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(657) 567-6590Garden Grove, CA 92841
Contact Ellery ADU Studio Garden Grove - Free ADU Estimate in Garden Grove
Call us at (657) 567-6590 and you’ll reach a live coordinator who connects you with our local team. There’s no hard sell, no deposit required to get on the schedule, and no obligation after we assess your property. We offer free in-home assessments across Garden Grove, and we can usually get to you within a few business days.
What Happens When You Call
Step 1: We answer and listen. A live coordinator picks up during business hours, takes your address in Garden Grove or nearby, and asks what you’re hoping to build - a detached ADU over the garage, a backyard cottage, a garage conversion. No scripted upsell. Just enough detail to match you with the right estimator.
Step 2: We schedule your free assessment. We find a window that works, confirm it by text, and send a reminder the morning of. Our estimator arrives on time, walks your property with you, and photographs what exists - setbacks, utility locations, access paths, soil conditions that might affect foundation work.
Step 3: You receive a written estimate. Within 48 hours, you get a line-item quote: design, permit set, construction, finishes. One flat price. One contract. If something changes after we start, we document it and you approve it in writing before we proceed. That’s Haven Standard Clause 1.
Step 4: We permit, build, and finish to the drawings. Our team pulls permits through Garden Grove Community Development, coordinates inspections, and delivers what you signed off on. Photos and readings from every phase go into your project file, which you can access anytime.
Why Garden Grove Homeowners Call Us First

- We know Garden Grove’s permitting rhythm. We’ve worked with Community Development on enough ADU projects to know their typical review timeline and what triggers a plan check revision. That local knowledge keeps your permit moving.
- Every pro on your job is required to hold the license and insurance California requires. We verify coverage before anyone sets foot on your property, and license numbers appear on your contract. No hand-waving about “fully insured” without proof.
- The price on the page is the price you pay. Our written estimate lists every line item - no “allowances” that balloon later, no “while we’re in here” surprises. Haven Standard Clause 5: no door upsell, no scope creep.
- We guarantee our workmanship in writing. Your contract includes a documented warranty period and clear terms for what we fix and how fast. It’s not a handshake. It’s a clause you can reference.
Before
AfterOur Service Area Around Garden Grove
We build ADUs throughout central Orange County. Most of our work happens within 20 minutes of Garden Grove: Westminster, Fountain Valley, Cypress, Santa Ana, Buena Park, Huntington Beach, Fullerton, Orange, Costa Mesa, Cerritos, and Tustin. If you’re just outside that radius - Anaheim Hills, Yorba Linda, parts of Long Beach - call anyway. We’ve taken projects beyond our usual map when the site and timeline make sense.
Frequently Asked Questions - Booking & Estimates

Yes. The in-home assessment and written estimate cost nothing, and you’re under no obligation to hire us. We believe you should know the real price before you decide anything. Call (657) 567-6590 to schedule yours.
We typically schedule assessments within three to five business days. During peak permitting seasons - usually spring and early fall - it may stretch to a week. We’ll tell you honestly when you call.
No. Our standard hours are 7:30 AM to 7:30 PM, seven days a week, and we don’t add surcharges for Saturday or Sunday assessments. If you need an evening slot, we’ll accommodate when possible.
Your property address, a rough idea of the ADU size or type you’re considering, and any questions about setbacks or utility locations. If you have a recent survey or property plot, great - but don’t delay calling if you don’t. We handle the documentation.
We accept check, ACH transfer, and major credit cards. Payment schedules are spelled out in your written contract - typically a deposit at signing, progress payments at defined milestones, and final payment at completion. No cash-only demands, no surprise payment requests.
Call or Request a Callback
Reach us at (657) 567-6590 during our operating hours: 7:30 AM to 7:30 PM, Monday through Sunday. If we miss you, leave a message and we’ll return your call by the next business day. You can also text us at the same number - many of our Garden Grove clients prefer it.
Written by Nadia Ellery, Owner at Ellery ADU Studio Garden Grove, serving Orange County since opening our local branch in 2015.