ADU Design & Permitting Near You in Upland, CA
If you’re searching for our ADU Design & Permitting services near you, Ellery ADU Studio is based in Upland and covers the surrounding Inland Empire communities. We handle every step under one written contract – drawings, permit set, and construction – at a price you see before any work begins, per Haven Standard Clause 1. Call (840) 212-3065 to speak with a live person right now; no voicemail, no callback queue.
Nadia Ellery founded this studio in 2015, the same year California’s ADU permitting rules began shifting meaningfully in favor of homeowners. Since then, Ellery ADU Studio has designed, permitted, and built more than 900 ADUs across Upland and the broader region – every one with a written price locked before the first shovel moved and a documented photo record when work was complete. That track record is what backs the 365-Day Done Right Promise: if the finished ADU doesn’t match the permitted drawings, we make it right, in writing, before the project starts.
Our customers tend to be homeowners in Upland and nearby cities who bought between 2015 and 2025, are sitting on meaningful equity, and want the ADU treated as a long-term asset – not a weekend side project handed off to whoever underbid everyone else. They’ve read the three-star reviews. They want the price on the page. We put it there.
Fast, Local ADU Design & Permitting in Upland
Proximity matters in ADU work. Upland sits in the western Inland Empire, and the permit offices we deal with most – Upland’s Development Services counter, along with those in Rancho Cucamonga, Ontario, and Montclair – are a short drive from our studio. That means no remote-consultant delays, no permit runner markups billed back to you, and no designer who has never set foot in a San Bernardino County planning office.
When you call (840) 212-3065, a live person answers. We can typically schedule an Site Assessment in Upland within two business days, and in most cases we’ve seen the property and delivered a written project price within a week of that first visit. The permit set – the actual drawings, Title 24 energy compliance documents, and structural calculations – is treated as the core product here, not an afterthought handed to a junior drafter after the contract is signed.
For homeowners who already have a written estimate from another firm, we offer a Free Second Opinion at no charge. Bring the paperwork. We’ll tell you what’s in it, what’s missing, and what it should cost in Upland’s current permit and construction market.
Services We Provide Under One Contract

Every project Ellery ADU Studio takes on falls under one of five service categories, all covered by the same single contract at the same single written price:
- ADU Design & Permitting – full permit-ready drawing sets, Title 24, structural, and all agency submittals for Upland and surrounding jurisdictions
- Garage Conversion ADU – converting an attached or detached garage into a permitted living unit; typically runs $120,000-$190,000 all-in, drawings through final inspection, depending on existing slab condition and utility connections
- New Detached ADU – ground-up construction on your lot; Upland lots in the 6,500-9,000 sq ft range common near 19th Street and the Colonies area often support a 600-1,000 sq ft detached unit
- Junior ADU & Interior Conversion – converting interior space within the primary residence; lowest construction cost of the four build types, fastest permit cycle in most cases
- ADU Site Prep & Utilities – grading, sewer lateral, gas, and electrical service upgrades scoped and priced before work starts, not discovered mid-project
If your project involves prefab or modular construction, we work directly with systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie – specifying and coordinating them inside the same contract so there’s no gap between who drew it and who built it.
What ADU Permitting Actually Costs in Upland, CA
Upland’s permit fees are set by the city’s fee schedule, adopted by the Development Services Department. As of 2025, plan check and permit fees for a new detached ADU in the 600-1,200 sq ft range typically fall between $8,000 and $14,500 in combined city fees, depending on square footage, fire sprinkler requirements, and school district impact fees. Those numbers change; the written quote you receive from us reflects current fee schedules at the time of signing.
On the design and construction side, here’s how Upland-area ADU projects tend to range:
| ADU Type | Typical All-In Range (Upland) | Notes |
|---|---|---|
| Junior ADU / Interior Conversion | $60,000 – $110,000 | No new foundation; existing walls reused |
| Garage Conversion ADU | $120,000 – $190,000 | Slab condition and utility routing drive variance |
| New Detached ADU (stick-built) | $185,000 – $320,000 | Lot size, setbacks, and utility distance matter |
| New Detached ADU (prefab/modular) | $160,000 – $270,000 | Varies by brand and site prep complexity |
Every figure above is quoted in writing before any work starts – Haven Standard Clause 1, no exceptions. These are Upland-market ranges, not statewide averages pulled from a blog post. The San Bernardino County area has its own labor market, its own inspection cadence, and its own quirks around lot coverage rules that differ from Los Angeles County jurisdictions just over the Pomona border.
One Upland-specific item worth knowing: properties in the northwest quadrant of the city, near Foothill Boulevard and Mountain Avenue, sometimes carry additional HOA & Zoning Compliance requirements tied to the Upland Airport Influence Area (AIA). If your address falls within that boundary, your permit set needs a note and potentially a land use compatibility review before the city will accept it. We check this at intake, not after you’ve paid for drawings.
Areas We Cover

Ellery ADU Studio is based in Upland and works across the western and central Inland Empire. The cities and communities we regularly design and permit ADUs in include:
- Upland – our primary market; we know the Development Services counter, the standard plan check timeline (typically 4-8 weeks for a first submittal), and the local inspectors
- Montclair – adjacent to Upland’s southern edge; smaller lots are common, which changes setback math and sometimes rules out a detached unit in favor of a JADU
- Rancho Cucamonga – larger lots east of Upland frequently support detached ADUs; RCMU (Rancho Cucamonga Municipal Utilities) has its own service connection process we handle in-house
- Ontario – active ADU market; city has streamlined its ADU plan check process in recent years
- Pomona – just across the Los Angeles County line; we work in both counties and know where the code differences matter
- Chino – newer housing stock, often with HOA considerations; we review CC&Rs before quoting
- Fontana – larger lots in the north half of the city are well-suited to detached ADUs
- Eastvale – Riverside County jurisdiction; permits route through a different county portal, which we manage
For a full overview of our work specifically in the Upland market, see our ADU Design & Permitting in Upland page, which covers local setback requirements, Upland’s standard plan check process, and current fee ranges in detail. You can also visit the home page for an overview of everything Ellery ADU Studio covers under one contract.
What the Permit Set Actually Includes
A permit set from Ellery ADU Studio is not a sketch-and-hope package. The documentation a client receives before permit submittal includes:
- Site plan showing existing structures, proposed ADU footprint, setbacks, and lot coverage calculation
- Floor plans, elevations, and building sections drawn to city-required scale
- Title 24 energy compliance report (California’s mandatory energy code – required on every new ADU and most conversions)
- Structural calculations and foundation detail, signed by a licensed structural engineer
- Electrical, plumbing, and mechanical plans sufficient for plan check
- Documentation of any required agency approvals – Upland’s fire department review, utility service verification, school district impact fee confirmation
When the city comes back with corrections – and most first submittals get at least one correction letter – we handle the response. That’s included. No per-revision billing, no surprise invoice after the second plan check cycle.
The Haven Standard: What It Means in Practice

Every Ellery ADU Studio project is governed by The Haven Standard. Here’s what that means in plain terms:
- Clause 1 – Written Price Before Any Work Starts: You receive a written, itemized price before we begin drawings, permitting, or construction. The phrase “call for a quote” does not appear in our contracts because it shouldn’t appear in yours either.
- Clause 5 – No Surprises: Scope is locked at signing. No door-side upsells after the crew arrives, no scope creep billed at the end. If something changes because of a condition we couldn’t have known about – say, a buried utility not shown on city records – we document it, show you evidence, and quote the change in writing before touching it.
- 365-Day Done Right Promise: If the finished ADU is not built to the permitted drawings, we make it right. This is in writing, signed before the project starts, not offered retroactively when there’s already a dispute.
- Documented Photo Record: Every site visit produces a documented photo record. Clients receive evidence of what was found and what was done – not a summary of how the visit felt.
These aren’t marketing phrases. They’re clauses in a contract you can read before you sign it.
Frequently Asked Questions
How fast can Ellery ADU Studio start on my ADU project in Upland?
We can typically schedule an on-site assessment in Upland within two business days of your first call, and in most cases deliver a written project price within a week of that visit. The Upland Development Services office accepts ADU Permit Application submittals on a rolling basis, so once your permit set is complete we can submit without waiting for a special intake window. City plan check in Upland has been running 4-8 weeks for a standard first submittal as of 2025, though that timeline shifts based on city staffing. Call (840) 212-3065 and a live person will tell you where the current queue stands.
Do you serve my area if I’m not in Upland itself?
Yes. We regularly work in Montclair, Rancho Cucamonga, Ontario, Pomona, Chino, Fontana, and Eastvale, in addition to Upland. Each of those jurisdictions has its own plan check process and fee schedule, and we work in all of them. If your address is in one of those cities and you’re not sure whether we cover it, call (840) 212-3065 – a live person answers and can confirm coverage in under two minutes.
How much does ADU design and permitting cost in the Upland area?
Design and permitting fees – separate from construction costs – for a typical Upland ADU project run between $18,000 and $38,000 depending on project type, complexity, and how many plan check cycles are required. That range includes the full permit set, all engineering, Title 24, and permit submittal management through final approval. City permit fees are on top of that and run $8,000-$14,500 for most projects (see the table above for construction cost ranges by ADU type). Under Haven Standard Clause 1, your exact written price is delivered before any work begins. Call (840) 212-3065 for a free second opinion if you already have a written estimate from another firm.
Can I reach someone after business hours if I have questions about my project?
A live person answers calls to (840) 212-3065 around the clock – no voicemail queue, no callback promise that doesn’t materialize. For active projects, your project documentation and photo records are accessible to you directly; you don’t need to wait for a business-hours call to find out what happened on your site that day.
Key Takeaways

- Ellery ADU Studio is based in Upland and covers Montclair, Rancho Cucamonga, Ontario, Pomona, Chino, Fontana, and Eastvale under the same one-contract model
- Written price before any work starts, every time – Haven Standard Clause 1, no exceptions
- More than 900 ADUs designed, permitted, and built since 2015, all with documented photo records and written warranties
- Permit sets include full engineering, Title 24, and plan check management through final approval
- ADU construction in Upland typically ranges from $60,000 (JADU) to $320,000 (new detached stick-built), depending on type and site conditions
- 365-Day Done Right Promise: in writing, before the project starts
- Free Second Opinion available on any written estimate already in hand
- Live person answers calls 24/7 at (840) 212-3065
Ready to Talk Through Your ADU Project?
If you’re in Upland or anywhere in the surrounding Inland Empire and want a written price – not a ballpark, not a “it depends,” but an actual number tied to your actual lot – call (840) 212-3065. Nadia Ellery and the Ellery ADU Studio team answer around the clock. Bring any written estimate you already have and we’ll give you a Free Second Opinion on it. The site assessment is scheduled fast, the written quote follows within a week, and nothing moves until you’ve seen the number and signed off on it.
Written by Nadia Ellery, Owner at Ellery ADU Studio Upland, serving Upland and nearby areas.
What Our Customers Say
"Garage conversion finished on the drawings and close to the schedule. They were honest that the sewer connection was the unknown, and it was."
- Arjun D."Detached unit in the back garden. Good design, good build quality, and the cost changes were documented and agreed in advance."
- Stefan B."They walked us through setbacks and utility capacity before we paid anything, and told us one of our two options was not going to get approved."
- Mireille T.