Why locks on a new build are a different problem
On an existing home, you have a set of keys and you want them to stay private. On a build, the situation is the opposite for a while. Dozens of people need to get in, often on different days, and nobody wants to stop work because a single key is missing. The locks have to serve the build first and the owner second, then switch over cleanly at the end.
That switch is the heart of new construction lock work. If it is handled well, the owner receives a set of keys that no worker, supplier or former site manager has ever held. If it is handled poorly, the owner moves in and quietly shares access with an unknown number of people from the build.
In South Florida the pace of building adds pressure. Single-family homes, townhome rows, villas in gated communities and mid-rise buildings are under construction at different stages across Boca Raton, Delray Beach, Boynton Beach and the nearby area. Each type has its own door count, hardware and access arrangement, and a locksmith can help plan the keying early so the end of the job is not a scramble.
Construction keys and why they exist
A construction key, sometimes called a builder key or a temporary key, is a key that works a lock during the build and then stops working. Some systems do this through a temporary key that is disabled when the first permanent key is used. Others use a temporary core or a temporary cylinder that is later swapped for the final one. The details depend on the product, and a locksmith will tell you which approach suits the hardware on your doors.
The point is simple. The crew gets reliable access, the owner never has to trust that every temporary key was collected, and the changeover is a clear event rather than a vague hope. Without something like this, many builders hand out copies of a single key and hope for the best, and the copies spread.
A builder should decide before the locks are installed which approach will be used, because it affects what hardware is ordered. Swapping to a different system halfway through a job can be done, but it is easier to plan from the start. If you are unsure, talk it through on the phone. The technician can explain the options and what each would mean for your door types.
Final keying at the end of the build
Final keying is the step where the locks are set up for the permanent owner. Depending on the system, this may mean rekeying the cylinders, installing the final cores, or running a first permanent key that disables the temporary one. The owner then receives a new set of keys, and any construction key ceases to work.
For a single home, this can be a short visit. The locksmith goes door to door, sets each lock to the final configuration, tests the keys, and confirms that the temporary keys no longer operate. For a larger project, such as a townhome row or a small commercial building, the process is longer and is often done in a planned sequence by unit.
A useful habit is to schedule final keying after the last trades are finished and before the owner takes possession. If cleaners, painters or punch-list crews still need access, finish with final keying right after they leave. Keying too early forces someone to chase keys. Keying too late leaves the owner with construction access they did not agree to.
Whatever the timing, the owner should be told what has been done and given a complete count of keys. A simple written handoff note, listing which doors each key opens and how many copies exist, avoids confusion in the months after closing.
Keyed alike, keyed different and master keyed
New homes and buildings give you a chance to decide how keys relate to each other. A keyed-alike arrangement means several locks open with the same key. A home owner may want the front door, back door and garage entry all on one key so they carry fewer keys. A keyed-different arrangement means each lock has its own key, which is common for interior rooms or separate units.
A master key system adds a layer. Each unit has its own key, and a master key opens all of them. This arrangement suits small multi-unit buildings, offices with several tenants, and any project where a manager needs access without carrying a heavy ring. It also introduces trade-offs that deserve some thought before the system is installed, since a lost master key affects every lock under it.
The earlier these choices are made, the tidier and simpler the work is, because the locks can be ordered in the right configuration instead of changed later. For a deeper look at how the options work, see the pages on master key systems and the guide to keyed-alike locks.
Choosing hardware for a Florida build
Locks on new construction face real conditions in this region. Salt air near the coast, high humidity, strong sun and storm exposure all affect hardware. Poorly finished hardware can pit, stick or fail early, particularly on exterior doors close to the Intracoastal or the ocean.
Door type also matters. Impact-rated doors and sliders are common here, and they have their own hardware requirements. A deadbolt, a handle set and a strike plate all need to suit the door and frame. Installing hardware that does not fit properly leads to doors that do not latch smoothly, which becomes a nuisance for the new owner.
A locksmith can review the door schedule and suggest hardware that fits the door material, the exposure and the way the owner will use the entry. For related reading, see the pages on impact door hardware and the guide on caring for locks in salt air.
- Match the hardware finish to the exposure, especially near salt water.
- Check that the strike plate and frame are solid enough for the deadbolt.
- Decide on a smart lock or keypad before the door is ordered if you can.
- Confirm that the hardware suits the door thickness and bore size.
- Think about how guests, cleaners and family will get in over time.
Smart locks and keypads on a new build
Many owners now ask for smart locks or keypad locks from the start. A new build is the easiest time to do it, because the wiring, the batteries and the door prep can be considered together. A keypad deadbolt can serve as a keyless entry for family and a PIN-based entry for guests, and a smart lock can add remote control through a phone.
These devices bring a few cautions. They need a plan for what happens when the battery dies or the network drops, and a physical key should remain available for the owner. They also need proper installation so that the latch lines up with the strike, since misalignment shortens battery life and causes false errors.
A locksmith can install and set up these locks, test the manual override, and explain how the owner should manage user access. Pages on smart lock installation and keypad lock installation describe what a visit involves.
Contractor access and key control during the build
Key control on a job site is mostly about discipline. Who has a key, when was it issued, and when must it be returned? Even a simple log kept by the site manager can prevent months of uncertainty. Without it, people forget who was given what, and a lost key causes a debate instead of a quick fix.
A few practices help. Issue as few keys as possible. Prefer a lockbox for short-term access by trades, with the credential changed at certain points in the schedule. Treat a key that was lost on site as a reason to review, not to ignore. If a key may have left the project, the safest answer is to change the lock or to move up the final keying.
Builders also need to think about material theft, which is a known problem on active sites. Locking the garage entry, securing the temporary doors and protecting the lockbox location all help. A locksmith can walk the site and point out weak spots such as loose strike plates, temporary hasps and doors that do not seat properly. See the page on construction site lock service for more on securing an active site.
Condo and multi-unit new builds
Multi-unit projects add complexity. Each unit door, mailbox, storage cage and common-area door may need a distinct key or access method. The association, property manager or developer usually decides the overall system, and a locksmith carries out the plan.
A good plan sets a key hierarchy before the first lock is ordered. It decides who holds master access, how emergency access works, and how unit owners will receive and change their keys. In many buildings, the developer hands over keying records to the new association, and that record becomes critical when a lock fails years later.
If you are working on a townhome row or a small multi-family building, it is worth reading the page on multi-family building lock service and the guide on master key system planning. They explain how the pieces fit.
A walk through a typical handover
Picture a single-family home in a Boca Raton neighborhood, finished on a Thursday, with the buyer set to take possession the following Tuesday. During the build, the framers, electricians, plumbers, tile setters, painters and cleaners all used a temporary key or a lockbox. The sales team also has a copy. The builder wants the owner to start with a clean slate.
On Friday, the locksmith arrives, walks every exterior door and checks that each lock operates smoothly with the current temporary key. Any lock that sticks is looked at before the final keying, since a lock that is going to be rekeyed should be in good mechanical condition first. A door that has settled slightly, a strike plate that needs adjusting or a latch that drags across the frame is corrected now rather than after the owner moves in.
Then the locks are set to the final configuration. The locksmith tests the new keys in every lock, confirms the old temporary key no longer works, and labels the keys by door. If the owner asked for a keypad or smart lock on the main entry, that device is set up and its manual key tested. The builder receives a short note listing the doors, the key counts and any items for follow-up.
On Tuesday, the owner receives a labeled set of keys and knows that nobody from the build can still use the old ones. It is a small piece of the project, but it is one that the owner notices every day for years.
Common mistakes on new builds
A few patterns show up again and again. The first is waiting until the week of closing to think about keys. By then, the hardware is installed, the schedule is tight and every option costs time. Raising the topic when the door schedule is made keeps choices open.
The second is handing out many copies of one key without a log. When a key goes missing, nobody can say who held it, so nobody can judge the risk. A simple sign-out sheet is enough to prevent this.
The third is assuming the owner will rekey after moving in. Some will, but many will not, and the result is a home with keys in circulation that the owner has never counted. A final keying step built into the schedule is better for everyone, including the builder, whose name stays on the home.
The fourth is forgetting the less obvious locks: mailbox, garage entry door, storage closet, pool gate, side gate and any interior door that has a keyed lock. A walk-through with a list prevents the owner from discovering an unknown key months later.
What to have ready when you call
You do not need to know every product name to describe what you need. A clear description of the project helps the technician give accurate guidance on the phone. Mention the type of building, the number of doors, the stage of the build and what you want the locks to do at the end.
Useful details include the address, whether the doors are installed yet, the hardware brand if you know it, whether you want keyed-alike or master keyed locks, and who is authorizing the work. Photos of the door types are helpful. If the project is complicated, the technician may suggest an on-site visit before a quote can be given, and a service call charge applies, which is explained on the phone before anyone is dispatched.
Quotes are given only by phone. If you are planning a build, or you are close to handover and need final keying, call and describe the situation. A conversation up front is often the easiest way to avoid a problem at the end.
- Describe the project type and the number of exterior and interior doors.
- Tell the technician where the build is in its schedule.
- Share any hardware choices already made.
- Say who will hold keys and who will own the building at the end.
- Call to arrange a visit, and ask any questions about timing.
Questions people ask
What is a construction key and why does a builder use one?
A construction key lets workers enter a building during the build and is later disabled when the permanent keys are set up. It prevents the owner from inheriting a pile of unknown copies. The exact method depends on the hardware, so ask a locksmith which approach suits your doors before the locks are ordered.
When should final keying be done?
Final keying works best after the last trades finish and before the owner takes possession. Too early, and crews struggle to get in. Too late, and the owner starts out with construction access still active. Plan it with the schedule so the changeover is a clear step with a written key count.
Can existing locks on a new home be rekeyed instead of replaced?
In many cases yes. Rekeying changes the internal pins so old keys stop working while the hardware stays in place. It is a common way to complete final keying. Whether it suits your locks depends on the brand and the condition of the cylinders, which a technician can confirm on the phone or on site.
Do impact doors need different locks?
Impact-rated doors and sliders often use particular hardware, and the lock must fit the door's thickness, bore and frame. A mismatched lock can cause poor latching. Tell the technician the door brand and type when you call so the right parts are selected before anyone arrives.
Can a locksmith set up a master key system for a small building?
Yes, a locksmith can plan and install a master key system for small multi-unit buildings and offices. The plan should be made before locks are ordered, so the hierarchy fits your needs. Quotes are given by phone, and a larger project may need an on-site visit first.
What happens if a construction key is lost?
Treat it as a security question. If the key may have left the project, the safest response is to change the affected lock or bring forward the final keying. A written log of who held each key helps you judge how serious the loss is. Call to discuss the options for your hardware.
Describe the situation by phone and we will tell you what the job involves. Quotes are given by phone. Jobs that cannot be quoted without seeing them need a technician on site, and the service call charge is explained on the phone before anyone is dispatched.
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