
Change or rekey · Mississauga
Lock Replacement & Upgrade
Three teenagers, a dog walker, a cleaner and one house key that keeps going missing. You are tired of cutting copies and would rather give each person a code you can switch off, with a proper deadbolt behind it.
Call now · open 24/7(289) 805-7422In plain words
Not every complaint about a lock ends in a new lock, and a good visit says so. A cylinder that turns stiffly may only need cleaning and fresh pins; a lost key calls for rekeying, which keeps the hardware and changes the key; a loose lever often wants a tightened spindle. Replacement earns its place when the mechanism is worn through, the housing is damaged, the grade was never adequate for the entrance, or you want a different function, finish or a keypad. The locksmith lays the three routes side by side so the choice rests on what the door needs rather than on what is in the van.
How the visit goesThe brass handleset has gone blotchy and green where the winter salt reaches it, and the coating on the deadbolt is lifting in flakes. It still locks, but it looks tired beside the fresh paint on the door.
Lock Replacement & Upgrade · Mississauga
How the visit goes

- 1
Who is asking for the change
The first check is about the person, not the door. An owner can change any lock on their home. A tenant who wants new hardware on the unit door needs the landlord's agreement, and a landlord who changes a lock while a tenant lives there hands over new keys. The locksmith asks which situation applies and, where paperwork helps, looks at identification, a deed, a lease or a property-management note. It takes a minute and it means the new lock goes on with everyone who has a stake in the door knowing about it, which is exactly how a lock should start its working life.
- 2
Adapting older and unusual doors
Not every door is a standard modern slab. A century home with a mortise lock may keep its case and get a new cylinder and strike, or take a filler plate that lets a cylindrical deadbolt sit where the old case was, without hacking at the original stile. A door thicker than 45 millimetres gets extended spindles and screws. A sliding patio door gets a replacement mortise hook lock or a keyed surface bolt sized to the rail. Steel and fibreglass doors are drilled only with the right bits and a jig, and a new deadbolt above an existing knob is bored with a template so it sits square.
- 3
The rental paperwork, quietly sorted
If the door belongs to a rental unit, the visit finishes with the keys in the right hands. When a landlord orders the change, giving the tenant a full set of new keys is standard practice. When a tenant orders it with the landlord's consent, a key for the landlord is cut alongside the household's and the consent is noted. The locksmith can leave a short written record of the hardware fitted and the keys issued for the property file, so both sides know what is on the door and nobody is surprised at the next inspection or move-out.
In the van
- Filler plates and thick-door extension kits
- Adjustable latch or bolt
- Knob or lever entry set
- Chisels, mallet and hand screwdrivers
- Manufacturer-approved cylinder lubricant
What affects the quote
- 1
Strike reinforcement and jamb repair
A reinforced strike with long screws is a modest addition; repairing a jamb split from a forced entry, or fitting a strike box into a frame that has never had one, adds labour and materials.
- 2
Keying alike and rekeying
Pinning new cylinders to one key and repinning existing locks to match is work per cylinder, so a whole house on a single key is quoted by the number of locks joining it.
- 3
Grade of hardware
A light Grade 3 knob set, a residential deadbolt with a strong label rating and a Grade 1 commercial-style deadbolt are different products at different levels, and the quote follows the grade you choose for each door.
Same fees day, night or weekend.
Lock Replacement & Upgrade: questions
What information helps before the visit?
Photographs of each lock from outside and inside, plus one of the door edge showing the latch plate and one of the strike on the frame, tell the locksmith most of what they need. Add the door thickness if you can measure it, whether the door is wood, steel or fibreglass, the finish you want to match, how many doors are involved and whether you want them all on one key.
Can the same visit replace locks on more than one door, or does each door need its own appointment?
One visit usually covers every door on the job. The locksmith brings a range of cylinders and strikes, measures each door's backset and bore, and works through the list in order, front entrance first if a key change matters most there. Having a rough list ready, which doors, and whether they should end up on one key or several, lets the locksmith plan hardware before arriving rather than working it out door by door on site.
Will a new lock fit the holes already in my door?
Usually, yes. Most residential doors are prepared to standard sizes, a 54 millimetre cross bore and a backset of 60 or 70 millimetres, and most modern hardware adjusts between those backsets. The locksmith measures before choosing, so the new lock is matched to the door rather than the other way around. Where an older mortise lock or an unusual bore is found, filler plates, extension kits or a carefully jigged new bore bring the door to standard.
Lock Replacement & Upgrade near you
Peel, Ontario
Mississauga information
- Town
- Mississauga, Peel, Ontario
- In business
- 12 years
- Hours
- Open 24/7 · nights, weekends and holidays, same fees
- Phone
- (289) 805-7422
- Visits
- On-site assessment preferred. Request a visit or call.
What the census means at the door
38%
Homes of every age. About 38% of homes in Mississauga were built in 1980 or earlier, according to the 2021 Census.
In an area of varied housing ages, rekeying is the one job that fits every door. Old cylinders and new ones both take fresh pins, so a household moving into either kind of home can start with keys that nobody else holds.
37%
Single-detached houses make up about 37% of homes in Mississauga (2021 Census).
Attached housing turns over more often than detached, so rekeying between tenants or owners is a constant. Because suite doors tend to be standard, the job is usually a straightforward pin change and a fresh set of keys cut on site.
Open 24/7
Request a visit
Three teenagers, a dog walker, a cleaner and one house key that keeps going missing.
Call now · open 24/7(289) 805-7422- On-site assessment preferred
- Same fees day, night or weekend
- 12 years in business




