Cover ADU in Santa Ana, CA | Ellery ADU Studio Santa Ana
We provide independent Cover ADU service across Santa Ana, from the established blocks of Floral Park to the Craftsman corridors near downtown. The one thing that makes our Cover work here different is this: most of what we touch in Santa Ana isn’t a fresh install, it’s our Garage Conversion ADU in Santa Ana that needs to be legalized under SB 13, and that changes every assumption about electrical, envelope, and inspection. If your Cover Studio, 1-Bed, 2-Bed, or Above-Garage unit needs panel work, mini-split correction, or full permitting, call us at (949) 541-8498 for a written estimate before any work starts.
Why Santa Ana Residents Choose Us for Cover Service
We’ve worked on Cover ADU configurations across Santa Ana’s tight R1 lots since 2015, the year California’s ADU laws shifted and these units started landing in earnest. Nadia Ellery, who leads Santa Ana ADU Design & Permitting, grew up in Santa Monica paying attention to how small spaces work or quietly fail, then studied architectural drafting and construction technology at Santa Monica College before years in the field learning what drawings cost when they meet real foundations. That background matters here because Santa Ana’s housing stock, built around 1920s-1950s Craftsman bungalows and post-WWII tract homes on 5,000-6,500 square foot lots, rarely matches the site assumptions in a factory spec sheet.
We’re an independent Cover service provider. Not authorized, not partnered, not warranty-endorsed by Cover. We don’t follow a manufacturer’s script. We follow what we find on site, document it with photos, and quote a single written price before any work begins under Haven Standard Clause 1. Our crew carries Cover’s OEM electrical interface components and OEM mini-split control boards for warranty-preserving repairs, plus quality aftermarket consumables for out-of-warranty units. When you call (949) 541-8498, a live person answers, and we offer a Free Second Opinion on any written estimate already in hand.
Common Cover ADU Problems We Solve in Santa Ana

- 100-amp panel and separate meter upgrades. Cover’s panel-ready interface assumes a modern main panel with capacity for a dedicated subpanel. Santa Ana’s older homes, many with original 1920s-1950s electrical, were never wired for a separate ADU meter. When these units enter SB 13 legalization, SCE and city inspectors require a dedicated 100-amp panel and separate meter. We handle the full upgrade, coordination with SCE, and inspection sign-off.
- Mini-split undersizing on west- and south-facing slabs. Cover’s factory mini-split sizing assumes a standard thermal load profile. Santa Ana’s inland basin location means west- and south-facing garage slabs absorb afternoon heat that the factory unit can’t offset. We recalculate Manual J loads for the actual orientation and upgrade to correctly sized equipment, documented in the permit set.
- Rollup door weatherization failures during Santa Ana wind events. When the original garage door is retained on a Cover conversion, the track and header aren’t sealed to the modular shell’s spec. The low-humidity, high-temperature gusts pressurize the unit, driving dust and heat through gaps. We seal or replace the opening to meet Title 24 envelope requirements.
- Slab alignment issues on pre-1960 foundations. Cover’s modular floor and wall panels sit on existing garage slabs that are often cracked or unlevel in Santa Ana’s older construction. The factory seams don’t align with what the site assessment assumed. We handle foundation and grading corrections as part of the same contract, not a surprise change order.
- Electrical overload from informal 20-amp house taps. A large share of Santa Ana’s unpermitted conversions were wired by homeowners who tapped a single 20-amp circuit off the main house panel with no subpanel. The Cover unit’s kitchen and HVAC load together trip that breaker instantly. We redesign the electrical from the main service outward.
Before
AfterCover Service in Santa Ana: What Local Conditions Mean for Your Equipment
Santa Ana’s density and multigenerational Latino household culture have produced one of Orange County’s highest concentrations of unpermitted, already-occupied garage conversions. Most of our Cover work here is legalizing an existing informal unit under California’s SB 13 amnesty pathway rather than installing a new shell. This is a niche that barely exists at the same scale in Irvine or Tustin. When these units enter permitting, SCE and city inspectors require a dedicated 100-amp panel and separate meter, a line-item cost that consistently blindsides homeowners who assumed legalization was mainly paperwork. On a 1940s Craftsman bungalow near French Street in the Lacy neighborhood, our crew legalized a Cover Studio that had been occupied as an unpermitted garage conversion for years. The original 20-amp house tap had no subpanel and the retained rollup door was leaking during Santa Ana wind events. We pulled a dedicated 100-amp panel and separate SCE meter, upgraded the mini-split to a correctly sized unit for the west-facing slab, and sealed the rollup opening. The unit now passes Title 24 and the owner has a permitted, rentable ADU. Here is what it costs, here is what you get, here is the document that says so.
Cover Models & Products We Service in Santa Ana

We service the full Cover line: Cover Studio, Cover 1-Bed, Cover 2-Bed, and Cover Above-Garage. Our Santa Ana crew stocks Cover OEM electrical interface components and OEM mini-split control boards for warranty-preserving repairs. For out-of-warranty units, we use quality aftermarket filters and thermostat sensors. We’re not a Cover dealer, but we know these units well enough to give an honest repair-vs-replace call. If the shell is sound, repair is almost always the right move. If the slab or envelope has failed, we’ll tell you that replacement is the only path that passes Santa Ana inspection. No upsell. The scope is locked at signing under Haven Standard Clause 5.
For Cover sales & service context across our broader coverage area, or to understand how we handle other prefab brands, see our main Cover page.
Cover Service Pricing in Santa Ana
Every Cover ADU project in Santa Ana is quoted with a written price before any work begins, per Haven Standard Clause 1. We don’t do “call for a quote.” We do documented site assessment, then a line-item scope.
Typical ranges for Santa Ana Cover work:
- Electrical panel upgrade to dedicated 100-amp with separate SCE meter: $4,800-$7,200
- Mini-split recalculation and replacement for correct sizing: $3,200-$5,400
- Rollup door opening seal or replacement for Title 24 compliance: $1,800-$3,600
- Foundation and grading correction for modular panel alignment: $2,400-$4,800
- Full SB 13 legalization package (electrical, envelope, mechanical, permit set, inspection): $14,000-$22,000
What drives cost: the condition of the existing slab, the age and capacity of the main house panel, whether SCE requires a service upgrade to the property, and how much of the original informal conversion needs to be opened up for inspection. Your free estimate includes a documented photo record of existing conditions, a permit feasibility review, and a written scope with every line item named. Call (949) 541-8498 to schedule your free estimate.
Serving Santa Ana, CA - Our Local Coverage Area

We’re based in the Santa Ana area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Cover ADU in Santa Ana
Yes. Santa Ana city inspectors and SCE both require a dedicated 100-amp panel and separate utility meter for any permitted ADU, including Cover units being legalized under SB 13. The informal 20-amp house tap common in unpermitted conversions will not pass inspection. Call (949) 541-8498 for an exact quote on your panel upgrade - estimates are free.
Yes. This is the majority of our Cover work in Santa Ana. We handle the full SB 13 amnesty pathway: documenting existing conditions, designing the correction set, pulling permits, coordinating SCE, and passing inspection. The owner receives a documented photo record at every stage and a permitted, rentable ADU at completion.
Often not, if it’s the factory-spec unit. Cover’s standard sizing assumes a moderate thermal load. Santa Ana’s inland basin heat, especially on west- and south-facing slabs, routinely exceeds that profile. We recalculate using actual orientation and local climate data, then specify upgraded equipment. Call (949) 541-8498 for a load calculation and written equipment quote - estimates are free.
The shell itself is fine. The weak point is the original rollup door track and header, which aren’t weatherized to the modular envelope spec. Santa Ana wind events pressurize the gap, driving dust and heat inside and stressing the mini-split. We seal or replace the opening to meet Title 24. The fix is straightforward once it’s identified.
Yes, if the unit meets Junior ADU requirements: attached to or within the existing primary residence, no more than 500 square feet, with exterior access and efficiency kitchen. Many Santa Ana garage conversions qualify as Garage JADU rather than full ADU, which changes the parking and setback requirements. We determine the optimal pathway during permit feasibility review and quote accordingly.
Service Areas Near Santa Ana

We provide Santa Ana service area coverage from our local base, with regular work in surrounding communities. Our crew takes on Cover ADU projects in Cover service in Tustin, where the housing stock and permitting environment differ significantly from Santa Ana’s density-driven legalization niche. We also work in Cover service in Fountain Valley, plus Costa Mesa, Garden Grove, and Orange. Each city has its own inspection priorities and typical failure modes; we adjust the permit set and scope accordingly.
Book Your Cover Service in Santa Ana Today
Call (949) 541-8498 to schedule your free estimate. A live person answers, 24/7. We’ll send Nadia or a senior crew member to document existing conditions, review your permit pathway, and deliver a written price before any work starts. Every project includes a documented photo record and is backed by our 365-Day Done Right Promise. If the finished work doesn’t match the permitted drawings, we make it right - in writing, before you sign.
Written by Nadia Ellery, Owner at Ellery ADU Studio Santa Ana, serving Santa Ana since 2015.