New Detached ADU in Lodi - Plans, Permits & Build, One Fixed Price

Fast, Reliable New Detached ADU Across Lodi

A new detached ADU in Lodi typically costs $260,000-$410,000 all-in, from drawings through final inspection, depending on size, foundation work, utility runs, and what we find when we open the walls of an older structure. That price is written down before we start, not after we discover problems. If you’re on a larger lot east of Lower Sacramento Road or near Tokay Street wondering whether a backyard unit pencils out, call (971) 497-2402 and we’ll tell you what we think before you spend a dollar.

Call (971) 497-2402

Ellery ADU Studio has done this work on Lodi parcels since 2015, and we’ve seen what these older lots turn up. The neighborhoods off Vine and Elm, the post-war ranches west of Hutchins, the 1950s tracts south of Kettleman Lane. The parcels are bigger than anything you’ll find in Stockton or Sacramento, and many of them still carry the remnants of Lodi’s grape-drying past: rear-lot sheds, old farm storage, carriage structures that predate the city’s residential zoning. A new detached ADU here is a different job than it is in a brand-new subdivision, because the site has history. Our New Detached ADU team starts every Lodi assessment with that history in mind.

Why Ellery ADU Studio Is Lodi’s Preferred New Detached ADU Company

We’re a design-build studio, which means one contract, one written price, and one team responsible for the drawings, the permit set, and the construction. There’s no designer blaming the builder when something goes sideways. Since 2015, we’ve designed, permitted, and built more than 900 ADUs, every one with a written price before work started. Nadia Ellery set up the practice specifically because California’s ADU rules shifted that year, and she wanted a shop where the permit set was treated as the core deliverable, not an afterthought.

In Lodi, that matters more than in most cities. The mid-century rezonings that converted agricultural parcels into residential lots left behind structures with clouded legal status. A garage that looks like a garage might still be recorded as a grape-drying shed. Our permit specialists know how the city handles these, and we review title and zoning before we ever quote a number. Under The Haven Standard, Clause 1, every project gets a written price before any work begins. No call for a quote. No “we’ll see when we get in there.” The number is on the page.

We also answer the phone. A live person picks up 24/7 at (971) 497-2402. If you already have a written estimate from another builder, bring it to us and we’ll give you a free second opinion, line by line.

Our New Detached ADU Services in Lodi

Custom Built ADU

Some Lodi lots want a traditional stick-built unit, and we do that work from site prep through final inspection. On the 8,000 to 12,000+ square foot lots common east of Lower Sacramento Road, we can position a custom ADU to keep the existing backyard usable while still hitting Lodi’s setback requirements. We design the permit set in-house, then build it. One contract, one written price.

Prefab ADU Installation

Prefab systems from Dvele and Cover are a strong fit for Lodi’s older parcels, where a controlled factory build avoids months of outdoor framing through the Central Valley heat. We specify and coordinate these systems within our single contract, and we’ve found they’re especially useful for lots where access is tight between the main house and the fence line. The modular shell arrives on a truck, we set it, and then our crews handle the site work, utility connections, and finish scope. Not every prefab brand works for every site, and we’ll tell you which one actually fits your Lodi parcel rather than pushing a single product.

Modular ADU

Modular construction is not the same as prefab panelization, and in Lodi the distinction matters. Modular units arrive as completed modules with finishes installed, which shortens on-site time to weeks instead of months. For Lodi homeowners who want to minimize disruption to an occupied house, this is often the right move. We size the modules to your lot’s actual setbacks and the location of your existing sewer lateral, which on older Lodi ranches is sometimes cast iron and due for replacement anyway. That gets priced upfront, not after excavation.

Studio ADU

Studio ADUs run 400-600 square feet and on a Lodi lot they’re often the fastest path to rental income. The Delta breeze keeps cooling loads lower than you’d expect for the Central Valley, so a properly sized mini-split costs less to run than a Stockton unit of the same square footage. We include the HVAC load calculation in the permit set, which is not something every builder does. If your lot has an old freestanding garage, we’ll also assess whether converting it makes more financial sense than building new. We do both, so the recommendation is based on your site, not our workload.

Trusted Brands We Service in Lodi

We specify and coordinate modular and prefab systems from Cover, Dvele, and Mighty Buildings, among others. What we don’t do is show up with a single brand and try to make it fit your lot. On a Tokay-area ranch with a rear-lot shed we converted last year, the Dvele shell worked because the module width cleared an existing oak and the foundation tolerances matched the older slab’s elevation. On a different Lodi site, a Cover panel system would have been the wrong choice for access reasons. We’ll tell you which system suits your parcel, and we back the coordination with the same written price and 365-Day Done Right Promise that governs every Ellery project. If it’s not built to the permitted drawings, we make it right. That’s in writing before we start.

Common New Detached ADU Problems We See in Lodi Homes

Opening up an older Lodi structure is when the real conditions reveal themselves. Here’s what we encounter most often, and how we handle it before it becomes a change order.

• Grandfathered outbuildings with clouded title. Mid-century rezonings left many rear-lot structures with legal status that doesn’t match their physical condition. A shed that looks like storage may still be recorded as agricultural. We run title and zoning review first, because a permit that dies mid-project is the most expensive surprise there is.
• Undersized framing in 1940s-1970s ranches. When we open walls on older Lodi homes, we frequently find 2×4 rafters and undersized floor joists that won’t meet current code once the structure becomes living space. We write a structural allowance into the contract before demo so the reinforcement is priced and approved, not argued about after.
• Outdated electrical feeds. Two-wire services patched across decades are common behind the drywall in post-war Lodi houses. Adding an ADU triggers a panel upgrade and often a new subpanel run to the backyard unit. We size the electrical scope during the inspection phase.
• Failed waterproofing on flat or low-slope roofs. Grape-drying sheds and old garages often have roll roofing that’s decades past its useful life. Once we open the roof assembly, we find what we find, and the fix gets a written price before we proceed. This is the single biggest reason a detached ADU quote moves, and the reason our quotes don’t.

Pricing for New Detached ADU in Lodi, CA

We Also Serve Cities Near Lodi

Our crews serve Lodi and the surrounding Central Valley communities, including Stockton, Manteca, Elk Grove, and Oakley. Dispatch and scheduling are coordinated from our Central Valley office in Fresno, with local crews working in Lodi and nearby cities directly. If you’re a few miles outside Lodi proper, call us anyway. The factors that make a Lodi ADU different, like the Delta breeze and those larger lots, don’t stop at the city limit line.

FAQs - New Detached ADU in Lodi