(718) 635-2219

Residential Lock Change & Replacement in Brooklyn

Professional lock change and door lock replacement services for Brooklyn homes and apartments. Whether you’re moving in, replacing worn hardware, or restoring security after lost keys, we provide secure installation with clear pricing.
  • Apartment Buildings
  • Private Homes
  • Brownstones
(718) 635-2219
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Licensed & Insured • Transparent Pricing • Local Brooklyn Service

What Does “Lock Change” Actually Mean?

When homeowners or apartment residents search for a lock change in Brooklyn, they may be referring to several different services. In some cases, it means replacing the entire door lock. In others, it involves changing the internal cylinder or rekeying the existing hardware so old keys no longer work.

For many Brooklyn apartments—especially those with mortise locks or Jimmy Proof (Segal) locks—replacing the cylinder is often the most efficient way to restore security. This allows you to receive a new set of keys without removing the entire lock body from the door.

Full door lock replacement is recommended when the hardware is worn, damaged, outdated, or when upgrading to a new style, such as a deadbolt, handleset, or smart lock. The right solution depends on your door type, lock configuration, and security needs.

If you’re unsure whether you need a rekey, cylinder change, or full lock replacement, we evaluate the existing hardware and explain the available options clearly before proceeding.

Apartment mortise lock change cutaway showing internal latch and deadbolt

Lock Change vs Rekey: What’s the Difference?

Understanding the difference between rekeying, cylinder replacement, and full lock replacement helps you choose the right solution for your Brooklyn home or apartment. The best option depends on your existing hardware, security goals, and door configuration.

REKEY ONLY
CYLINDER REPLACEMENT
FULL LOCK REPLACEMENT
What Changes?
Internal pins are adjusted so old keys no longer work.
The lock cylinder is removed and replaced with a new keyed cylinder.
The entire lock body and hardware are replaced.
When It’s Common in Brooklyn
Common after lost keys or tenant turnover when hardware is still in good condition.
Very common for mortise locks and Jimmy Proof (Segal) locks used in Brooklyn apartments.
Used when upgrading hardware, changing style, or replacing worn or damaged locks.
Hardware Removed?
No external hardware removed.
Only the cylinder is replaced.
Entire lock removed and replaced.
New Keys Provided?
Yes
Yes
Yes
Best For
Maintaining existing lock hardware.
Quick security reset for apartment entry doors.
Upgrading to deadbolts, handlesets, or smart locks.

In many Brooklyn apartments, our residential locksmith will determine that a cylinder replacement is often the most efficient and cost-effective method of restoring security. However, each situation is evaluated individually to determine the safest and most practical approach.

Not Sure Which Option Is Right for Your Door?

Every Brooklyn door is configured differently. We’ll assess your existing hardware and explain whether a rekey, cylinder replacement, or full lock change makes the most sense for your situation.
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Residential Door Locks We Replace & Service in Brooklyn

We service and replace the most common home and apartment door locks found throughout Brooklyn apartment buildings, brownstones, and private homes.

Deadbolt Lock Replacement

Standard deadbolts are commonly used on private homes and some apartment entry doors. We provide deadbolt lock replacement when hardware is worn, outdated, or being upgraded for improved security.

Doorknob & Lever Replacement

We replace worn or damaged doorknobs and lever locks commonly used on interior doors and some residential entry doors. If the latch fails or keys no longer functions, replacement restores operational security.

Mortise Lock Cylinder Change

Mortise locks are widely used in Brooklyn apartment doors. In many cases, replacing the mortise cylinder is the most efficient way to restore security without removing the full lock body.

Jimmy Proof (Segal) Lock Replacement

Common in Brooklyn apartments, Jimmy Proof locks provide surface-mounted security. We replace worn hardware or upgrade cylinders when keys are lost or access needs to change.

Handleset Installation

Often used on private homes, handlesets combine decorative trim with a separate deadbolt. We replace damaged hardware or upgrade existing entry door setups.

Smart Lock Installation

Upgrade to keypad, Bluetooth, or WiFi-enabled locks for keyless entry. We install and replace smart locks compatible with your existing door configuration.

High-Security Lock Upgrade

We install and replace Medeco and Mul-T-Lock cylinders for enhanced key control and restricted duplication, commonly used in Brooklyn apartment applications.

Garage Door Lock Cylinder

Many Brooklyn homes use keyed cylinder locks or T-handle locks on garage doors. We replace malfunctioning or outdated garage door locks to ensure secure access and proper key control.

Security Gate Lock Change

Metal security gates often use mortise or deadbolt configurations. We replace worn cylinders and hardware to maintain proper gate function and security.

Shabbos Lock Installation

Whether you say Shabbos or Shabbat Lock, these Mechanical push-button locks are commonly used in observant households. We install and replace Shabbos-compatible locks when upgrading or restoring entry access.

Mailbox Lock Replacement

We replace standard mailbox locks found in apartment buildings and multi unit hoouses throughout Brooklyn. Lost mailbox keys or jammed cylinders can usually be resolved quickly with a new keyed lock.

Cam Locks Cabinet & Drawer

Cam locks are commonly used for cabinets, desks, and storage drawers. When keys are lost or mechanisms fail, we replace the lock with a properly sized cam cylinder suited to the furniture application.

When Should You Change the Locks on Your
Home or Apartment?

There are several common situations where a lock change or cylinder replacement is recommended to restore security and peace of mind.

Moving Into New Home

You may not know how many copies of the previous keys exist. Changing your door locks ensures only authorized occupants have access.

Lost or Stolen Keys

If keys are misplaced or stolen, replacing the cylinder or rekeying prevents unauthorized entry without waiting for a security issue to arise.

Tenant Turnover

After a tenant moves out, updating locks is a responsible step before new occupancy.

Break-In or Force Entry

If a lock has been forced or damaged, replacement is often safer than repair to restore reliable security.

Worn or Sticking Locks

If a lock has been forced or damaged, replacement is often safer than repair to restore reliable security.

Smart or High-Security

Some homeowners choose to upgrade to smart locks or high-security cylinders for improved key control and convenience.

Our Residential Lock Replacement Process

Our residential locksmiths follow a structured approach to ensure your home or apartment lock replacement is completed safely, efficiently, professionally, and with clear communication from start to finish.

Locksmith technician speaking with customer on phone inside service van

Initial Call & Information Review

When you contact us, we discuss your situation and gather the necessary details about your door type, existing hardware, and security concerns. This allows us to dispatch a technician prepared with appropriate tools and replacement options.

Locksmith evaluating residential door lock and hardware

On-Site Hardware Assessment

Upon arrival, we inspect your current lock system — whether a mortise lock, deadbolt, doorknob, Jimmy Proof, or cylinder-based configuration — to determine whether rekeying, cylinder replacement, or full hardware replacement is most appropriate.

Locksmith discussing service options with customer outside a Park Slope brownstone

Convey Clear Pricing

Once the correct solution is identified, we explain the scope of work and confirm pricing before proceeding. There are no hidden add-ons or unexpected changes after approval.

Locksmith replacing door lock cylinder on residential brownstone

Cylinder or Lock Replacement

We remove and install hardware using controlled methods designed to preserve the integrity of your door and frame while ensuring proper alignment and secure fitment.

Locksmith handing new house keys to homeowner outside brownstone

New Keys Provided & Function Test

New keys are supplied with the replaced lock or cylinder. We test each key and verify smooth operation, consistent locking function, and proper latch alignment before completing the service.

House Lock Brands

We supply, install, and service a variety of popular lock brands for homes and apartment doors

Kwikset lock brand logo for residential deadbolts smart locks and keyless entry systems
Schlage door lock brand logo for residential and commercial deadbolts and smart locks
Baldwin door hardware logo for luxury brass locks and residential security
Emtek door hardware logo for custom brass knobs levers and entry sets
Mul-T-Lock high security lock logo for restricted key systems and anti pick cylinders
Medeco high security lock logo for restricted key control and pick resistant cylinders
Segal lock logo for jimmy proof deadbolts and surface mounted security locks
Maxtech door hardware logo for jimmy proof deadlocks cylinders and commercial locks
Marks USA door hardware logo for heavy duty mortise locks and access control systems
Yale Smart Living logo for smart locks and connected home security systems
Codelocks keyless access control smart lock brand logo for residential and commercial security systems
Simplex mechanical pushbutton lock logo for keyless access control systems
Arrow Lock and Door Hardware logo for commercial locksets exit devices and cylinders
CompX National logo for cabinet locks cam locks and drawer security systems

Residential Lock Change Price Guide

Price Guide

Residential Locksmith

We provide realistic pricing ranges based on the type of lock, door configuration, and hardware selected. Final pricing is confirmed before work begins. Actual cost depends on hardware brand, lock type, security level, hardware condition, time, condition of service, and/or unforseen circumstances.

  • Service Call Fee

    $45

    Covers dispatch and trip charge for arrival during standard service hours; lock replacement or cylinder work is priced separately.

  • Cylinder Replacement

    $150 - $265

    Common for Brooklyn apartment entry doors using mortise locks or Jimmy Proof hardware. Includes removal of the existing cylinder and installation of a new keyed cylinder with new keys provided. Not including high security lock cylinders.

  • Deadbolt Replacement

    $165 - $295

    Removal and installation of residential deadbolts on home or apartment entry doors. Hardware cost varies based on brand, finish, and security level. Not including smart locks and high security deadbolts.

  • Doorknob & Levers

    $135 - $245

    Replacement of keyed knobs and lever locks used on interior or residential entry doors when hardware is worn, damaged, or malfunctioning.

  • Handleset Installation

    $225 - $425

    Installation of entry door handlesets commonly used on private homes. Includes proper alignment and deadbolt integration. Hardware may be extra depending on brand.

  • Smart Lock Installation

    $185 - $350

    Installation of compatible keypad, Bluetooth, or WiFi-enabled smart locks on residential doors. Hardware pricing may be extra and varies by model and features.

  • High-Security Locks

    $265 - $475

    Restricted key control cylinders such as Mul-T-Lock or Medeco for enhanced security and controlled key duplication.

  • Mailbox Lock Replacement

    $85 - $145

    Replacement of standard mailbox cylinders found in Brooklyn apartment buildings and private homes. New keys provided.

  • Cabinet & Drawer Cam Lock

    $95 - $165

    Replacement of properly sized cam locks used for cabinets, desks, and storage furniture when keys are lost or mechanisms fail.

Ready to Secure Your Home or Apartment?

Expert lock replacement and cylinder changes throughout Brooklyn, completed with transparent pricing and careful installation.

(718) 635-2219
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Licensed & Insured • Transparent Pricing • Serving All Brooklyn

Frequently Asked Questions - Lock Change

Answers to common questions about lock change, rekeying, cylinder replacement, smart locks, and high-security upgrades for homes and apartments throughout Brooklyn.

Lock Change vs Rekey

When moving into a new home or apartment, updating your locks is strongly recommended. In many Brooklyn apartments, replacing the lock cylinder is often more efficient than traditional rekeying. The right option depends on the condition of your existing hardware and your security goals.

Rekeying adjusts the internal pins of the existing lock so old keys no longer work. Replacing a lock involves removing either the cylinder or the entire hardware unit. In many Brooklyn apartment applications, cylinder replacement is often the cleaner and faster solution. See this lock change vs rekey comparison table for more clarity.

If you have lost your house keys, we typically replace the cylinder or lock to provide a new keyed system. This ensures security and prevents previous keys from working.

If no working key is available, the most secure solution is typically replacing the lock cylinder or, in some cases, the entire lock. This provides a new keyed system and ensures that any previously lost keys no longer grant access.

If you are locked out and need immediate assistance, our emergency locksmith service can help restore entry before completing the lock update. For non-urgent situations, you can also schedule a visit through our residential locksmith service to replace the cylinder and issue new keys.

High-Security Locks & Upgrades

Yes. We carry select high-security cylinders, including brands such as Medeco and Mul-T-Lock, when compatible with your existing hardware configuration.

Yes. We install and replace high-security cylinders and compatible lock systems designed to restrict unauthorized key duplication and improve resistance to forced entry.

The best high-security lock depends on your door type and existing hardware. Many Brooklyn apartments use the jimmy proof / segal lock configurations where upgrading the cylinder is more practical than replacing the full lock body.

In many cases, yes. Compatibility depends on the door and lock type. We evaluate your existing hardware and determine whether a high-security cylinder or smart lock upgrade is appropriate.

General Questions

In most cases, yes. Availability depends on scheduling and location within Brooklyn. We aim to provide timely service without relying on third-party dispatch centers.

Yes. We regularly service Brooklyn apartments, brownstones, and private homes, including pre-war mortise lock systems and surface-mounted Jimmy Proof locks.

We service and replace deadbolts, mortise locks, Jimmy Proof locks, doorknobs, handlesets, high-security cylinders, smart locks, mailbox locks, and cam locks used in residential settings.

We work with many lock brands like Schlage, Kwikset, Mul-T-Lock, Medeco, Marks, Segal, Yale, and much more.

Often, replacing the existing cylinder with a new keyed unit provides immediate security improvement at a reasonable cost. Upgrading to high-security cylinders is another option when key control is a concern. See our high-security lock pricing.

Smart Locks & Keyless Entry

Yes. We install many types of compatible Yale or Schlage smart locks, keypad systems, and keyless entry devices on residential doors when the configuration allows.

We install a variety of keypad app-enabled wifi door lock systems. Compatibility depends on door thickness, backset, and current hardware configuration.

Yes. We install and replace mechanical Shabbos locks (also known as Shabbat-compliant mechanical push-button locks) commonly used in observant households. Compatibility depends on the door type and existing hardware configuration. We assess your entry door to determine whether a full lock replacement or cylinder adjustment is required for proper installation.