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(657) 286-7915Pomona, CA 91766
Contact Ellery ADU Studio Pomona - Free ADU Estimate in Pomona
Call us at (657) 286-7915 for a free ADU estimate in Pomona. When you reach our live coordinator, we’ll ask a few questions about your property and your goals, then schedule a no-pressure site assessment. There’s no hard sell, no deposit to book the visit, and we’ll often have availability the same week you call.
What Happens When You Call
Step 1: We answer and listen. A live coordinator picks up, takes your address in Pomona or nearby, and notes what you’re considering: a detached backyard unit, garage conversion, or attached addition. You’ll get a rough sense of whether your lot qualifies under Pomona’s ADU ordinance before we even schedule.
Step 2: We schedule a site assessment. Nadia Ellery or a senior assessor walks your property, checks setbacks, utility locations, and access for construction. We photograph what we find and flag any issues that could affect permit timing or build cost.
Step 3: You receive a written estimate. Within 48 hours, you get a line-item quote covering design, permit expediting, and construction. The price is fixed under Haven Standard Clause 1: Have it in writing. No change orders unless you change the scope.
Step 4: We permit, build, and document. Once you approve, we produce the architectural set, pull Pomona permits, and build to the drawings. Every phase is photographed and logged. You get a final packet with as-built photos, inspection sign-offs, and warranty documentation.
Why Pomona Homeowners Call Us First

- We know Pomona’s permit landscape. We’ve worked with Pomona’s Planning and Building divisions enough to know where the queue backs up and how to keep a permit set from stalling. That local fluency typically saves weeks compared to outfits that treat Pomona like every other L.A. County city.
- Every pro is required to hold proper coverage. Every contractor working under our name carries the license and insurance California requires, and we verify it before they step on your property. You can request any license number at any time; Haven Standard Clause 3 demands we provide it.
- The price on the page is the price you pay. Our written estimates itemize design, permits, materials, and labor separately. We don’t bury contingencies or pad for “unknowns” we already spotted during assessment. Haven Standard Clause 5: No surprises.
- We document everything and guarantee the work. Haven Standard Clause 4 requires photos and readings of actual conditions found. That evidence protects both of us if questions arise later, and our workmanship warranty is spelled out in the same contract that fixed your price.
Our Service Area Around Pomona
We live in this valley and build across it. Most of our ADU projects sit within 25 minutes of our Pomona base: Montclair, San Dimas, Diamond Bar, Upland, Covina, Glendora, Chino, Chino Hills, West Covina, Ontario, and Rowland Heights. If you’re in the Pomona Valley or San Gabriel Valley fringe and wondering whether we cover your lot, call anyway. We’ve taken projects in Claremont, La Verne, and Walnut after homeowners called to ask.
Frequently Asked Questions - Booking & Estimates

Yes. The site assessment and written estimate cost nothing and obligate you to nothing. We absorb that cost because Haven Standard Clause 1 requires a written, fixed price before any work begins, and we can’t produce one without seeing your property. Call (657) 286-7915 to schedule yours.
We typically schedule assessments within a few business days, and often the same week you call. Actual build start depends on design completion and permit issuance, which vary by project complexity and Pomona’s current queue. We’ll give you a realistic timeline during your assessment, not an optimistic one to win your signature. Call (657) 286-7915 to check current availability.
No. Our assessment fee structure doesn’t change based on when we meet. We offer evening and weekend appointments because many Pomona homeowners can’t step away during work hours, and we don’t penalize you for scheduling constraints. The written estimate you receive reflects the project, not the appointment slot. Call (657) 286-7915 to find a time that works.
Your address, a rough idea of the ADU type you’re considering, and any known constraints: easements, septic vs. sewer, HOA rules, or previous plans you’ve collected. If you have a recent survey or property report, great, but don’t delay calling if you don’t. We pull most of what we need from public records once we have your address. Call (657) 286-7915 and we’ll guide you through it.
We accept checks, wire transfers, and major credit cards. Payment is structured by project milestone: design approval, permit issuance, rough inspection, and final completion. This keeps your capital aligned with visible progress, and it’s spelled out in your written contract before anyone starts. Call (657) 286-7915 to discuss what structure fits your situation.
Call or Request a Callback
(657) 286-7915
Our phone is answered live every day of the week. If you prefer, ask for a callback and Nadia Ellery or a senior team member will return your call within one business day. No pressure, no deposit to talk, just a free assessment and a written price you can compare.
Written by Nadia Ellery, Owner at Ellery ADU Studio Pomona, serving Pomona and the surrounding valley since opening this branch.