Commercial
Cost to Add Access Control to an Existing Door
Retrofit Cost Guide
Short answer
Adding access control to an existing door can be straightforward on some doors and awkward on others. The cost usually turns on what lock is already there, whether the frame can accept a strike, whether the door is glass or aluminium, and whether the opening is part of a public, exit, or fire-related path.
For an existing office or warehouse door, the question is rarely just "how much is the reader?" The real question is whether the current lock and frame give the installer a clean path to add the right release hardware, power supply, and exit method.
Some doors can be upgraded neatly. Others cost more precisely because someone is trying to keep old hardware that does not suit a proper access-control layout.
On this page:
What this means in practice
Retrofit costs usually rise when the existing door was not originally planned for electronic release. That can mean the frame does not suit a strike, the glass door needs a different lock approach, the existing lock is not compatible, or the site needs better egress hardware once the access layer is added.
| Existing door situation | Typical cost direction | Why it changes |
|---|---|---|
| Standard timber or metal staff door with suitable latch | Often the cleanest retrofit path | A strike or suitable lock method may fit without major rework. |
| Aluminium shopfront door | Often medium or higher | Narrow stile hardware, latch style, and reader position all matter. |
| Frameless or mostly glass door | Often higher again | The lock path, brackets, and wiring strategy are different. |
| Door with unknown old lock or patched repairs | Can become unpredictable | Time is spent identifying what can stay and what should be replaced. |
| Door on an exit path or fire-related opening | Needs careful assessment | The egress and safety question may be more important than the cheapest hardware path. |
If the customer wants the lowest cost and the door is awkward, the right answer is not always to force the old lock to stay. Sometimes a cleaner controlled lock path costs less overall than trying to make incompatible hardware behave like an access-control system.
Real-world examples
Existing timber office door with standard latch
A basic office door with a normal latch and a usable frame can often take an electric strike quite cleanly. In that case the retrofit cost is usually driven by the strike, controller, reader, power supply, and labour rather than by major door rework.
Older glass clinic entry with mixed hardware
A glass clinic entry with patched hardware, a floor closer, and a public-facing release path often costs more because the installer first has to work out what should remain. This is where trying to save the old lock can be the expensive choice.
What usually works
- Send photos of the door edge, frame, closer, existing lock, and inside exit side before buying parts.
- Price the retrofit as a full door system: lock, controller, reader, power supply, exit method, and labour.
- Be open to replacing unsuitable old hardware if it gives a cleaner long-term result.
What to be careful with
- If the door is part of an exit path, fire door, public entry, or commercial tenancy, do not guess the hardware.
- Do not assume the existing lock will work just because it looks heavy-duty.
- Glass doors, aluminium frames, automatic doors, and double doors need more specific planning.
Common mistakes
- Buying a reader first and assuming the door can be figured out later.
- Keeping an unsuitable old lock only because it is already there.
- Ignoring the inside exit method and focusing only on entry.
Buying considerations
- What lock is on the door now and whether the frame suits a strike, maglock, drop bolt, or another controlled lock path.
- Whether the site wants cards, PIN, mobile access, or a simple one-door entry method.
- Whether the retrofit needs logging, software, or only basic local control.
- Whether the opening is part of a public-facing or safety-related path.
When to ask for help
If the door is already installed, this is one of the strongest cases for photo-based help. A locksmith, installer, electrician, or builder may need to look at the frame, latch, closer, and exit side before anyone should commit to parts.
- Send a full door photo, the lock edge, the frame strike area, and the inside handle or exit side.
- If the door is glass or aluminium, send the top and side rail detail as well.
- If the door is part of an exit path or fire-related opening, have the egress method checked before ordering lock hardware.
Door photo help
Not sure which parts suit your door? Send us a photo of the door, lock area, frame, and where you want the reader to go. We can help point you toward the right controller, reader, lock, exit button, and power supply.
Safety and compliance
Access control affects how people enter and exit a building. For commercial, public-access, exit-path, or fire-door applications, have the door hardware and egress method checked by a suitably qualified professional.
Related guides
Relevant products and categories
- Access Control Products - Main category for controllers, readers, kits, locks, and related hardware.
- Electric Strikes - Strike options for aluminium shopfronts, latch-based doors, and many standard commercial frames.
- Maglocks - Common on some glass, aluminium, and selected gate or double-door applications.
Frequently Asked Questions
- Can I add access control to my existing door?
Often yes, but the answer depends on the door, frame, existing lock, exit method, and whether the opening is part of a public or safety-related path.
- Is retrofitting access control always cheaper than replacing the lock hardware?
No. Some retrofits are clean and economical. Others become more expensive because the old hardware is the part causing the problem.
- What makes a retrofit cost rise quickly?
Glass doors, aluminium shopfronts, exit-path doors, unknown old locks, and jobs where the inside release method has not been thought through.
- Can I keep my existing lock?
Sometimes. Sometimes the existing lock is suitable, and sometimes it is exactly what makes the job messy. This should be assessed from photos or site inspection.
- What photos should I send before buying?
Send the whole door, the frame, the lock edge, the inside exit side, and the area where the reader would go. If it is glass or aluminium, close-up rail and frame photos help.
- Do exit-path or fire-related doors need extra care?
Yes. Access control affects how people enter and exit, so the lock, release method, power supply, and egress path need to be considered together.