★★★★★
Locked myself out of the office on a Sunday morning at Sierra Point. They picked up, were straightforward about timing, and got me back in without damaging the door. Will keep them on speed dial.
One key for the building manager. One for each tenant suite. One for the janitorial closet that opens nothing else. We design and install master key hierarchies that match the way your business actually runs.
A master key system is a hierarchy of keys with different access levels — all working off the same underlying pinning scheme. Designed right, one key opens everything you need it to; nothing you don't. Designed wrong, you've got 47 keys on a ring and no idea which one does what.
The Grand Master Key (GMK) operates every cylinder in the system. Below that, Master Keys (MK) operate logical groups — usually by building, floor, or department. Below those, Sub-Masters operate sub-groups within a master. At the bottom, Change Keys (CK) operate one cylinder each. Every key cylinder has master pins that let multiple keys operate it correctly.
Multi-floor offices with one building manager who needs total access plus floor-level masters for facilities. Retail spaces where the corporate office holds the GMK and each store manager holds a Change Key. Schools where principals hold a master, teachers hold floor-level keys, custodial holds a sub-master, and individual classrooms have change keys. Multi-tenant buildings where each tenant's own internal hierarchy is a sub-master, and the building manager holds the GMK.
If your hardware is in good condition, we can usually rekey existing cylinders into a new hierarchy — no need to replace knobs, levers, or deadbolts. If your hardware is mixed (multiple manufacturers, multiple keyways), we'll either standardize on one keyway or design around what's there. We'll be honest about which makes more sense for your building.
For high-security properties we install restricted keyway cylinders. Keys can only be cut at registered locksmiths with documented authorization — they can't be copied at a hardware store or online. We keep an authorization list per system; you tell us who's allowed to request copies.
We design the hierarchy with you before we cut anything. You decide who needs GMK access (usually 1-2 people), who needs MK access (department heads, facilities), who needs sub-master access (shift leads, IT for server rooms), and who gets a change key (everyone else). We document it; you keep the document.
(628) 250-3419Every call goes to the people who'll do the work. California-licensed, bonded and insured, family-run, based in Brisbane. We started in 2024 and earned our 4.9-star rating one job at a time.
You'll always reach the same family-run team. Same techs, same accountability — every time you call.
We're a mobile locksmith. Keys cut on-site, locks rekeyed in your driveway — we bring the shop to you.
Verified Google reviews from across the Peninsula and San Francisco — every one of them earned.
California-licensed locksmiths. Bonded and fully insured. Google Guaranteed through Local Services Ads.
Recent Google reviews from customers across the Peninsula and San Francisco. We earned each one — one job at a time.
Locked myself out of the office on a Sunday morning at Sierra Point. They picked up, were straightforward about timing, and got me back in without damaging the door. Will keep them on speed dial.
We had them set up a master key system across two floors of our office on the Genentech corridor. Thorough, professional, and the documentation they left us is exactly what facilities asked for.
Brand new house in Daly City. Wanted everything rekeyed and a smart lock installed on the front door. They walked me through options honestly — never pushed me into the most expensive thing.
A few seconds of calm makes a real difference. Here's what works, what doesn't, and what to expect from us the moment you call.
Damaged locks cost more to replace than the lockout itself. Step away from the door — we'll handle it.
Tell us your address and what's locked. We'll quote you on the phone — no surprises when we arrive.
Car lockout in a parking lot or on the street? Stay near a well-lit area. A building lobby is fine too.
We'll confirm an ETA with you by call or text before we leave. No ghosting, no mystery wait.
Outside our listed hours? Call anyway — we respond to emergency calls outside hours when we can. We'll be honest about timing the moment you call.
Questions we get a lot for master key systems jobs. If yours isn't here, call — we'd rather have a quick conversation than guess wrong.
Emergency response available outside listed hours when possible. Call and we'll be honest about our soonest availability.