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
Dvele Construction in Tiburon, CA | Toolbox Contractors
We provide independent Home Remodeling in Tiburon and Dvele service across the area, from panel seam repairs on hillside modules to full kitchen and bathroom remodels inside Dvele shells. The one thing that makes our Dvele work here different from a flat-lot job is that we start with slope, drainage, and view-easement documentation before we touch a single panel. If you own a Dvele home in Tiburon and something’s not right, call (855) 382-3257 and Norm Castellano’s crew will tell you exactly what you’re dealing with.

We’re Dvele sales & service specialists in the sense that we know these factory-built homes inside and out – but we are not authorized by or affiliated with Dvele, and we won’t pretend otherwise. What we are is a full-scope general contractor that has untangled Dvele envelope failures, added square footage to Dvele modules, and rebuilt Dvele interiors on the steepest lots in Tiburon service area. One contractor. Every phase.
Why Tiburon Residents Choose Us for Dvele Service
Most General Contractor in Tiburon firms have never opened a Dvele panel joint or pulled a marriage line apart. We have, and we know what’s behind the factory details: the gaskets, the seam tape, the roof-to-wall termination sequence, and where the factory spec holds up fine on a flat lot but fails fast on a view-facing hillside above Richardson Bay.
Norm Castellano grew up around houses that were always mid-project, went through the construction technology program at San Bernardino Valley College, and has spent the better part of two decades on framing, roofing, and full gut-and-rebuilds before running Toolbox Contractors. He’s the guy you call when a previous contractor left a mess that needs to be untangled before real work can start, and that’s exactly the kind of Dvele in Marin City and Tiburon homeowners end up needing. Tell me what you’ve got and I’ll tell you what it actually needs.
We carry OEM Dvele components for structural panel connections and roof assemblies where factory tolerances matter. For flashing and sealants, we stock aftermarket products rated for salt air and marine fog – because the original spec is often undersized for what the Bay actually throws at a Tiburon hillside.
Styles & brands we work with







Common Dvele Construction Problems We Solve in Tiburon
- Panel seam separation from differential foundation movement. Steep lots above Richardson Bay settle unevenly, and when the uphill corner of a module drops a quarter inch, you’ll see it as a widening seam at the marriage line or a roofline that doesn’t quite read straight anymore. That’s not a factory defect. It’s the hillside moving under the shell, and we repair the panel connection only after we understand why the foundation shifted.
- Corrosion at panel joint seals and roof-to-wall flashing. Marine fog off the Bay sits on exposed elevations for hours, and salt air eats standard flashing terminations faster than most factory specs account for. View-facing walls take the worst of it. We replace the failed detail with a salt-air-rated system so it doesn’t come back in three years.
- Water intrusion at module marriage lines during winter storms. Tiburon gets most of its rain in a few intense fronts, and when hillside lot grading hasn’t been reworked, storm runoff channels straight into the uphill foundation wall and through the marriage line. We find this constantly on lots where the original site contractor treated a slope like a flat pad.
- Wildfire-zone compliance failures on factory-standard details. The oak-and-grass hillsides above town put many Tiburon Dvele homes in WUI territory, and factory venting or roof edge details that passed original inspection sometimes don’t meet current fire-hardening standards. We upgrade vents, fascia, and edge details on site so the home actually passes the next WUI review.
- Roof-to-wall flashing failures on view-facing rooflines. Tiburon homes are designed to face the view, which means the most exposed roof edges also get the direct wind and rain load. We repair these as localized flashing or panel joint failures, and we only recommend replacement when slope movement has compromised multiple modules.
These are not generic Dvele problems. Add Tiburon’s salt air, steep drainage, and WUI rules, and the failure modes compound. That’s why the fix has to be site-specific, not a factory service bulletin.
Dvele Service in Tiburon: What Local Conditions Mean for Your Equipment
The Town of Tiburon’s design review treats second-story additions on hillside lots strictly through view-easement and slope-density rules. Any Dvele module addition or panel change that alters roofline height or footprint triggers design review and neighbor-notice requirements beyond the raw building permit. What that means for Dvele owners: before we quote an addition or a Chinatown Dvele service-style second-story rework off Lyford Drive or up in Bel Aire, we document existing view easements and current lot coverage. The panel work is the easy part. The paperwork and neighbor geometry is where the schedule actually lives.
This is the part a generic Dvele page never mentions and a generic Tiburon contractor page never connects. Flat-lot Dvele homes don’t face this sequence. Tiburon Dvele homes do, every single time the roofline changes.
Dvele Models & Products We Service in Tiburon
We work on every Dvele model family you’ll find on the Tiburon Peninsula: Dvele Core, Dvele Signature, Dvele Series custom modular builds, and Dvele ADU accessory units. Structural panel connections and roof assemblies always get OEM Dvele components, because those tolerances were set at the factory and aftermarket substitutes don’t match. Flashing, sealants, and drainage details get quality aftermarket materials rated for the salt air and WUI conditions specific to this ZIP code.
We repair when a panel joint or flashing failure is localized. We recommend replacement only when foundation or slope movement has compromised multiple modules. You won’t get a replacement pitch from us for a fixable seam.

See the difference
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AfterDvele Service Pricing in Tiburon
Here’s what Dvele interior and envelope work costs on the Tiburon Peninsula. The hillside factor pushes labor and access costs up compared to flat-lot work, but the material ranges stay consistent.
| Service | Price Range |
|---|---|
| Kitchen Remodel (inside Dvele shell) | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Repair (flashing, panel joint, WUI detail) | $400 – $1,800 |
| Walk-In Shower Installation | $4,500 – $12,000 |
What drives cost in Tiburon: slope access and staging, design review time, geotechnical sign-off when foundation work is involved, and WUI material upgrades. Our free estimate includes a written line-item quote and a site walk where Norm’s crew checks panels, foundation, drainage, and roof conditions. Call (855) 382-3257 and we’ll come look.
Serving Tiburon, CA — Our Local Coverage Area
We’re based in the Tiburon 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 – Dvele Construction in Tiburon
No. On the steep slopes above Richardson Bay, the original factory foundation spec is almost never adequate without local geotechnical review. Slope stability, drainage rework, and retaining requirements all feed the foundation design before any module is set, and on the Bel Aire and Tiburon Uplands streets specifically, the town requires that documentation as part of the permit package. If someone tells you a Dvele module can drop onto an existing Tiburon slope pad without re-engineering, walk away. Call (855) 382-3257 and we’ll tell you what your slope actually needs.
Almost certainly yes. Any module addition that changes roofline height or footprint triggers Town of Tiburon design review and neighbor-notice requirements under view-easement and slope-density rules. We start that work by documenting existing view easements and lot coverage before any panel moves. That sequence saves months on the back end, when the review board asks for exactly those documents. Call (855) 382-3257 for a free estimate and we’ll map out the full path, including the paperwork.
Salt air accelerates corrosion at panel joint seals and roof-to-wall flashing terminations, particularly on view-facing elevations that get direct marine fog exposure. The factory-spec flashing often fails in five to seven years on a Tiburon hillside when the same detail would last twenty years inland. We replace these with salt-air-rated flashing and sealant systems as part of our Dvele service scope, so you’re not paying for the same repair twice.
If your home sits on the oak-and-grass hillsides above town, yes. Factory-standard venting and roof edge details frequently don’t pass current WUI inspection in that zone, and the town enforces defensible-space and fire-hardening requirements on any roof scope. The $400-$1,800 roof repair range we quote assumes basic flashing and panel joint work; WUI vent and edge upgrades add to that depending on what the current code demands. We’ll tell you exactly what’s required before we start, and the estimate is free at (855) 382-3257.
Document the movement pattern first, before anyone opens a panel. On Paradise Cay, seam separation after winter storms usually means differential foundation movement or water intrusion through an uphill marriage line, and if you reseal the cosmetic seam without fixing the movement, it opens again next winter. We come out, check the foundation, check the drainage, and identify the root cause before any repair begins. Call (855) 382-3257 and we’ll schedule a site walk.
Service Areas Near Tiburon
We perform Dvele service throughout the Tiburon Peninsula and across the Bay Area. For Dvele homes in Marin County, we also cover Dvele service in Belvedere just southeast of Tiburon and Dvele service in Sausalito on the other side of the Richardson Bay shoreline. If you’re on the East Bay side, we can discuss feasibility depending on the scope.
Book Your Dvele Service in Tiburon Today
Call Toolbox Contractors at (855) 382-3257 and ask for Norm. We’ll schedule a free Dvele inspection, go over what’s actually wrong, and give you a written line-item quote before any work begins. One contractor, every phase, from panel seam to kitchen backsplash.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Tiburon since day one on the hillsides.