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 Bonny Doon
If you’re planning a rebuild, remodel, or new structure in Bonny Doon, you already know this isn’t a standard construction market. Building here means county permitting on nonconforming lots, septic and well setbacks that shape the entire design, WUI fire code on every assembly, and roads that make material delivery its own project. A general contractor in Bonny Doon has to scope those realities before quoting, not after. That’s how Toolbox Contractors works. Call (855) 382-3257 for a free estimate that accounts for your actual site conditions, not a generic square-foot number.
Why Toolbox Contractors Is Bonny Doon’s Preferred General Contractor Company
We’ve walked dozens of post-CZU parcels in Bonny Doon where the foundation survived but nothing above it did. That changes how you bid. Before we quote a rebuild, we confirm septic capacity and well yield, because on burned-over land those systems often outlast the house, and their limits dictate what you can legally build. We also check whether the lot is nonconforming under current county rules. Re-permitting to today’s WUI code is a line item we surface up front, not a change order we bury mid-job.
Our clients in Bonny Doon come to us because one contract covers the entire scope. A rebuild off Empire Grade might need fire-resistant siding, a Class A roof assembly, new windows rated for wildland exposure, and a retaining wall to stabilize the cut slope. That’s one General Contractor managing the whole thing, not four trades pointing fingers. Norm Castellano leads our team, and he’s the one who walks your punch list before final inspection.
Styles & brands we work with







General Contractor Services in Bonny Doon
General Contractor Services in Bonny Doon start with reading the parcel before reading the plans. A kitchen remodel in a redwood cabin off Pine Flat Road is not the same job as a kitchen remodel in a Scotts Valley tract home. Here, you’re working around pier foundations, steep access, and county setbacks for well and septic lines. That constraints design, and it absolutely moves the price. A full kitchen remodel in Bonny Doon typically runs $14,000 – $45,000, with a smaller footprint landing at $9,000 – $20,000. Cabinet installation adds $4,000 – $13,000, countertops $2,000 – $6,500, and a kitchen island between $3,000 and $10,000 depending on whether it needs plumbing or electrical run across a crawlspace.
Remodels on Rural Parcels
We’ve remodeled bathrooms in Bonny Doon homes where the subfloor had rot from thirty winters of mountain moisture and the vanity had to be reframed around a drain line that ran the wrong direction. A bathroom remodel here spans $9,000 – $28,000, with small baths running $5,000 – $12,000, a walk-in shower $4,500 – $12,000, and a tub-to-shower conversion $3,500 – $10,000. We price the framing and drainage work before we price the tile, because that’s what actually determines the final number.

Structural Repair and Rebuild Scopes
Bonny Doon homes skew older and owner-built, which means we regularly find decks bolted to stucco, piers out of level, and roof framing that was never engineered for snow load or high wind. A deck construction or replacement on a sloped lot often requires poured piers, lateral bracing, and a drainage plan, and we build that into the quote instead of discovering it after demo.

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.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Construction Company in Bonny Doon
Construction Company work in Bonny Doon isn’t a flat-rate business. A home addition off Empire Grade means the same county review as a full rebuild, because additions change septic demand and fire-defensible space calculations. A home addition in Bonny Doon runs $45,000 – $130,000, and a garage conversion $30,000 – $80,000. ADU construction sits at $90,000 – $220,000 for a detached unit on a wooded parcel, which includes the site work, fire-resistant exterior assemblies, and utility runs that suburban ADUs skip. Roof replacement in Bonny Doon runs $8,000 – $20,000, and window replacement $4,500 – $15,000 when you’re switching to dual-pane units rated for wildland exposure.
Detached ADUs and Shops
Bonny Doon’s zoning allows detached ADUs and shop buildings on acreage, but the county requires septic system reviews, well-setback confirmation, and Chapter 7A exterior materials before any foundation goes in. We handle that paperwork as part of the scope. Our prefab and ADU partnerships with Abodu, Dvele, and Boxabl give Bonny Doon owners a faster path on parcels where long material hauls make stick-built framing painfully slow.
Roof, Window, and Envelope Upgrades
Fire-hardening a Bonny Doon home means the roof, windows, siding, and vents all have to work together. We install GAF, CertainTeed, and Owens Corning roofing systems, PGT and CGI impact-rated windows, and James Hardie fiber-cement siding. We sequence the envelope work so the county’s WUI inspector sees one coordinated assembly, not four separate retrofits.
Trusted Brands We Service in Bonny Doon
We stock and install from a curated set of brand-name materials that hold up in Bonny Doon’s coastal-mountain climate, not a generic catalog of whatever the supply house had on the shelf. For fencing on rural lots, we install Master Halco and Ameristar systems, with Barrette and Jerith options for ornamental and privacy runs. For the interior, homeowners choose from KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone countertops, and Kohler or Moen fixtures. We order local parts for Bonny Doon customers and stage deliveries around your road’s access constraints, because a truck that can’t turn around costs the project a day.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Bonny Doon Homes
- Septic capacity surprises. The house burns or gets torn down, the septic stays. If the tank is rated for two bedrooms and the rebuild is three, the county won’t issue the permit until the system is upgraded or the design shrinks.
- Nonconforming lot re-permitting. Many Bonny Doon parcels were built to a standard that no longer exists. Rebuilding what was there often triggers current WUI and setback requirements, and we scope that before quoting.
- No truck turnaround on remote roads. Concrete pours, framing deliveries, and roof tear-offs all need equipment that’s longer than the road was built for. We stage material at turnouts and sequence deliveries against the project’s draw schedule.
- Steep-slope drainage failures. Heavy atmospheric-river rains on saturated mountain soils move water fast. Retaining walls, French drains, and site stabilization need to be in the rough-in phase, not added after the first winter.
Pricing for General Contractor in Bonny Doon, CA
Bonny Doon pricing reflects the site. A flat quarter-acre parcel in Santa Cruz prices differently than a wooded hillside off Empire Grade with a well on one corner and a septic field on the other. Here are the ranges we quote against for Bonny Doon work:
| Project | Bonny Doon Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Roof Replacement | $8,000 – $20,000 |
| Window Replacement | $4,500 – $15,000 |
The variables that move you within those ranges are site access, septic and well constraints, WUI material upgrades, and slope stabilization. We give you a written line-item quote before work starts, and we walk the property before we write it. Estimates are free.
We Also Serve Cities Near Bonny Doon
Our crews work Bonny Doon parcels as well as the surrounding mountain and valley communities. We regularly take on projects in Mount Hermon, Felton, Pasatiempo, and Ben Lomond. If you’re in the Santa Cruz Mountains and need a General Contractor in Bonny Doon who understands county permitting and WUI code, we can help.
Serving Bonny Doon, CA — Our Local Coverage Area
We’re based in the Bonny Doon 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 Bonny Doon
A Bonny Doon rebuild runs higher on the front end because the county requires septic capacity confirmation, well yield verification, WUI fire code compliance, and often re-permitting on a nonconforming lot before the first inspection. Call (855) 382-3257 for an exact quote once we’ve walked your parcel and reviewed your septic and well records.
Yes, Bonny Doon zoning generally allows detached ADUs and shop buildings, but the county will require a septic system review, well setback confirmation, and Chapter 7A fire-resistant exterior materials before foundation work starts. We handle that scope and the paperwork as part of the contract.
California Chapter 7A applies to most Bonny Doon rebuilds and major additions, requiring Class A roofing, fire-resistant siding, dual-pane or impact-rated windows, and ember-resistant vents across the envelope. We scope those assemblies into the bid rather than flagging them mid-construction.
We survey the turnout and turnaround space before we order a concrete truck or framing package, then stage deliveries at the nearest accessible pullout and sequence material against the draw schedule. A remote Bonny Doon road doesn’t stop the project, but it does change how we schedule it, and that’s priced up front.
We walk the parcel, pull septic and well records, run the design against current WUI and setback codes, then issue a written line-item quote. After that, we build to the scoped plan and walk the final punch list with you before the county’s final inspection sign-off.
Ready to talk about your Bonny Doon project? Call (855) 382-3257 and we’ll schedule a site walk, review your parcel’s septic and well constraints, and put a real number on the scope.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Bonny Doon and the Santa Cruz Mountains.