Lock Replacement & Installation in San Mateo
Deadbolts, knobs, levers and handlesets fitted from the van, $112 to $305.
$112–$305
Typical price
23 min
Avg. arrival
24/7
Availability

Replacement is right when the lock itself is finished: a bolt that no longer clears the strike, a knob that spins while the latch stays put, a keypad lock on a rental that has drained three sets of batteries and now refuses everyone, a Baywood side gate held by a hasp any hand can lift. Hillsdale Lock & Key carries deadbolts, knobs, levers and handlesets on the van, in finishes that sit alongside what is already on the door.
The tape measure comes out before the screwdriver. Door thickness, backset and bore vary more than people expect. A Spanish-revival house in San Mateo Park may carry a mortise pocket that a modern cylindrical lock cannot use without a filler plate; a 2016 townhome may have a hollow metal door that wants through-bolts. Where the existing preparation fits, a swap runs twenty to thirty minutes per door. Where it does not, the door is drilled or filled and you see the fit before the lock goes on. Keys are cut on site and matched to your other doors if you want to carry one key. A lever suits a hand that struggles with a knob, and on a rental it outlasts one.
Fitted, the range is $112 to $305 per lock with hardware included. A Grade 3 residential deadbolt is the $112 end. Grade 2 deadbolts, lever sets, a handleset with matching deadbolt, and a bore enlarged for a modern unit reach $305. The $89 service call is inside the total. Evening work adds $45 and overnight $75, both written on the work order before the van leaves. Restricted cylinders and odd door preparation are written down at the start, not found at the end.
Describe the door: a photo of the lock face and the door edge. It is written down: the figure per lock goes on the work order. The van pulls out: the name and the window come by text. Fit: measurement, removal, mounting, strike adjustment, key cutting, and a test with the door closed against compressed weatherstrip, because a bolt that throws with the door open proves nothing. The receipt matches, lock by lock, card or tap.
“Our 1928 Spanish-revival house has the original mortise lock and the front door swung shut with my keys on the hall table. $138 written down on the call. The text with the technician's name came before I had finished walking to the neighbor's porch, and the van was outside in twenty-three minutes. He picked the mortise cylinder without a mark on the brass and the card was charged $138.”
Every job is priced from the list below. The figure is written down on the call, before the van pulls out, and the receipt matches it line for line.
- Daytime (7am–8pm)standard rates
- Evening (8pm–12am)+$45
- Overnight (12am–7am)+$75
FAQ
Lock Replacement & Installation: quick answers
What grade of deadbolt belongs on a ground-floor door along El Camino?+
Grade 2, on a strike anchored into the stud. The Grade 3 sets on the hardware-store shelf are meant for interior doors and bedroom privacy, not for a door that opens onto a shared walkway. Grade 1 is worth its price on a door that has already been forced once, and rarely elsewhere in a house.
I bought the lock myself at the hardware store on 25th Ave. Will you fit it?+
Yes, labor only, written on the same call. The technician says straight away whether it suits the door's preparation, not after the old one is off. The box, the packaging and the spare keys stay with you.
The hardware on our Baywood house is original. Will a new lock look wrong?+
Not if it is chosen for the door. Several current lines come in the rosette sizes and the oil-rubbed bronze and aged brass finishes those houses used, and a mortise set can be replaced with a mortise set rather than a bored lock. Bring one of the old knobs to match against. If the door has never been bored for a deadbolt, that hole is cut in the same visit and shown to you before the lock goes in.
Related
More residential services
24/7 — nights, weekends & holidays
One call, one figure on the work order, the same figure on the receipt
Calls answered 24/7 across San Mateo and the towns beside it. The $89 service call, the labor and the parts are inside the number written down on the call, and the receipt matches it line for line.