Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across North Tustin
Finding a General Contractor who understands North Tustin’s unincorporated Orange County rules takes more than a quick Google search. We work on acreage properties here every month, from Cowan Heights to Lemon Heights, and we know that every grading plan, retaining wall, and fire-zone detail goes through OC Planning and OC Fire Authority, not the City of Tustin. That local knowledge keeps your permit moving and your budget honest. If you’re planning a room addition, an ADU, or a major remodel on a half-acre-plus lot, call (833) 467-4091 for a free estimate from a contractor who already knows the territory.
Why Ashbury Contractors Is North Tustin’s Preferred General Contractor Company
Noel Quintero built Ashbury Contractors around a simple idea: one contractor, every trade. For North Tustin homeowners, that means one point of contact for everything from kitchen remodels to roofing, windows, fencing, and detached ADUs. We specify the product before we quote the price, so you know exactly which Cambria quartz or GAF roofing system you’re paying for before you sign anything.
Our North Tustin work keeps growing because we handle the parts other contractors hand off to subs. Exterior envelope details matter on these hillside lots, where Santa Ana winds and fire-zone requirements push you toward non-combustible siding, fire-resistant vents, and proper drainage. We carry those decisions ourselves instead of losing control in someone else’s schedule. When a Cowan Heights client asked us to tie a detached ADU into an existing septic system, our team caught that the 1950s ranch’s original electrical panel couldn’t carry the load. We upsized the service, added a non-combustible vent path for WUI compliance, and closed out with a punch list that included re-seeding the disturbed slope before winter rains. That’s the kind of scoping that keeps North Tustin projects on budget.
From the foundation to the fence line, you deal with one contract and one warranty conversation. Call (833) 467-4091 and we’ll put together a written line-item quote for your North Tustin property.
Styles & brands we work with







Construction Company in North Tustin
A Construction Company serving North Tustin has to treat every project like the county will inspect it twice, because it often does. Building on acreage here means Orange County plan checks for grading, retaining walls, septic setbacks, and fire-zone exterior details. We scope for those before we quote, so your home addition or detached structure doesn’t stall at the permit counter.
A typical home addition in North Tustin runs $45,000 to $130,000, depending on foundation requirements, structural tie-ins to older framing, and the site work the county requires. That range reflects what we actually see on these hillside and canyon-edge lots, not a spec-home number from a flat city tract.
Additions and Detached Structures on Acreage
Room additions on 1950s to 1980s ranch homes usually need foundation upgrades and panel upsizing before we can tie new framing into the old structure. If you’re adding an ADU, expect septic and well setback reviews to drive the siting decision. We run those checks early with the county so the leach field or well casing doesn’t land inside your proposed footprint and trigger a change order mid-rough-in.
Grading, Retaining, and Fire-Zone Planning
North Tustin’s Cowan Heights and Lemon Heights lots often sit on graded pads with canyon-edge retaining walls already flagged in prior permits. Because the area is unincorporated Orange County, every grading plan and wall goes through OC Planning and OC Fire Authority. We coordinate those plan checks with your building permit so you don’t find out about a defensible-space redesign after excavation starts.
Remodeling Contractor in North Tustin
A Remodeling Contractor in North Tustin works on homes that were built when panel sizes, roof pitches, and plumbing rough-ins were completely different than today’s code. Most of the remodels we quote here involve original electrical panels, flat or low-pitch roofs, and plumbing that’s been in service since the Eisenhower administration. Our job is to modernize without pretending the old bones won’t matter.
Kitchen remodels in North Tustin typically run $14,000 to $45,000, and bathroom remodels range $9,000 to $28,000. Those are real numbers for this market, where cabinet runs are often longer than a tract home’s and island layouts sit on lots large enough to justify the square footage. We name the brands before we quote, so a Kohler faucet or Cambria countertop is in the line item, not a surprise later.
Whole-Home and Phased Remodels
Many North Tustin homeowners phase a whole-home remodel over two to three years: kitchen first, then baths, then the exterior envelope. We build each phase to the standard of the brand you select, and keep the permit history clean so later permits don’t get hung up on earlier unpermitted work.
Exterior Envelope and Hardscaping
On these large lots, a remodel rarely stops at the back door. Roofing, windows, fencing, and paver driveways are part of the same property transformation. We handle those trades directly, including a GAF or CertainTeed roof system, PGT or CGI impact windows, and Belgard or Techo-Bloc pavers, so the whole job moves under one contract.
Trusted Brands We Service in North Tustin
We stock common parts and finishing materials for the brands North Tustin homeowners keep asking for. Our partnerships cover over 50 product lines, and on your project we’ll spec products like Sakrete concrete mixes for foundation and hardscape work, plus ADU and prefab structure options from Abodu, Cover, and Dvele. That last part matters here because so many North Tustin lots can support a detached structure, and prefab ADU manufacturers with county-compliant plans can shorten your permit path significantly. We specify the product before we quote the price, so there’s no mystery in the material allowance line.
See the difference
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After
Before
After
Before
AfterCommon General Contractor Problems We See in North Tustin Homes
- Filing with the wrong agency. North Tustin is unincorporated Orange County, so grading, fire-zone, and building permits go through OC Planning and OC Fire Authority, not the City of Tustin. Contractors who file with the city stall the permit and often get sent back to redesign retaining walls or defensible-space details.
- Septic and well setbacks surprising the budget. On half-acre-plus lots, a leach field or well casing can sit exactly where you wanted the ADU. That triggers a redesign and a change order mid-rough-in if nobody checked the health department records before quoting.
- Electrical panels from the 1950s can’t carry modern loads. Original panels on these ranch homes rarely support a new kitchen, an EV charger, or a detached ADU without an upsized service. We catch that in scoping, not during rough-in.
- Long unpaved driveways push delivery costs up. Many North Tustin homes sit far off the main foothill roads, behind long unpaved drives. Crane and forklift access, concrete truck turnaround, and material staging all change when equipment has to crawl up a hillside path. We budget for that before breaking ground.
Pricing for General Contractor in North Tustin, CA
North Tustin pricing reflects the acreage. County plan checks, septic and well reviews, longer material hauls, and fire-zone exterior details all add line items you won’t see on a flat Tustin tract-home quote. Here are the ranges we quote most often for this area:
| Project | North Tustin Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
What moves a project within those ranges? Foundation conditions on 1950s to 1980s ranch homes, septic and well setback compliance on acreage, whether we’re tying into an existing retaining wall or building new, and how far materials have to travel up a private drive. We give you a written line-item estimate before we start, and the number we quote is the number we honor. Call (833) 467-4091 to schedule a free estimate for your North Tustin project.
We Also Serve Cities Near North Tustin
Our crews run from Tustin and Orange through Villa Park and Santa Ana, so if your property is on the border or you’re managing a rental nearby, we can help there too. Our North Tustin projects get priority scheduling because we’re already working the foothill corridors. Call (833) 467-4091 and tell us what you’re planning.
Serving North Tustin, CA — Our Local Coverage Area
We’re based in the North Tustin 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 General Contractor in North Tustin
You need Orange County permits, not City of Tustin permits, because North Tustin is unincorporated Orange County territory. Building, grading, retaining wall, and fire-zone plan checks all go through OC Planning and OC Fire Authority. Even though your address carries the 92711 ZIP, that’s a P.O. box delivery ZIP, and the county, not the city, is your permitting authority. Call (833) 467-4091 and we’ll confirm exactly which county plan checks your specific project triggers.
Septic and well setbacks can add $5,000 to $15,000 or more to an ADU project if the county requires a percolation test, a revised leaching area, or a foundation shift to keep the structure clear of the well casing and leach field. On a Cowan Heights lot with an existing septic system, we’ve seen the county require a percolation test and a revised grading plan before issuing the building permit. We check health department records and set back distances before we quote, so that cost is in the estimate, not a change order later.
Most North Tustin hillside properties fall inside a Wildland-Urban Interface fire zone, which means non-combustible exterior details, fire-resistant roofing and vents, and defensible-space planning are part of the permit package. OC Fire Authority reviews these details alongside your building plans. We spec Class A roofing, ember-resistant vents, and appropriate siding so your remodel doesn’t get kicked back at plan check. Call (833) 467-4091 for a project-specific rundown.
Yes, and we do it regularly on Cowan Heights and Lemon Heights lots where canyon-edge retaining walls are already flagged in prior permits. A revised grading plan is usually required before the county will issue a building permit, and drainage design has to account for intense winter rain over fire-scarred slopes. We coordinate the grading plan, the retaining wall details, and the building permit as one package, then close out with slope stabilization so you’re not dealing with erosion next winter.
Long unpaved driveways off the main foothill roads add staging and delivery time to your schedule, sometimes one to three extra days depending on equipment access. Concrete trucks, crane picks for roof trusses or prefab ADU modules, and forklift runs all move slower on a hillside path than on a flat street. We build that time into the schedule and the delivery allowance up front. Call (833) 467-4091 to get a project timeline that accounts for your specific access.
Written by Noel Quintero, Owner at Ashbury Contractors, serving North Tustin and surrounding Orange County communities.