Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Fast, Reliable Commercial Locksmith Across Hillsborough
Commercial locksmith work in Hillsborough rarely means what it means anywhere else. This town is zoned exclusively for ultra-high-end single-family estates, so a “commercial” call here is almost always an estate key-control job: restricted Medeco, Mul-T-Lock, or Abloy cylinders across a main residence, guesthouse, motor court gate, and detached garage, all needing to work under one controlled key system. Dunmore Locksmith has crews serving Hillsborough locally, dispatched from our San Francisco Bay Area office, with a live person answering the phone 24/7 at (910) 714-4287. You get a written price before any work starts, and the technician who arrives is sent to you by name and photo before the visit.
Why Dunmore Locksmith Is Hillsborough’s Preferred Commercial Locksmith Company
Hillsborough homeowners don’t hand out keys casually. Staff turnover, estate managers, contractors, and household help all create key-control questions, and the answer has to be as serious as the property it protects. Our Commercial Locksmith team works on Hillsborough estates regularly, which means we know what a 1920s Mediterranean off Black Mountain Road needs versus a mid-century custom build near Burlingame Avenue. That local familiarity matters when a job involves original mortise lock bodies, Baldwin trim, and motorized gate systems that have been fighting the marine layer for forty years.
Perry Osgood leads our crew, and the standard he set is non-negotiable: background-checked technicians, identity-verified, uniformed, photo-badged, and sent to you by name and photo before anyone touches your gate or door. Hillsborough clients expect that level of proof, and we deliver it. Every estimate is free, every price is in writing before work starts, and every repair carries the 365-Day Done Right Promise. If a repair fails, we return at no charge. That guarantee is not a marketing line; it’s stamped on the job paperwork.
Commercial Door Repair in Hillsborough
Commercial Door Repair in Hillsborough almost always involves heavy mortise lock bodies, tall custom doors, or gate hardware that has been exposed to decades of coastal fog. Many of the older Spanish Colonial Revival and Mediterranean estates in Hillsborough still carry their original mortise cases and skeleton-key hardware. Those lock bodies were built to last a century, but they need antique-compatible cylinders and careful servicing, not replacement with cheap Grade 3 hardware from a big-box store. A typical commercial-grade door repair or cylinder service on a Hillsborough estate runs $180 – $420 depending on the hardware and the condition of the existing mortise body.
Mortise Lock and Cylinder Service
Original mortise bodies on 1920s and 1930s Hillsborough homes were made with tolerances modern hardware rarely matches. We service and re-pin those in place wherever possible, cleaning decades of hardened lubricant and salt residue from the case, then fitting a restricted or high-security cylinder that preserves the original trim. Swapping an original Baldwin or solid brass mortise body for a modern cylindrical lock is never the first answer here; it’s usually the wrong answer entirely.
Gate Motor and Wrought-Iron Hardware
Motorized gate locks and wrought-iron door hardware take the brunt of Hillsborough’s marine layer. The salt air breaks down lubricant, corrodes cylinder internals, and seizes mechanisms that then get drilled by locksmiths who don’t know better. We clean and lubricate first, replace only what’s genuinely worn, and fit weather-resistant cylinders where the exposure demands it.
Master Key System in Hillsborough
A Master Key System in Hillsborough is an estate-scale project, not a single-door fix. One property may have a main residence, a guesthouse, a motor court gate, and a detached garage all on different key systems after years of ad-hoc locksmith visits and kiosk key copies. Bringing those under one restricted master key system, where no key can be duplicated without your authorization, typically runs $500 – $1,500 on a Hillsborough estate depending on the number of cylinders and the level of key control you want.
Restricted and Patented Key Control
The point of a master key system on a Hillsborough estate is control, not convenience. With Medeco, Mul-T-Lock, or Abloy restricted cylinders, a departed staff member can’t run to a hardware store kiosk and cut a duplicate. Every key is serialized, every duplication requires your signature, and you can set graduated access so a gardener’s key opens the motor court gate but not the main house. That is the difference between a key system and actual key control.
Unifying Legacy and New Construction
Hillsborough estates rarely have uniform hardware across every structure. The 1930s main house may carry heavy original mortise bodies, while the detached garage built twenty years ago has a standard deadbolt. A proper master key system in Hillsborough means servicing and re-pinning the original hardware rather than ripping it out, then fitting newer outbuildings with ANSI Grade 1 deadbolts that enter the same restricted key hierarchy. Every exterior access point ends up under one controlled program.
Trusted Brands We Service in Hillsborough
We stock and service the hardware Hillsborough estates actually use: Medeco for restricted and patented key control, Mul-T-Lock for high-security cylinders with bump-proof mechanisms, and Abloy for disc-detainer cylinders that resist picking and drilling. We also work on Schlage and Kwikset where those appear on newer outbuildings. Parts for these brands don’t always sit on a shelf in San Mateo County; we keep common cylinders, pins, and mortise components stocked so a Hillsborough call doesn’t mean waiting a week on a factory order. If you need it, we get it, and we tell you the price before we order anything.
Common Commercial Locksmith Problems We See in Hillsborough Homes
- Kiosk copies and lost key control. A previous owner or former staff member passed out convenience-store duplicates years ago, and now nobody knows who holds keys to the guesthouse, gate, or garage. We rekey every affected cylinder and move the property onto a restricted system where duplication requires your written authorization.
- Seized gate and wrought-iron hardware. The marine layer off the Pacific works into exterior lock bodies, breaks down lubricant, and leaves cylinders that feel like they’re filled with sand. We clean, lubricate, and replace only the parts that are genuinely beyond saving, which is often less than half of what a drill-first approach would replace.
- Original mortise bodies being “upgraded” by a prior locksmith. A less experienced tech swaps a perfectly serviceable 1930s mortise lock for a modern Grade 3 cylindrical deadbolt, which means drilling into original wood doors and leaving a worse lock. We reverse those mistakes by re-installing or repairing the original hardware with compatible high-security cylinders.
- Multiple access points on half a dozen different keys. Main house, guesthouse, motor court gate, detached garage, wine room, service entrance: each on its own key. We unify the property under one restricted master key system so you carry one key and control every duplicate.
Pricing for Commercial Locksmith in Hillsborough, CA
You will get a written quote on the phone before anyone is dispatched, and that is the price on the invoice. No call-out surcharge added on arrival, no “parts went up” conversation at the door. Here is what Hillsborough homeowners typically pay:
- Commercial-grade door lock repair or cylinder service: $180 – $420
- Estate-wide rekey after staff turnover: $350 – $900 depending on cylinder count
- Restricted master key system across main house, guesthouse, gate, garage: $500 – $1,500
- Mortise body rebuild with antique-compatible cylinder: $250 – $550 per lock
- Gate motor lock cylinder replacement and mechanism cleaning: $150 – $350
Each quote covers the whole job. If something changes, we call you before doing anything. Call (910) 714-4287 for a free estimate specific to your property.
We Also Serve Cities Near Hillsborough
Our crews work throughout San Mateo County and the broader Bay Area, including Hillsborough itself as well as nearby Los Angeles, San Diego, San Jose, and San Francisco. Wherever the job is, the same standard applies: written price first, technician sent by name and photo, and a live person on the phone at (910) 714-4287 whenever you call.
Serving Hillsborough, CA - Our Local Coverage Area
We’re based in the Hillsborough 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 Commercial Locksmith in Hillsborough
Yes, and this is one of the most common jobs we do in Hillsborough. We build a restricted master key system using Medeco, Mul-T-Lock, or Abloy cylinders across every exterior access point. The main house mortise bodies get antique-compatible high-security cylinders; newer outbuildings get ANSI Grade 1 deadbolts on the same restricted hierarchy. You carry one key; no duplicate can be made without your signature. Call (910) 714-4287 for a site walkthrough and written quote.
No. The original heavy mortise lock bodies on 1920s and 1930s Hillsborough homes are usually stronger than anything sold at a hardware store today. We service and re-pin the mortise body in place, then fit a restricted or high-security cylinder that works with the original trim. The skeleton-key function can be disabled or preserved as a secondary function; the security comes from the new cylinder. Replacing the original body should be the last resort, not the first instinct.
Because Hillsborough sits directly in the path of the coastal marine layer. Salt-laden fog works into cylinder internals, breaks down lubricant, and leaves a gritty paste that eventually seizes the mechanism. The fix is regular cleaning with proper solvent, replacement of worn internal parts, and fresh weather-resistant lubricant, plus cylinder caps or weather shields where exposure is worst. Drilling a seized cylinder is a shortcut that costs you more; cleaning and lubricating preserves the hardware. We include this service on most estate gate calls.
Almost never. The only time a lock must be drilled in Hillsborough is when the cylinder is already damaged beyond non-destructive entry, or when a previous locksmith used an incompatible cylinder. Our crews use non-destructive entry techniques first: picking, bumping-resistant bypass tools where applicable, and forensic rekeying. A lost key, even a restricted key, is a rekey job, not a drill job. On our gated-estate work off Black Mountain Road, non-destructive entry testing is part of the completion checklist before we hand over keys.
Yes. We integrate Schlage, Medeco, and Mul-T-Lock electronic and access-control hardware with most major alarm and smart-home platforms, including systems where the gate motor and the main house currently operate on separate controllers. The physical lock work is our domain; we coordinate with your alarm or low-voltage integrator so the access control events register properly in your existing panel or app. We quote the lock and hardware work in writing before anything is ordered.
Call Dunmore Locksmith for Commercial Locksmith in Hillsborough, CA
A Hillsborough estate deserves a locksmith who understands key control, antique mortise bodies, gate systems, and the salt air that attacks them all. Dunmore Locksmith has served the area under the Threshold Group standard since 2007, and Perry Osgood’s crews carry that name and that standard on every call. Call (910) 714-4287 for a free estimate. You will speak to a live person, get a written price before work starts, and know exactly who is coming to your door before you open it.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Hillsborough and the surrounding Bay Area.