ADU Company in Corona, CA
Kitchen remodeling in Corona usually means working inside a 1950s to 1970s stucco tract home where the original footprint was built for a different era of cooking, or a newer south hills house where the kitchen opens to a view but bakes in the afternoon sun. We’re Sunstone ADU Builders, and we handle the full scope: ADU construction, kitchen remodeling, and bathroom remodeling under one contract. Corona’s mix of older flat-grid homes and newer hillside subdivisions means every kitchen project starts with understanding your specific lot, your home’s age, and how you actually use the space. Call (855) 949-1913 for a free estimate.
Why Corona Homes Are Different
Corona sits in the Santa Ana River corridor, and that location shapes every remodel and ADU we build here. Hot, dry summers with Santa Ana wind events mean kitchens need ventilation that actually moves air, not just a recirculating hood that came with a 1960s tract home. Attic space above a Corona kitchen gets brutally hot by August, so we plan for proper exhaust routing and heat-resistant materials from day one.
The housing stock splits along clear lines. North of the 91, the older downtown grid around 92879 has tight single-story stucco homes where a kitchen remodel often means working inside a compact footprint, sometimes converting a utility room or reconfiguring a load-bearing wall with city-approved engineering. Down in the south hills around 92883, kitchens in 1980s and 1990s houses open to larger lots, but the grade changes how we run gas lines, venting, and even how deep we can trench for a kitchen island with plumbing. East Corona’s 92880 has more 1990s and 2000s two-story homes, where upstairs kitchens sometimes hide framing surprises behind drywall that a flat-lot builder never sees. In the south hills, inspectors regularly flag undersized drainage behind retaining walls on sloped lots, and the same lot grading affects how an attached kitchen addition or a detached ADU with a full kitchen gets permitted. We plan for retaining-wall drainage and slope engineering from the first site visit, because Corona’s terrain is not something you discover halfway through a project.
Our Main Corona Services
Corona homeowners call us most about two things: building a backyard ADU and remodeling a bathroom, often in the same property, often in the same year. Here’s how each one works in Corona specifically.
ADU Builders in Corona
Corona’s ADU market is defined by the steep grade and lot-size split between the older flat-grid neighborhoods and the hillside subdivisions of the south. Most ADU projects here hinge on retaining walls, drainage, and slope engineering that flat-lot cities never confront. We build both prefab and traditional stick-built ADUs, and we’re authorized installers for Abodu, Cover, and Tuff Shed structures. If you’re weighing a detached unit on a sloped parcel or a garage conversion on a flat lot, ADU Builders in Corona has the full picture.
Bathroom Remodeling in Corona
Corona bathrooms in 1950s and 1960s homes often hide original cast-iron plumbing and tile set in a thick mortar bed. Tearing that out without disturbing the rest of the slab takes care and experience. Newer south hills bathrooms have their own quirks: humidity from canyon air and hard water from local supply lines mean we prioritize ventilation and tile choices that hold up. We finish ADU bathrooms rental-ready, matching the same material standards we use on primary-home remodels. Bathroom Remodeling in Corona covers the full scope, including permits and line-item pricing.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Kitchen Remodeling in Corona
Kitchen remodeling in Corona most often means bringing a 1960s tract kitchen into the way you actually cook now, or updating a 1990s south hills kitchen where the layout fights the view and the sun. Corona’s hot summers and wind events make ventilation and heat-resistant materials a real concern, not an upsell, and homes built before 1980 usually need electrical panel upgrades before we install modern appliances. We handle the whole project: demolition, framing, plumbing, electrical, cabinets, counters, tile, and the finish work. Kitchen Remodeling is the full service line.
Cabinet and countertop replacement
Signs you need it
Your cabinet boxes are swollen from years of heat and humidity, or the drawer slides bind and the laminate edges peel.
What it costs in Corona
Cabinet and countertop replacement in Corona typically ranges from $8,500 to $18,900 depending on linear footage, material grade, and whether we’re working inside a 1960s tract kitchen or a larger south hills footprint.
How we do it
We demo to the studs, check for framing or plumbing surprises common in Corona’s older homes, then install new cabinets, countertops, and hardware with shims and leveling done on your actual slab, not a showroom floor.
Kitchen floor plan reconfiguration
Signs you need it
Your kitchen’s work triangle puts the fridge, sink, and range in three different rooms, or the island, if you have one, blocks the only path to the back door.
What it costs in Corona
Floor plan changes in Corona kitchens typically run $14,800 to $43,900, and the range widens because a load-bearing wall in a 1950s tract home costs more to remove than a non-load-bearing divider in a 1990s build.
How we do it
We start with a structural evaluation, pull the Corona city permit, install proper headers and supports where walls come down, then reroute plumbing and electrical to match the new layout.
Full kitchen remodel with ADU
Signs you need it
You’re building a detached ADU and want the rental unit’s kitchen finished to the same standard as the main house without coordinating a second contractor.
What it costs in Corona
A full ADU kitchen in Corona usually lands between $19,500 and $49,000, depending on appliance tier, cabinet grade, and whether the ADU is prefab or stick-built on a sloped south hills lot.
How we do it
Since we build the ADU shell and finish the kitchen in-house, we rough in plumbing and electrical before drywall, so there’s no tearing into fresh walls later to add an outlet or a vent line.
What Kitchen Remodeling Costs in Corona
| Item | Typical range in Corona |
|---|---|
| Cabinet and countertop replacement | $8,500 – $18,900 |
| Kitchen floor plan reconfiguration | $14,800 – $43,900 |
| Full ADU kitchen buildout | $19,500 – $49,000 |
Will my 1960s Corona kitchen need an electrical panel upgrade?
Usually yes. Homes built before 1980 in Corona commonly have 100-amp panels, and modern kitchens with induction cooktops, double ovens, and dedicated appliance circuits need 200 amps. We verify panel capacity during the estimate and include the upgrade in your line-item quote.
Can you remodel my kitchen and build my ADU at the same time?
Yes. We run both scopes under one contract, one schedule, and one permit set. That keeps inspections coordinated and avoids the delay of waiting on a second contractor. Call (855) 949-1913 to schedule your free estimate.
Brands We Service in Corona
We build and install Abodu and Cover prefab ADUs, Tuff Shed structures, and we specify James Hardie fiber cement siding on most exteriors for fire and moisture resistance in Corona’s dry, windy climate. Parts for these brands are stocked locally, and standard replacements usually turn around within a week. See our brands for the full list.
Pricing for ADU Company in Corona, CA
| Service | Typical range in Corona |
|---|---|
| Prefab ADU (Abodu, Cover) | $180,000 – $400,000 |
| Traditional stick-built ADU | $250,000 – $500,000 |
| Garage conversion ADU | $120,000 – $220,000 |
| Tuff Shed-style ADU | $80,000 – $180,000 |
| Kitchen cabinet and countertop replacement | $8,500 – $18,900 |
| Kitchen floor plan reconfiguration | $14,800 – $43,900 |
| Full ADU kitchen buildout | $19,500 – $49,000 |
| Bathroom remodel (ADU interior) | $12,000 – $35,000 |
What pushes a Corona project higher is almost always the lot: slope work, retaining-wall drainage, and longer utility runs on south hills parcels add engineering and trenching costs that flat-lot cities don’t see. Our quotes are line-item and fixed once we’ve walked the site, so the price we agree on is the price you pay.
Neighborhoods We Serve in Corona
We work across all four Corona ZIP codes, from the older flat-grid streets around downtown to the hillside subdivisions south of the 91 and the two-story east side neighborhoods.
- Downtown Corona (92879)
- North Corona flat-grid tracts (92882)
- South hills subdivisions (92883)
- East Corona two-story neighborhoods (92880)
- Corona Hills and surrounding slope lots
Most Corona neighborhoods are within a 20 to 30 minute drive from our scheduling desk, and we group site visits by area so you’re not waiting days for someone to walk your lot.
Service Area – Cities Near Corona
Sunstone ADU Builders also serves homeowners in the communities around Corona, including Home Gardens, CA, El Cerrito Corona, CA, Eastvale, CA, and Norco, CA. If you’re nearby and planning an ADU, kitchen remodel, or bathroom remodel, we’ll bring the same local permit knowledge and terrain experience we use on Corona jobs.
Serving Corona, CA — Our Local Coverage Area
We’re based in the Corona 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 About ADU Company in Corona
Once we have a signed contract and permits submitted, Corona city review typically takes several weeks to a few months depending on plan complexity and whether the lot requires slope or drainage review. We start site prep as soon as the permit clears, and we’ll give you a realistic timeline at the estimate, not a sales promise.
Some Corona HOAs have architectural review requirements on top of city permits, especially in newer south hills subdivisions. We review your HOA’s CCR documents during estimating, flag any restrictions early, and draft plans that meet both city and HOA standards the first time.
Yes. We pull all Corona city permits, schedule inspections, and stay on site through final approval. Slope, drainage, and retaining-wall conditions in south Corona often trigger extra plan review, and we handle those requests directly so you’re not chasing paperwork.
What happens when you call
- 1A real person answersNo phone trees — talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Corona Customers Say
"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Reggie Ellison"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Doug Padgett"He was honest that our lot had a slope problem that would add real cost, before we signed anything."
— Paul Pruitt