still require owner occupancy in the main house or the JADU. We confirm current rules at the feasibility walk.
Can I convert my detached garage instead of building new?
Yes. Garage conversions to ADUs are a ministerial process under state law and are usually the lowest cost ADU path. The slab, walls, and roof are existing, which cuts site work and framing scope significantly.
Do you handle the solar requirement?
Yes. New construction ADUs over 80 percent new floor area trigger the solar mandate. We size and install the PV system as part of the build. Garage conversions are usually exempt.
Nearby Cities We Serve
Paradigm Builders works throughout the greater Los Angeles area. ADU & Garage Conversion pages for nearby cities:
Ready to Build an ADU in Valencia?
Send your ADU project details below. We confirm site feasibility, walk the lot, and follow up with a unit plan, scope estimate, and ADU permit timeline for your Valencia property.
[contact form-7 id=”343″ title=”Footer Form”]
Or call 310-596-5000
Paradigm Builders
1800 Century Park East Suite 600
Los Angeles, CA 90067
Phone: 310-596-5000
Email: info@paradigmbuilders.com
California Contractors State License Board: License 1100775
Serving Valencia and the greater Los Angeles metro area.
