The keys handed over at closing may open your new house, but you do not know how many copies are still in circulation. Former owners, tenants, contractors, neighbors, dog walkers, and real estate agents may all have had access at some point. That is why choosing the best locks after home purchase starts with controlling who can enter, not simply buying the most expensive hardware on the shelf.
For most Denver homeowners, the first security appointment should happen before the moving truck arrives or as soon as possible afterward. A qualified locksmith can assess every exterior opening, rekey compatible locks, identify weak door hardware, and help you decide where a full replacement actually makes sense.
Best Locks After Home Purchase Start With Rekeying
Rekeying changes the internal pin configuration inside a lock cylinder so old keys no longer work. The exterior lock hardware stays in place, but the key access changes completely. It is usually the fastest and most cost-effective choice when the existing locks are in good condition and provide adequate security.
A rekey is often the right move when the home has solid deadbolts, the locks operate smoothly, and you want one new key to work across several exterior doors. It also prevents the unnecessary expense of replacing quality hardware just because you do not know who has a key.
Rekeying does have limits. A locksmith cannot make worn-out, low-quality, damaged, or improperly installed hardware stronger by changing the pins. If a deadbolt is loose, the latch does not line up with the strike plate, or the keyway has visible wear, replacing the lock may be the better investment.
Do not forget less obvious access points. Include the garage-to-house door, side doors, basement doors, patio doors, shed doors that store valuable equipment, and gates where access affects privacy or safety. If there is a mailbox lock tied to your property, that may need attention as well.
Choose a Deadbolt Based on the Door, Not the Packaging
A keyed deadbolt remains a dependable foundation for most exterior residential doors. Look for a quality Grade 1 or Grade 2 deadbolt from a recognized lock manufacturer, then make sure it is installed correctly. The grade matters, but installation determines whether the hardware can perform as intended.
For a front entry door, a single-cylinder deadbolt is common and practical. It uses a key outside and a thumb turn inside, allowing residents to exit quickly without searching for a key. This is generally the preferred setup when a door has no nearby breakable glass.
A double-cylinder deadbolt requires a key on both sides. It can prevent someone from reaching through broken glass near the lock to turn the thumb turn, but it also creates an exit concern during a fire or emergency. Local building codes and fire safety requirements should guide that decision. Never leave the interior key in a place where it is hard to find when seconds matter.
The bolt should extend well into the door frame, and the strike plate should be secured with long screws that reach the structural framing behind the trim. A strong deadbolt attached to a weak strike plate is a common security gap. On older homes, the frame and jamb deserve as much attention as the lock itself.
Check the Door Before Replacing the Lock
Many lock complaints are actually door alignment problems. Seasonal movement, settling, weather exposure, or loose hinges can keep a bolt from entering the strike smoothly. Forcing a stiff deadbolt can damage the lock and leave you locked out later.
Before selecting new hardware, check whether the door closes squarely, the latch engages without lifting the door, and the deadbolt turns without resistance. A locksmith can correct alignment issues and recommend hardware that fits the door preparation already in place.
When a Smart Lock Is the Better Choice
Smart locks work well for homeowners who want convenient access control without giving out physical keys. You can assign individual codes to family members, guests, cleaners, or contractors, then remove access when it is no longer needed. That is especially useful during the first few weeks after a purchase, when painters, installers, and repair crews may be coming and going.
A keypad deadbolt is often the simplest step into keyless entry. It eliminates the need to hide a spare key and can still include a traditional key cylinder as a backup. More advanced smart locks may allow remote management, activity alerts, and temporary codes through a phone app.
Convenience comes with trade-offs. Smart locks require batteries, and some functions depend on a reliable home network or connected hub. Choose a model with a clear low-battery warning and a dependable backup entry method. If you prefer simple hardware with minimal maintenance, a quality mechanical deadbolt may suit you better.
Also consider who will manage the account. If the previous homeowner left behind a smart lock, do not assume resetting it is enough. Make sure it is removed from the former owner’s app or account and fully factory reset. In some cases, replacement is the cleanest way to establish complete control.
Protect the Hardware Around the Lock
The best lock can still be defeated if the door, frame, or glass around it is vulnerable. After moving in, inspect each exterior door as a complete system.
A solid-core or metal exterior door, reinforced strike plate, properly adjusted hinges, and a secure deadbolt work together. Doors with exposed hinge pins may benefit from non-removable hinge pins or security hinges. French doors, sliding glass doors, and doors with sidelights often need specialized hardware because their weak points differ from a standard front door.
Sliding patio doors deserve special attention. Their factory latch may not offer the same resistance as a deadbolt. A properly fitted auxiliary lock or other purpose-built reinforcement can reduce the risk of the door being forced or lifted off its track. Avoid improvised solutions that interfere with emergency exit or damage the frame.
If your front door has a large glass panel beside the lock, talk with a locksmith about the right deadbolt configuration and added protective options. The answer depends on the door layout, how the home is used, and safe egress requirements.
Avoid These New-Home Lock Mistakes
Homeowners are often focused on paint colors, utility transfers, and moving boxes. Security can get delayed until after an uncomfortable surprise. A few decisions help avoid that situation:
- Do not assume the seller turned over every key. Rekey or replace exterior locks regardless of how trustworthy the transaction felt.
- Do not install a new deadbolt without checking the strike plate and frame screws. The door system is only as strong as its weakest component.
- Do not give every visitor the same permanent key or code. Use temporary codes for short-term access when possible.
- Do not overlook the door from the garage into the home. It is an exterior-level security concern in most households.
For rental properties, vacation homes, or homes with frequent service workers, key control becomes even more valuable. A keypad lock, restricted keyway, or a carefully planned rekey schedule can make access easier to manage without creating a stack of unknown spare keys.
Build a Practical Lock Plan for Your Home
Start with the doors you use most: the front entry, garage entry, and rear or patio door. Rekey serviceable locks right away, replace weak or damaged deadbolts, and reinforce the strike area where needed. Then review secondary entrances, gates, and outbuildings based on what they protect.
A mobile locksmith can complete much of this work on site, including lock rekeying, deadbolt changes, latch protection, lock repair, and keyless entry upgrades. Broadway Lock & Key helps Denver-area homeowners evaluate the actual condition of their doors and hardware instead of pushing a one-size-fits-all replacement.
Your new home should come with a fresh start on access. Once you know exactly who holds a key or code, you can settle in with one less unanswered question.
