ADU Design & Permitting Near Me in Santa Clarita - One Fixed Price, Permits Handled

ADU Design & Permitting Near You in Santa Clarita, CA

If you’re searching for our ADU Design & Permitting services near you in the Santa Clarita Valley, Ellery ADU Studio works directly out of the area and covers Santa Clarita along with Stevenson Ranch, Castaic, Sylmar, Granada Hills, Porter Ranch, San Fernando, and Mission Hills. Every project starts with a written price before any work begins – no estimates that shift after the first site visit, no designer-versus-builder finger-pointing down the road. Call (747) 294-4817 and a live person will pick up.

Nadia Ellery founded the studio in 2015, the same year California’s ADU statutes began the series of changes that made accessory dwelling units a realistic financial asset rather than a regulatory headache. Since then, Ellery ADU Studio has designed, permitted, and built more than 900 ADUs across the region, every one of them delivered under a single contract at a written price that was locked before a drawing line was made.

The studio’s approach is straightforward: ADU Design & Permitting in Santa Clarita is treated as the core product, not a preliminary step someone else handles before construction starts. Drawings, permit set, and build are one contract, one price, one point of accountability.

Fast, Local ADU Design & Permitting

Most homeowners in Santa Clarita who contact us have already spent several weeks collecting bids from separate designers and contractors. By the time they call, they’ve received at least one estimate that changed between the phone call and the written proposal. That gap is what Ellery’s single-contract model closes.

When you call (747) 294-4817, a live person answers – not a voicemail queue, not a callback window. We schedule a site visit at a time that works for you, assess your lot’s actual conditions (setbacks, existing utilities, slope, any HOA overlay that applies in your specific Santa Clarita neighborhood), and present a written price before any design work starts. That price is governed by Haven Standard Clause 1: it doesn’t move because of scope items we should have caught at the initial visit.

For homeowners in the closer-in neighborhoods of Newhall, Saugus, and Valencia, we can typically schedule a site assessment within a few business days. For Castaic, Stevenson Ranch, and the communities along the 14 corridor, the same timeline applies. The Permit Application process at Santa Clarita’s Development Services counter typically runs four to eight weeks for a straightforward ADU submittal; our permit set is built specifically to that checklist, which reduces the back-and-forth that eats most of that time.

Areas We Cover

Ellery ADU Studio serves homeowners across the broader Santa Clarita Valley and the neighborhoods that feed into it from the south and west. Below is the current service footprint. If your address isn’t listed, call us anyway – coverage extends further than the short list.

• Santa Clarita – including Valencia, Saugus, Newhall, and Canyon Country
• Stevenson Ranch – a common fit for garage conversion ADUs given the lot configurations in that master-planned community
• Castaic – larger lot sizes here often open up detached ADU options that smaller in-fill lots can’t support
• Sylmar – we regularly see junior ADU conversions in the older ranch-style homes on larger parcels here
• San Fernando – higher lot density, so interior conversions and garage ADUs are the most common fit
• Granada Hills – post-war tract lots that frequently support a detached ADU at the rear without a setback variance
• Porter Ranch – newer construction with HOA layers; we document the HOA requirements before the permit set is drawn
• Mission Hills – multi-generational households make up a significant share of our clients here; a junior ADU or attached conversion is often the right answer

The Santa Clarita Valley sits in a high-fire hazard severity zone for portions of the city – particularly toward the Placerita Canyon and Sand Canyon corridors. That designation affects material specifications, defensible space requirements, and occasionally the siting of a new detached ADU. Ellery’s permit sets account for those overlays before submittal, not after a plan check correction notice arrives.

What an Ellery Permit Set Actually Includes

The permit set is the product. That’s worth explaining in concrete terms, because many homeowners who come to us have previously received a “design” that turned out to be a floor plan sketch and a reference to “your contractor will handle permits.”

An Ellery permit set for a Santa Clarita ADU project includes architectural drawings to the city’s current submittal standard, Title 24 energy compliance documentation (California’s building energy code, which became notably stricter for ADUs after 2022), structural engineering with a wet stamp where the city requires it, any geotechnical reference the site conditions require, and the complete plan check response package. When the city sends a correction letter – and they often do, even on clean submittals – Ellery handles the response under the same contract. That’s not a surprise line item; it’s in the scope from the start.

For prefab and modular paths, Ellery specifies and coordinates systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie within the same single contract. A prefab ADU still requires a site-specific permit set in Santa Clarita; the factory drawings are the starting point, not the finish line.

How Much Does ADU Design and Permitting Cost Near Santa Clarita?

Every project Ellery quotes is quoted with a written price before any work begins – per Haven Standard Clause 1 – so the ranges below are starting-point context, not a substitute for a site-specific number.

Santa Clarita’s city permit fees for an ADU typically fall in the $8,000 to $15,000 range depending on square footage and the number of plan check rounds. School fees, which are calculated per square foot of new living area, add another layer. Those line items are documented in your written quote before you sign anything.

If you already have a written estimate from another firm, Ellery’s Free Second Opinion service will review it line by line and tell you what’s in it, what’s missing, and where the numbers look off. Call (747) 294-4817 to schedule that review – no charge, no obligation.

The Haven Standard: What It Means in Practice

Nadia Ellery built the studio around a documented operating standard because she saw, early on, that the disputes which killed ADU projects almost always came from the same place: a price that changed, a scope item no one owned, or a finished product that didn’t match the drawings. The Haven Standard is the written answer to each of those failure points.

• Clause 1 – Written Price Before Work Starts: the project price is documented and signed before a single drawing is produced. It doesn’t move because of items Ellery should have identified at the site visit.
• Documented Photo Record: every site visit and construction milestone is documented photographically. You receive the record, not a summary of what the crew thought they saw.
• 365-Day Done Right Promise: if the finished ADU is not built to the permitted drawings, Ellery makes it right. That commitment is in writing before the project starts – not offered after a dispute begins.

These aren’t marketing positions. They’re clauses in the contract you sign. If the language isn’t in the agreement, it doesn’t count – a rule that applies to what Ellery promises and to what any other firm tells you verbally.

FAQs: ADU Design & Permitting Near Santa Clarita

How fast can you start on my ADU project in Santa Clarita?

For most Santa Clarita homeowners, we can schedule an initial site assessment within a few business days of your first call. After that visit, your written price is typically delivered within five to seven business days. Design and permit set preparation runs eight to fourteen weeks depending on project complexity; Santa Clarita’s plan check adds four to eight weeks on top of that. The full timeline from first call to permit-in-hand usually lands between five and seven months for a straightforward project. Call (747) 294-4817 and a live person will give you a more specific window based on current workload.

Do you serve my area if I’m not in Santa Clarita proper?

Yes. Ellery ADU Studio covers Stevenson Ranch, Castaic, Sylmar, San Fernando, Granada Hills, Porter Ranch, and Mission Hills in addition to the Santa Clarita city limits. If your address is in a neighboring community not on that list, call (747) 294-4817 – our service boundary is broader than the short list on this page. We’ll tell you directly whether your address falls within the current territory rather than have you find out after a site visit is scheduled.

What does ADU design and permitting cost near Santa Clarita?

Design and permitting alone, without construction, typically runs $18,000 to $38,000 for a Santa Clarita ADU project. All-in design-build pricing starts around $80,000 for a junior ADU or interior conversion and runs to $320,000 or more for a larger new detached unit on a challenging lot. Every project Ellery quotes comes with a written price before any work starts – per Haven Standard Clause 1 – so the number you receive is the number you can plan around. If you already have a written estimate from another firm, request a Free Second Opinion at (747) 294-4817; we’ll review it at no charge.

Can I reach someone after hours if I have questions?

A live person answers (747) 294-4817 around the clock – no voicemail queue, no “we’ll get back to you the next business day.” ADU decisions are often made in the evening after homeowners have had time to review drawings or compare estimates; it didn’t make sense to us to be unreachable during those hours. That said, after-hours calls are for questions and scheduling, not emergency construction situations – ADU design is rarely a same-night emergency, and we’d rather give you accurate information the next morning than rush an answer at midnight.

Why the “Near Me” Part Actually Matters for ADU Permitting

A Santa Clarita homeowner searching “ADU design and permitting near me” is usually not just looking for proximity on a map. They want someone who already knows that the city’s Development Services counter has specific submittal requirements for projects in the Very High Fire Hazard Severity Zone, that some Canyon Country parcels carry slope conditions that add a geotechnical report to the permit set, and that the school fee calculation in the William S. Hart Union High School District adds a line item that out-of-area designers sometimes miss entirely.

That local knowledge is not something you acquire from a website; it comes from having submitted permit sets to the same counter, received correction letters from the same plan checkers, and walked the same neighborhoods where the HOA CC&Rs layer on top of city zoning. Ellery has operated in this valley since 2015. The permit checklist for a Valencia lot is not the same as the checklist for a Stevenson Ranch lot, and both are different from what applies to a Sylmar parcel that falls under Los Angeles city jurisdiction rather than Santa Clarita’s.

That jurisdictional point is worth naming plainly: Sylmar, San Fernando, Granada Hills, Porter Ranch, and Mission Hills are within the City of Los Angeles, not the City of Santa Clarita. The permit process, the fees, and the applicable zoning codes are different. Ellery works in both jurisdictions, and the written scope document for your project will identify which authority has control over your parcel before any drawing starts. Visit our home page for a full overview of the services and service area.

Key Takeaways

• Ellery ADU Studio covers Santa Clarita and surrounding communities including Stevenson Ranch, Castaic, Sylmar, Granada Hills, Porter Ranch, San Fernando, and Mission Hills.
• Every project starts with a written price before any work begins – Haven Standard Clause 1 is not optional on any Ellery project.
• Design and permitting alone runs $18,000 to $38,000; all-in design-build ranges from roughly $80,000 for an interior conversion to $320,000 or more for a new detached ADU.
• Santa Clarita’s permit timeline adds four to eight weeks for plan check; Ellery’s permit sets are built to that checklist to reduce correction rounds.
• The 365-Day Done Right Promise is in the contract before the project starts – in writing, not in conversation.
• Sylmar, Granada Hills, Porter Ranch, San Fernando, and Mission Hills fall under Los Angeles city jurisdiction; the permit process there differs from Santa Clarita’s, and Ellery operates in both.
• A Free Second Opinion is available on any written estimate you’ve already received – call (747) 294-4817 to schedule it.

Start With a Written Price

If you’re within range of Santa Clarita and want to know what an ADU would actually cost on your specific lot, the next step is a site visit and a written quote. Call (747) 294-4817 – a live person picks up, we’ll schedule the visit, and you’ll have a documented price in hand before any design work begins. That’s how every Ellery project starts, and it’s the only way we operate.

Written by Nadia Ellery, Owner at Ellery ADU Studio Santa Clarita, serving Santa Clarita and nearby areas since 2015.