Rekey Locks in Monrovia and Carry One Key for Every Door

Rekey Locks in Monrovia: what to expect

Rekeying solves one problem very well: keys you can't account for. Locks rarely fail in a way that lets strangers in; keys simply drift. A roommate copies one for a girlfriend, a contractor keeps a spare after the job, a former tenant finds an old key in a junk drawer two years later. None of that shows up on the door. That's why the best reasons to rekey locks in Monrovia are events rather than symptoms. Moving into a home or rental, losing a key ring, watching a roommate or partner move out, turning over a rental unit, finishing a remodel, ending a caregiver arrangement and recovering from a break-in all change who might hold a working key. A rekey changes the internal pins of your existing cylinders so every earlier key, including copies you never knew about, stops turning them. Your knobs, levers and deadbolts stay on the doors. If you can't write down the name of every person with a key to your place, treat that as the signal. The visit takes a fraction of the time and cost of new hardware, and it's the natural moment to put every door on one key.

What we can do on-site

• Lost or stolen key rekeys. A lost key with nothing linking it to your address is low risk. A stolen purse holding your driver's license, or a car taken from the driveway with the house key on the ring, is not. In that second case we move the visit up, rekey locks at every door that key opened, and cut replacements.
• Ex-roommate, partner and family changes. When a roommate moves out or a relationship ends, getting a key back doesn't prove there are no copies. We rekey the shared doors so only current residents' keys work, and we do it discreetly. Bring proof that you live there or own the home; if you rent, we can coordinate with your landlord.
• Tenant turnover rekeys for landlords. Between move-out and move-in, we rekey each unit's entry knob, deadbolt and any keyed patio or garage door so the departing tenant's copies stop working. Property managers in Monrovia get a tidy record of new keys by unit, and we schedule around cleaners, painters and the walk-through inspection.
• Estate, vacant and inherited properties. After a parent passes or moves into care, keys to the family home tend to be scattered among relatives, neighbors and service providers. Executors and trustees in Monrovia often rekey locks as a first step, so the house, its contents and the paperwork inside stay controlled until it's sold or occupied.
• Garage entry, gates, padlocks and outbuildings. Detached garages, casitas, pool equipment gates and RV gates are common on larger lots, and each one is another key on someone's ring. We can rekey outbuildings to match the house, or keep them on a second key if a gardener or pool tech needs access you don't want extended to the front door.

What's different about Monrovia

Commuters tend to discover lost keys far from home: at a park-and-ride, on a train platform, at the office. If a house key went missing with anything showing your address, rekey locks before you sleep there another night if possible. We start at 6:30 a.m. every day, which helps when a lost key surfaces on an early run along Colorado Boulevard.

Apartment renters should know the rules before calling. Many Monrovia complexes run master keyed systems, so a tenant rekey can break the manager's emergency access. Ask management to rekey the unit at move-in or after a roommate leaves; if they approve outside work, we'll key your unit to fit their system or give them a copy. We confirm the lease and the approval before touching the door.

Small offices in older downtown buildings often run on keys that predate the current tenant. When an employee leaves, a partner exits or a business moves into a suite, rekey the suite entry, back door and any interior offices that hold files or cash. If the building owner controls a master key system in Monrovia, we coordinate with them so your rekey fits their system.

Example situations

Two roommates in a duplex a few blocks off Myrtle Avenue split up. One moves out and says he returned his key, but the other is not sure. We verify ID and the lease, and with the landlord's okay, we rekey the front door, back door and shared laundry closet to a new key. We cut two keys, test each lock, and leave a small card listing the doors that changed. The old key becomes a keepsake with no door to open.

• Picture new buyers handed a ring of seven keys at closing, two of which fit nothing. The house has a Schlage deadbolt, three Kwikset knobs and a no-name lever on the garage entry. They'd rather replace two pieces than three, so we install a Kwikset deadbolt and a matching garage lever, rekey everything to one new key, and cut four copies.
• A typical post-remodel call: a kitchen and bath renovation wraps up after four months, during which the crew used a lockbox key and the homeowner handed two more copies to subcontractors. Once the final inspection signs off, we rekey every exterior door and the garage entry, and the homeowner pulls the lockbox off the hose bib that same afternoon.
• Say a commuter's backpack is stolen from a car at a park-and-ride. Inside were house keys, a garage remote and a wallet with a driver's license, so the address is now in the wrong hands. We get the call that afternoon, verify residency with a passport and a utility bill, and rekey all four exterior cylinders while the owner clears the opener's memory.

From your call to the finished job

1. Tell us why you're rekeying. On the phone we'll ask how many doors take a key, what brand names appear on the lock faces, and whether you still have a working key. With that, we can quote a realistic figure and load the right pins and blanks before we head to Monrovia.
2. Confirm who's authorizing the work. Before any lock comes off a door, we confirm you have the right to rekey it: ID plus a deed, closing statement, lease, utility bill or management agreement. It protects you as much as anyone, because the same rule keeps a stranger from rekeying your house.
3. Agree on the keying plan. Next we settle the keying: one key for everything, or separate keys for the house and outbuildings. We check each cylinder's keyway first. If one lock won't match the rest, you choose between a second key and replacing that lock before we begin.
4. Re-pin each cylinder. Each cylinder comes out of its lock, gets new key pins sized to the new key, and goes back in. Your hardware stays on the door, and the latch and bolt keep working the way they always did. Tired springs or worn pins are replaced as we go.
5. Test every key in every door. We test each new key in each lock with the door open, then closed, so the deadbolt throws fully into the strike without binding. A key that turns easily on the bench but drags on the door usually points to strike alignment, which we adjust on the spot.
6. Hand over keys and a key list. You receive the number of keys you asked for, cut and tested, plus a written note of which doors they operate. We suggest recording who gets each copy. The old keys can go straight in the trash, since they no longer fit any lock on the property.

Pricing factors

• Keying plan and number of keys. Want the house key to open the side gate padlock and the shed? Adding outbuilding locks now is usually cheaper than buying keyed-alike replacements later, but some padlocks can't be re-pinned and must be swapped. We'll price both routes so you can decide.
• Lock condition. Rekeying a lock that's on its last legs means paying twice. If a knob's return spring is broken or a deadbolt's bolt is chewed up, we'll say so plainly, suggest replacing that piece, and key the new lock to match everything else on the property.
• Timing and travel. Late-evening and same-day visits are possible on many days we're open, depending on how full the schedule is. Booking a turnover or move-in rekey a few days ahead gives you the widest choice of times, especially near the end of the month in Monrovia.

Every job gets a clear quote before any work starts. Call (951) 903-3193 with the details and we'll tell you what to expect for your situation in Monrovia.

What not to do

• Buying a DIY rekey kit for a house with mixed brands. Kits fit one brand and one keyway, and SmartKey resets can jam if the key comes out at the wrong moment. A half-finished rekey often leaves a door that no key will open at all.
• Keying everything alike, then giving the gardener or pool tech the house key just to reach the side gate. If someone only needs the yard, keep that gate on a separate key or a combination padlock instead of extending them full access to the house.
• Trusting that you received every key. Sellers hand over whatever they find in a drawer, not what they gave a cleaner six years ago. Former tenants return one copy and forget the spare in their car. The count you're handed is rarely the count that exists.

What to do before we arrive

• Landlords: schedule the rekey after the move-out walk-through and before the new tenant receives keys, and never hand an incoming tenant an old key just for a day. While the unit sits empty, also confirm the window locks and deadbolts all work.
• Rekey the day your situation changes. The best moment is the day you get possession, the day a roommate's last box leaves, or the day you realize keys are gone. Every day in between is another day an unknown copy still opens your door.
• Keep cylinders smooth after a rekey with a dry lubricant made for locks, such as graphite or a PTFE spray, once or twice a year. Skip oil-based sprays; they attract the fine dust that Santa Ana winds push into keyholes and gum up fresh pins.
• If you use a smart lock, remember that rekeying covers only its backup key cylinder. Delete old user codes, revoke app access for anyone who has moved on, and change the admin or programming code. Schlage Encode, Kwikset Halo and Yale Assure all handle this through the app or keypad.

Service in Monrovia

Monrovia is about 44 miles from our San Bernardino base, roughly 48 minutes in light traffic via University Parkway to SR-210 West. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment.

Stuck on the shoulder or in a parking lot along Fifth Avenue? Get somewhere safe, turn on your hazards, and give us the nearest exit or business so we can find the car without guessing.

About Monrovia: Monrovia Canyon Park, known for its year-round waterfall, closed after the 2020 Bobcat Fire and later storm damage, then reopened on June 26, 2025.

Planning a rekey in Monrovia?

Call (951) 903-3193 and tell us how many doors you want on the new key and the brand of the locks if you know it. We'll quote the rekey before any work starts.