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Mr-Glass Construction in Hillsborough, CA | Toolbox Contractors
We provide independent Mr-Glass service across Hillsborough, from frameless shower enclosures in mid-century estate bathrooms to window replacements on hillside rebuilds. What makes our work here different is that we treat every Mr-Glass enclosure and window spec against the town’s design-review process and the yard-by-yard reality of flats versus wooded slopes. One street in Hillsborough deals with drainage and settling on the lower flats while the next climbs the eastern slope with retaining walls and fire-hardened exteriors, and we plan Mr-Glass work accordingly. Call (855) 382-3257 for a free estimate.
Why Hillsborough Residents Choose Us for Mr-Glass Service
We’ve spent years installing and repairing Mr-Glass sales & service enclosures, windows, and shower systems across the Peninsula, so we know how these units behave in Hillsborough’s large-lot estates and hillside rebuilds. We work as an independent shop, not as anyone’s authorized agent. That matters when a Mr-Glass panel binds at the hinge, a seal fails along the sweep, or a unit needs re-templating to a wall that moved. We diagnose the actual cause rather than selling a replacement first.
Norm Castellano, our owner, came up through construction technology training and then spent close to two decades doing residential framing, roofing, and full gut-and-rebuilds before starting Toolbox Contractors. He’s the guy who untangles messes left by previous contractors before real work starts. Tell me what you’ve got and I’ll tell you what it actually needs. That’s how we approach every Mr-Glass in Burlingame and Hillsborough job, whether it’s a simple re-seal or a full tub-to-shower conversion with new glass.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in Hillsborough
- Hillside racking and binding frameless panels. Sloped-lot homes and mid-century rebuilds settle unevenly, so a frameless Mr-Glass panel that was square at install binds at the hinge and the door swings into the fixed panel instead of closing cleanly. We re-level the curb, replace the worn hinge, and re-template the panel to the as-built wall.
- Out-of-square rough openings in older estate bathrooms. The original alcove was never plumb, and a stock Mr-Glass door leaves an uneven reveal with water escaping at the sweep. We shim, re-hang, and re-seal rather than forcing a bad fit.
- Hard-water and mineral etching on frameless glass. Hillsborough estate bathrooms with heavy fixture use cloud Mr-Glass panels long before the glass itself is compromised. We polish what’s salvageable and tell you straight when a panel is gone.
- Failed seals and corroded hinges on sliding systems. Winter damp and coastal fog reach the track, causing rollers to seize and doors to jump the guide. We replace OEM rollers, sweeps, and seals where the model is still supported.
- Window and patio-door replacements that need town approval before install. Every exterior change in Hillsborough runs through the town’s own architectural review, so the Mr-Glass spec has to be documented before approval, not adjusted in the field afterward.
Mr-Glass Service in Hillsborough: What Local Conditions Mean for Your Equipment
Hillsborough’s buildable land spans both the flats near the town center and the steep wooded upper lots on the eastern slope of the Santa Cruz Mountains. Because every exterior change runs through the town’s own architectural review rather than a generic county counter, a Mr-Glass window or enclosure spec has to be documented before approval. That means we don’t swap a window size or move a shower wall on the fly. We measure, document, and submit what the town needs to see, then install exactly what was approved. On a sloping upper lot off a wooded hillside street, our crew re-hung a Mr-Glass repair in Highlands-Baywood Park frameless enclosure that had been binding for a year: the curb and wall had settled slightly on the graded foundation, so the pivot door no longer cleared the fixed panel. We re-leveled the curb, replaced the worn OEM pivot hinge, re-templated the fixed panel to the as-built wall, and re-sealed the sweep. The door now closes on its own weight, and we noted the drainage slope on the adjoining tile so the next winter rain wouldn’t undo the fix.
Mr-Glass Models & Products We Service in Hillsborough
We handle Mr-Glass service in San Mateo and Hillsborough, including frameless shower enclosures in hinged and pivot door configurations, sliding and bypass shower door systems, custom mirror and glass partition units, and Mr-Glass window and patio-door replacements in wood and vinyl-clad frames. We match OEM Mr-Glass hinges, rollers, sweeps, and seals where the model is still supported, and use quality aftermarket hardware only where OEM is discontinued or genuinely inferior, never to shave cost on a load-bearing hinge. Our honest stance: re-seal, re-hang, and re-plumb first; replace only when the glass is etched beyond polishing or the opening has moved enough that no hinge adjustment will hold.
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AfterMr-Glass Service Pricing in Hillsborough
Here are the market-calibrated ranges for the Mr-Glass work we do most often in Hillsborough. Your exact number depends on the opening condition, glass type, hardware replacement needs, and whether the town’s design review adds documentation steps.
| Service | Price Range |
|---|---|
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| Window Replacement | $4,500 – $15,000 |
| Bathroom Remodel | $9,000 – $28,000 |
A free estimate includes a look at the existing Mr-Glass unit, the rough opening or curb condition, and what the town review process will require for your specific Hillsborough lot. Call (855) 382-3257 for an exact quote.
Serving Hillsborough, CA — Our Local Coverage Area
We’re a General Contractor in Hillsborough and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Mr-Glass Construction in Hillsborough
Yes, for any exterior window or door change in Hillsborough, you need architectural review approval before the work starts. Interior shower enclosure work typically does not trigger design review unless it involves moving walls or changing plumbing. We document the Mr-Glass spec and handle the submission steps so the approval matches what we actually install. Call (855) 382-3257 to discuss your specific project.
On sloped Hillsborough lots, the foundation and framing settle unevenly over time, which racks the curb and wall the Mr-Glass enclosure was templated to. The pivot door then binds at the hinge and drags on the fixed panel. We re-level the curb, replace the worn hinge if needed, and re-template the panel to the as-built opening. Call (855) 382-3257 for a binding-diagnosis visit.
Yes. We always test-polish the etched areas first. If the mineral staining has not deeply compromised the glass, we restore the panel and replace only the failed seals or hardware. If the etching has gone too deep, we’ll tell you that straight and quote the replacement glass. Call (855) 382-3257 for a free glass evaluation.
We can. Mid-century Hillsborough bathrooms often have stud layouts and wall substrates that were not designed for the point loads of a frameless glass panel. We verify blocking, add reinforcement if needed, and specify anchor and hinge spacing that holds the panel safely on your as-built wall. Call (855) 382-3257 for an anchoring assessment.
We do. One contract covers the tub removal, pan or curb build, waterproofing, tile, plumbing trim, and the new Mr-Glass enclosure. No separate glass sub, no finger-pointing between trades. Call (855) 382-3257 for a combined quote.
Service Areas Near Hillsborough
We serve Hillsborough service area plus nearby Peninsula and Bay communities. We also run Mr-Glass service in Mr-Glass service in El Granada on the coast and in Mr-Glass service in Millbrae to the north. If your property sits outside the 94010 ZIP, call and we’ll confirm coverage.
Book Your Mr-Glass Service in Hillsborough Today
If your Mr-Glass enclosure is binding, your sliding door jumps the track, or you’re planning a shower remodel that needs a spec the town will approve, call (855) 382-3257. Estimates are free, and Norm will tell you exactly what the job actually needs.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Hillsborough and the Peninsula since starting the company.