ADU Company in Highgrove — Design, Permits and Build Under One Contract

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ADU Company in Highgrove, CA

Kitchen remodeling in Highgrove means working with what the land gives you: older ranch homes on generous, often sloped parcels where a 1970s galley kitchen opens to a backyard that climbs toward the Box Springs foothills. We’re Colonial ADU Builders, and most of our Highgrove kitchen work is tied to a larger project, finishing the interior of a new ADU, or a full remodel in the main house while the family stays put. Call (877) 265-9846 to talk through your kitchen and how we handle the whole job under one contract.

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Why Highgrove Homes Are Different

Highgrove is unincorporated Riverside County, wedged between Riverside and Grand Terrace, and that single fact shapes every project we take on here. Permits don’t run through a city building department. They run through Riverside County’s ADU ordinance and county building and safety, which means setback interpretations, lot coverage math, and utility connection rules differ from what a homeowner’s neighbor in Riverside proper would face. We know which county plan checker wants to see what, and that saves months of back-and-forth on a kitchen addition or an ADU with a full kitchen.

The housing stock along the 92313 corridor is a mix of single-story ranch homes and older citrus-era properties. Many kitchens sit on slabs with cast-iron drain lines that have been in the ground since before the 1990 incorporation debates. When we open a wall in Highgrove, we’re as likely to find balloon framing and knob-and-tube remnants as we are to find dry rot from decades of Santa Ana-driven heat. The homes have character, but character means surprises. Our crews plan for them.

Summer heat here is serious. Triple-digit days are the norm from June through September, and when we’re doing a full kitchen gut, that means sequencing the work so the family isn’t without cooking capacity during the worst stretch. We stage materials close, keep dust control tight, and spec ventilation and cooling loads that hold up when the thermometer passes 105. Highgrove kitchens aren’t just about cabinets and counters. They’re about making a hot, dry climate house feel cool and functional.

Our Main Highgrove Services

Most Highgrove homeowners call us for one of two things: building an ADU in the backyard, and remodeling the bathroom that’s been original since the house went up. Both run through the same county permitting path, and both benefit from having one contractor who doesn’t hand off the interior finish to strangers.

ADU Builders in Highgrove

Detached ADUs are the default here because the lots are big enough to hold them. A half-acre parcel off Highgrove’s older streets leaves room for an 800 to 1,200 square foot unit without crowding the main house. But county-governed land means Riverside County ADU ordinance rules on setbacks and lot coverage, and many of these lots still slope enough to require retain-and-fill grading. We pull the county permits, run the utility trenches, and match you to the right build method, prefab from one of seven vetted manufacturers or fully site-built. ADU Builders in Highgrove covers the full process.

ADU Builders in Highgrove

Bathroom Remodeling in Highgrove

Bathrooms in Highgrove’s older ranch homes are typically 5×8 or smaller, with a tub-shower combo that’s been re-glazed twice and a single vanity squeezed next to the toilet. Remodeling here usually means re-configuring the footprint, replacing galvanized supply lines, and adding ventilation that actually pulls moisture out of a house that bakes all day. When the bathroom is inside a new ADU, our in-house crews finish it right after the structure goes up, no separate remodel contractor needed. Bathroom Remodeling in Highgrove walks through what a typical job involves.

Bathroom Remodeling in Highgrove
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What happens when you call

  1. 1
    A real person answersNo phone trees — you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Kitchen Remodeling in Highgrove

Kitchen Remodeling in Highgrove

Kitchen remodeling in Highgrove is as much about the bones of the house as the finish. Homes along the 92313 corridor range from 1960s ranch builds to pre-war citrus properties, and nearly every kitchen we open has a structural question behind the drywall: rotted sill plates, undersized joists, or old cast-iron drains that have done their time. When we remodel, we fix the foundation issues first, then build a kitchen that handles Highgrove’s triple-digit summers with proper ventilation, thoughtful airflow, and materials that don’t warp in dry heat. Our hub page on Kitchen Remodeling outlines the broader approach.

Full kitchen remodel

Signs you need it

You’re working around a floorplan that was laid out when kitchens were closed-off rooms, not open gathering spaces, and the cabinets, counters, and layout no longer fit how your family cooks.

What it costs in Highgrove

A full kitchen remodel in Highgrove typically runs $20,000 to $60,000 depending on layout changes, cabinet grade, and the condition of the subfloor and plumbing beneath.

How we do it

We strip the room to framing, replace or repair the subfloor and any bad plumbing, rough in the new layout, then install cabinets, counters, fixtures, lighting, and tile, with our own crews handling cabinetry and finishing details so there’s no subcontractor hand-off.

Kitchen cabinet refinishing

Signs you need it

Your cabinet boxes are solid wood and structurally sound, but the faces are worn, faded, or dated enough to drag down the whole room.

What it costs in Highgrove

Cabinet refinishing in Highgrove usually falls between $3,000 and $8,000 depending on the number of cabinets, door style, and whether you’re replacing hardware and hinges at the same time.

How we do it

We remove doors and drawers, clean and de-gloss every surface, repair any damaged veneer or joints, then spray or roll multiple finish coats in a dust-controlled area, and rehang everything with adjusted hinges so the doors close flush.

Countertop replacement

Signs you need it

Your existing countertops are cracked, scorched, or so outdated that they undercut the rest of the kitchen even after a repaint.

What it costs in Highgrove

Replacing countertops in Highgrove typically runs $2,500 to $8,000 depending on material and square footage, with quartz and granite at the upper end and laminate at the lower end.

How we do it

We template the exact dimensions after the cabinets are level, cut and edge the stone or composite off-site, then install and seal the new surface in a single day, leaving the kitchen usable that evening.

What Kitchen Remodeling Costs in Highgrove

Item Typical range in Highgrove
Full kitchen remodel $20,000 – $60,000
Cabinet refinishing $3,000 – $8,000
Countertop replacement $2,500 – $8,000

How long does a kitchen remodel take in Highgrove?

Most Highgrove kitchen remodels run four to eight weeks from demo to final walkthrough. County inspections add a few days at rough-in and final, and we sequence the work so you’re not without a cooktop for more than a week. Call (877) 265-9846 for a schedule that fits your timeline.

Do I need county permits for a Highgrove kitchen remodel?

Yes, if you’re moving plumbing, electrical, or walls, Riverside County requires permits for the work. We pull every permit, schedule the inspections, and don’t cover anything up until the county signs off. Call (877) 265-9846 and we’ll tell you exactly what your project triggers.

Brands We Service in Highgrove

In Highgrove we work with Boxabl and Plant Prefab for compact, factory-built shells that go up fast, and Tuff Shed for shed-conversion ADUs that fit tighter budgets. Exteriors on nearly every unit get James Hardie fiber-cement cladding because it holds up to Highgrove’s heat and dry winds better than vinyl or wood. Our brands page breaks down the full lineup and what each one does best.

Pricing for ADU Company in Highgrove, CA

Service Typical range in Highgrove
Full kitchen remodel $20,000 – $60,000
Kitchen cabinet refinishing $3,000 – $8,000
Countertop replacement $2,500 – $8,000
Detached ADU (site-built) $250,000 – $450,000
Prefab ADU (factory-built) $150,000 – $350,000
Shed-conversion ADU $80,000 – $150,000
Bathroom remodel (main house) $12,000 – $45,000
ADU bathroom (interior finish) $8,000 – $20,000

In Highgrove, prices climb when the lot slopes and grading becomes a line item, when utility trenches run long from street to foundation, and when a septic-versus-sewer decision forces a system upgrade. We give you a written, line-item quote before work starts, and the number we quote is the number you pay, no change orders unless you change the scope.

Neighborhoods We Serve in Highgrove

We work across the full 92313 corridor, from the flats near Center Street up into the hillside parcels that climb toward the Box Springs foothills. Every job gets the same upfront pricing and the same in-house crew, and we schedule within a few days of permit approval.

  • Highgrove proper, around Center Street and Orange Avenue
  • The hillside parcels east of the 215, below the Box Springs foothills
  • Properties along the Santa Ana River corridor, near the Grand Terrace line
  • Older citrus-era lots off Iowa and Massachusetts Avenues
  • The rancher neighborhoods west of the 215, toward Colton

Service Area – Cities Near Highgrove

Our crews cover Highgrove and the surrounding Inland Empire communities. If you’re in Grand Terrace, CA, Colton, CA, Loma Linda, CA, or Rubidoux, CA, the same team handles your project from permit to finish. We know the county and city planning differences across these borders, and that keeps your timeline from stalling.

Serving Highgrove, CA — Our Local Coverage Area

We’re based in the Highgrove 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 Highgrove

Ready to get started? Free estimates · Written quotes before work starts response in Highgrove
Call (877) 265-9846

What happens when you call

  1. 1
    A real person answersNo phone trees — talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Highgrove Customers Say

★★★★★ 4.8 from 4+ reviews

"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."

— Todd Rhodes

"Unit came out great and the tenant is happy. The timeline ran long, largely because of how slow the city was on plan check, though a couple of the delays were scheduling on their end."

— Elena Torres

"Every invoice was tied to a completed milestone, so I always knew what I was paying for."

— Beatriz Mendoza

How It Works in Highgrove

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu needs and we provide an upfront, transparent quote — no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Highgrove — typically within 30–60 minutes, with parts stocked on the truck.

3

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We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

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