Can You Reuse a Digital Lock When Moving House?

If your digital lock is still working well, you may not want to leave it behind when moving to a new home.

Can you remove the lock from your current door and install it at the new property?

In many cases, it may be possible.

However, reusing a digital lock is not as simple as confirming that the new home also has a wooden door or metal gate.

Interlock needs to assess:

• The existing digital lock model
• Its specifications and installation requirements
• The condition of the lock
• The new door or gate
• The existing lock and cut-out at the new property
• The frame, strike and available installation space

If the current lock and new entrance are compatible, the lock may be removed and reused at the new home.

Jump to a Section

• Can a digital lock be reused?
• What Interlock needs to assess
• Moving into a home with a new door
• What if the new home already has a digital lock?
• Why the same lock may not fit
• Interlock’s reuse process
• How much does reinstallation cost?
• What happens if it cannot be installed?
• When is reuse worthwhile?
• What to do before moving
• What to send Interlock
• Frequently asked questions

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Can an Existing Digital Lock Be Reused?

Yes, an existing digital lock may be reusable at another property.

The main goal is to retain the current lock rather than replace it unnecessarily.

However, reuse depends on two separate questions:

1. Is the existing lock suitable and in an appropriate condition for reuse?
2. Can that lock be installed correctly on the new door or gate?

A working digital lock is not automatically compatible with every entrance.

The Lock Must Be Assessed

Interlock first needs to identify:

• The brand and model
• The type of lock
• The mortise or locking mechanism
• The front and rear lock-body dimensions
• The supported door or gate specifications
• The existing installation condition

The New Entrance Must Also Be Assessed

The new entrance may have:

• A different door thickness
• A different lock cut-out
• A different frame and strike
• Less installation space
• A nearby handlebar
• A gate positioned close to the main door
• An existing digital lock from the previous owner

Both sides of the assessment are necessary before confirming that the lock can be reused.

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What Does Interlock Assess Before Approving Reuse?

1. The Current Digital Lock Model

We first identify the exact lock that you intend to bring to the new property.

This helps us understand:

• The required door or gate thickness
• The lock-body dimensions
• The mortise dimensions
• The available installation orientation
• The required strike or receiving bracket
• Whether the lock is intended for a door, gate, glass door or sliding entrance

A model name is more useful than describing it only as a fingerprint or facial-recognition lock.

2. The Existing Lock Installation

Photos of the current installation help us see:

• How the lock is mounted
• The existing mortise and faceplate
• The front and rear lock bodies
• The strike or receiving bracket
• Any visible damage or missing parts

Do not dismantle the lock before the initial assessment unless specifically advised.

3. The Lock’s General Condition

A digital lock should be in suitable working condition before it is moved and reinstalled.

Tell us if the lock currently has problems such as:

• Intermittent unlocking
• Weak or unusual motor sounds
• A loose handle
• Battery problems
• Camera or app issues
• Difficulty locking or unlocking

Moving the lock does not automatically correct an existing fault.

4. The New Door or Gate

We assess the new entrance using clear photos and, where required, measurements.

This includes:

• The front and back of the door
• The side or door edge
• The strike area
• The full doorway
• The gate, where applicable

Read our photo guide:

Five Photos We Need Before Recommending a Digital Lock

5. Relevant Measurements

Depending on the entrance, Interlock may ask for:

• Door-to-gate clearance
• Distance from the door edge to a handlebar
• Door-to-frame gap
• Door thickness

Read:

How to Measure Your Door and Gate for a Digital Lock

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What If the New Home Has a Brand-New Door?

A new and uncut door is often easier to assess because there may be no existing lock holes or mortise cut-out to work around.

However, it still needs to be checked.

A brand-new door may differ in:

• Thickness
• Material
• Available lock area
• Frame design
• Strike position
• Decorative panels
• Distance from the gate

New Does Not Automatically Mean Compatible

Even without an existing lock cut-out, the selected digital lock still needs:

• Sufficient mounting space
• A suitable edge for the mortise
• A compatible frame and strike position
• Enough clearance from nearby handles or the gate

This is why Interlock still reviews new doors before approving the reuse.

Send Photos Before Other Work Is Completed

Where possible, send the entrance photos before another lock or handle is installed.

This may help avoid placing another fitting in a position that limits the digital lock installation area.

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What If the New Home Already Has a Digital Lock?

Some resale homes already have a digital lock installed by the previous owner.

In this situation, Interlock assesses the entrance in the same way as a digital lock replacement.

We need to understand:

• The model currently installed at the new home
• The size of its front and rear bodies
• The existing mortise cut-out
• The position of the old mounting holes
• The strike and frame condition
• Whether your reused lock can cover or work with the existing opening

The Existing Cut-Out Is Important

When the previous lock is removed, it may leave:

• Large holes
• A long mortise opening
• Mounting points that do not match your lock
• Visible marks that the reused lock cannot cover

Your current digital lock may be physically smaller or use a different mortise system.

Even though both products are digital locks, they may not be interchangeable.

Do Not Remove the New Home’s Existing Lock Yourself

Leave the existing lock installed until the replacement process has been assessed and planned.

Removing it early may:

• Leave the new home unsecured
• Damage the door
• Make it harder to understand the original installation
• Separate or lose necessary parts

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Why Might Your Existing Digital Lock Not Fit the New Door?

1. The Existing Cut-Out Is Too Large

The lock already installed at the new property may have left an opening larger than your reusable lock can cover securely.

2. The Mortise Size Is Different

Your lock may use a mortise that does not match the existing edge cut-out or strike position.

3. There Is Not Enough Door Surface

A nearby handlebar, decorative panel or narrow door section may reduce the available installation area.

4. The Door Thickness Is Unsuitable

Some lock models support only a particular range of door thicknesses.

5. The Door and Gate Are Too Close Together

The reused lock body or handle may collide with the gate or gate lock when both entrances are closed.

6. The Frame or Strike Is Different

The new entrance may not provide a suitable receiving area for the reused lock’s latch or bolts.

7. The Lock Was Designed for a Different Entrance Type

A digital lock made for one type of door, gate, glass panel or sliding entrance may not be suitable for another.

8. The New Door Has Existing Damage

Loose material, cracks, previous modifications or an unstable frame may affect safe installation.

9. The Lock’s Condition Has Changed

A lock that has been used for several years may require assessment before being moved and installed again.

Existing wear should be considered separately from door compatibility.

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Interlock’s Digital Lock Reuse Process

Step 1: Identify the Existing Lock

Send us:

• The brand and model
• A clear front photo
• A clear rear photo
• A side photo showing the mortise or lock body
• Details of any existing problems

Step 2: Assess the New Entrance

Send the five required entrance photos of the new property.

If the property already has a digital lock, show the complete existing lock and surrounding door area.

Step 3: Take Measurements Where Required

Interlock will advise whether the entrance needs measurements such as:

• Door-to-gate clearance
• Door-edge-to-handlebar distance
• Door-to-frame gap
• Door thickness

Step 4: Review Compatibility

Our team compares the existing lock specifications with the new entrance.

We assess whether:

• The lock body can fit
• The mortise can be installed
• The existing holes can be covered or managed
• The strike can be positioned correctly
• The door and gate have enough clearance

Step 5: Provide a Quotation

Once the reuse has been approved, Interlock will provide a quotation.

The standard installation fee applies because the existing lock is being installed as a service job at the new property.

Step 6: Confirm Compatibility Onsite

The installer checks the actual door, frame, cut-out and lock before permanent installation proceeds.

Step 7: Install the Existing Lock

If the lock and entrance are compatible, the existing digital lock is installed at the new home.

Step 8: Test the Lock

After installation, the lock should be tested for:

• Locking
• Unlocking
• Handle movement
• Bolt and strike alignment
• Auto-locking where supported
• Relevant electronic access functions

Depending on the model, user records, administrator settings or app connections may also need to be checked or configured for the new home.

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How Much Does It Cost to Reuse a Digital Lock?

The standard installation fee applies when installing an existing digital lock at a new property.

This is different from purchasing a new Interlock lock that may include installation as part of the product offer.

A Quotation Is Provided After Assessment

Interlock first assesses:

• The current lock
• The new entrance
• The expected installation work
• Any relevant compatibility concerns

Once the reuse is approved, we will provide a quotation for the installation.

Why Assessment Comes Before Pricing

The work required may differ depending on whether:

• The new door is uncut
• An existing mechanical lock must be replaced
• An old digital lock is already installed
• The previous cut-out matches the reused lock
• The gate or frame requires a different receiving arrangement

We therefore review the actual entrance before confirming the quotation.

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What Happens If the Reused Lock Cannot Be Installed?

Interlock’s no-fit, no-fee approach applies.

Although we assess the lock and entrance beforehand, an installer may occasionally discover an onsite condition that was not visible in the photos.

For example:

• The internal cut-out is larger than expected
• The mortise cannot be positioned safely
• There is hidden reinforcement
• The frame cannot receive the bolts properly
• The lock body interferes with another fitting
• The door-to-gate clearance is insufficient

If the Lock Cannot Be Installed

If the approved reused lock cannot be installed and the installation does not proceed, no fees are charged.

Interlock may also explain whether:

• Another model would be compatible
• The entrance needs adjustment first
• A new lock would be a more suitable option
• No suitable installation is currently possible

No Pressure to Replace the Lock

The goal of the assessment is to reuse the existing lock where possible.

If reuse is not possible, you can consider the available alternatives before deciding whether to purchase another lock.

Read more about the process:

What Happens When a Digital Lock Cannot Be Installed?

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When Is Reusing a Digital Lock Worthwhile?

Reusing the current lock may make sense when:

• The lock is still functioning properly
• The model still suits your household
• The new entrance is compatible
• You are satisfied with its access features
• The lock is not showing significant wear or recurring problems
• The installation quotation makes sense compared with buying a new lock

You Already Know How to Use the Lock

Keeping the same model may reduce the need to learn:

• A new administrator menu
• New access-registration steps
• A different app
• Different battery requirements
• Different emergency-access procedures

You Avoid Replacing a Working Product

If the lock remains suitable and compatible, reusing it may extend its useful life.

When Might a New Lock Be More Practical?

A replacement may be worth considering when:

• The current lock has recurring problems
• The lock is not compatible with the new door
• The old model no longer provides the features you need
• The new entrance requires a different lock type
• The reused lock cannot cover the existing cut-out
• The household wants to upgrade its access methods

Interlock can first assess reuse and discuss a new lock only if the existing model is unsuitable.

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What Should You Do Before Moving House?

1. Do Not Dismantle the Lock Too Early

Wait until the reuse has been assessed and the installation plan is confirmed.

Removing it too early may leave the current property unsecured or cause parts to be misplaced.

2. Record the Lock Model

Take a photo of any model label or provide the original product name where available.

3. Take Photos of the Current Installation

Photograph:

• The exterior lock
• The interior lock
• The door edge and mortise
• The strike
• The full doorway

4. Take Photos of the New Entrance

Use the same five-photo checklist for the new property.

5. Show the Existing Lock at the New Home

If the previous owner left a mechanical or digital lock, photograph it clearly before removal.

6. Report Current Lock Problems

Tell Interlock if the lock has:

• Battery-drain problems
• Alignment issues
• A loose handle
• Intermittent access
• Connectivity problems

7. Wait for Assessment and Quotation

Once the reuse has been approved, review the quotation and arrange the installation appointment.

8. Keep All Lock Parts Together

Any lock components, strike parts, brackets or accessories removed during the move should be kept safely together.

Do not discard a part simply because it does not appear important.

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What Should You Send Interlock?

Current Lock Information

• Brand and model
• Approximate age, where known
• Current operating condition
• Any existing problems

Photos of the Current Installation

• Front
• Back
• Side or door edge
• Strike
• Full doorway

Photos of the New Entrance

• Front of the new door or existing lock
• Back of the door
• Door edge and current mortise
• Strike area
• Full doorway and gate

Requested Measurements

Depending on the entrance:

• Door-to-gate clearance
• Door edge to handlebar
• Door-to-frame gap
• Door thickness

Your Moving and Installation Details

• The new property type
• Whether the door is new or previously fitted
• Whether an existing digital lock is present
• Your preferred installation period

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Digital Lock Reuse Checklist

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Frequently Asked Questions

Can I bring my digital lock to my new home?

Possibly. Interlock needs to assess the current lock model and the new entrance before confirming compatibility.

Can every digital lock be reused?

No. Reuse depends on the lock specifications, condition and compatibility with the new door or gate.

Does the lock need to be working?

The lock should be in suitable operating condition. Tell Interlock about any current faults before arranging the move.

Why do you need the exact lock model?

The model helps us identify its dimensions, mortise, installation requirements and supported entrance types.

Can a lock from a wooden door be installed on another wooden door?

Not automatically. The door thickness, cut-out, frame, strike and available installation area may differ.

Is a brand-new door easier for reuse?

An uncut door may provide more installation flexibility, but it still needs to be assessed for thickness, surface area, frame and gate clearance.

What if the new home already has a digital lock?

Interlock will assess the existing digital lock, cut-out, mortise and mounting holes before confirming whether your lock can replace it.

Can two different digital locks use the same holes?

Sometimes, but not always. Different models can have different body sizes, mounting points and mortise requirements.

Should I remove the previous owner’s lock first?

No. Leave it installed until the replacement has been assessed and planned.

Should I remove my current lock myself?

Do not dismantle it before the reuse and installation plan has been confirmed.

Do you need photos of both homes?

Yes. Photos of the current installation help us understand the lock, while photos of the new entrance help us assess compatibility.

What photos should I send?

Send the front, back, side, strike and full-doorway photos for the relevant entrance.

Will measurements be required?

Possibly. Interlock may request door-to-gate clearance, handlebar distance, door-frame gap or door thickness.

Does reinstallation have a fee?

Yes. The standard installation fee applies when reusing an existing digital lock.

When will I receive the quotation?

A quotation is provided after Interlock assesses the lock and new entrance and approves the proposed reuse.

What if the installer finds that the lock cannot fit?

If the approved reused lock cannot be installed and the installation does not proceed, no fit, no fee applies.

Will I be charged if the lock cannot be installed?

No. If the approved reuse cannot proceed because the lock does not fit, no fees are charged.

Will Interlock recommend another lock if mine cannot fit?

Interlock may explain compatible alternatives, but you can review the options before deciding whether to purchase another lock.

Is it always cheaper to reuse my existing lock?

Reusing avoids purchasing another lock, but the standard installation fee still applies. The suitability and condition of the existing lock should also be considered.

Will my fingerprints and PINs remain in the lock?

This depends on the model and whether it requires a reset or reconfiguration during the move. The administrator and user settings should be checked after installation.

Will the app still work at the new home?

App and connectivity setup may need to be checked or configured for the new property, depending on the lock model and network system.

Can I reuse a door-and-gate lock bundle?

Possibly. Both locks and the new door-and-gate entrance must be assessed, including the clearance between them.

Where should I send the assessment details?

Send them through the Interlock Singapore contact page.

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Moving House and Want to Keep Your Digital Lock?

Do not remove the lock or assume that it will fit the new door automatically.

Start by sending Interlock:

1. The brand and model of your current digital lock
2. Photos of the current installation
3. Photos of the new door, frame and gate
4. Details of the existing lock at the new home
5. Any requested measurements

Our team will assess the lock specifications and new entrance before confirming whether the existing lock can be reused.

Digital lock reuse depends on the lock model, specifications, condition, new door or gate, existing cut-out, frame design and available clearance. Photo and measurement review provides an initial assessment, while final suitability may still depend on onsite conditions.