Signs a system needs replacing
Access systems tend to fail slowly. They keep opening doors long after they have stopped being manageable, which is why the decision gets deferred until something forces it.
- The management software only runs on a PC nobody dares update
- Replacement readers or boards are no longer manufactured
- Nobody currently on site knows how to add or remove a user
- Credentials cannot be revoked, so lost fobs stay live
- The entry log is unreliable or was never working
- Doors have been propped or bypassed as a workaround
- The intercom handset system has failed and cannot be repaired
- The vendor has gone, or no longer supports the platform
Revocation failure is the urgent one
If lost or returned credentials cannot actually be revoked, your access control is decorative. Every fob ever issued still opens the door. That is the point at which replacement stops being a budget conversation.
What can usually be kept
The expensive part of an access system is rarely the electronics. It is the cable in the walls and the hardware in the doors. A good retrofit reuses as much of that as it safely can.
We survey what is there before quoting a replacement, because a proposal that assumes a full rewire when the existing cable is fine is a proposal that costs you money for nothing.
Frequently reusable
- Cable runs to readers and door hardware, if the type is adequate
- Electric strikes and mag locks in working condition
- Door position sensors and request-to-exit devices
- Power supplies, if capacity and battery backup are adequate
- Enclosures and containment at the controller location
Usually replaced
- Readers, where the credential technology is outdated or insecure
- Controllers and boards no longer supported
- Management software and any PC it was tied to
- Credentials, where the old format can be trivially cloned
Keeping doors working during the change
In an occupied building the constraint is not technical, it is that people have to get in and out throughout. A changeover that leaves a main entrance unusable for a day is not acceptable in most properties.
We phase the work door by door and keep the old system running on doors that have not been converted yet, so there is never a period where nobody can enter.
- Door-by-door migration rather than a single cutover
- Old and new running in parallel during transition
- Main entrances converted outside peak hours
- Temporary credentials issued before old ones are retired
- Fire alarm interfaces re-tested on every converted door
How an upgrade runs
- 1
Survey what exists
We document every door, trace the cabling, identify the hardware, and establish what still works. Older systems are often undocumented, so this stage is the one that determines whether the quote is realistic.
- 2
Propose reuse and replacement
You get a clear split: what is being kept, what is being replaced, and why. That is what makes competing quotes comparable.
- 3
Phased conversion
Doors are converted in an agreed order, with the old system live on the remainder. Credentials are re-issued before old ones are switched off.
- 4
Commission, test, and hand over
Fail-safe behaviour and fire alarm release tested on every door, administrators trained, and documentation produced — usually for the first time.
Intercom replacement in multi-unit buildings
Older buildings around Boston commonly have handset intercoms wired to every unit. When those fail, replacing like for like means running new cable to every apartment, which is disruptive and expensive.
Modern video intercoms route calls to residents' phones instead, which means the work concentrates at the entrance rather than throughout the building. In an occupied building that difference is usually decisive.
- Work concentrated at the entry panel rather than every unit
- Residents answer on their phones, wherever they are
- Remote unlock for deliveries and visitors
- Entry events logged with video
- No in-unit handsets to maintain or replace on turnover
Documentation, which is usually missing
The most common thing we find during a survey is that nothing was ever written down. No door schedule, no cable records, no record of who holds which credential.
That is what makes an ageing system unmanageable long before the hardware fails. Every upgrade we complete includes documentation, so the next person is not starting from scratch.
Related access systems services
Jobs we're often asked about alongside this one.
Frequently asked questions
- Do we need to rewire the whole building? +
- Usually not. Cable runs, door hardware, and power supplies are often reusable. We survey what exists before quoting, because a proposal that assumes a full rewire when the cabling is fine costs you money for nothing.
- Will doors stop working during the upgrade? +
- No. We phase door by door and keep the old system live on doors not yet converted. Main entrances are converted outside peak hours, and new credentials are issued before old ones are retired.
- Our system still works. Why replace it? +
- The usual reasons are not failure but manageability: parts no longer available, software that will not run on a supported operating system, or credentials that cannot be revoked. That last one means every fob ever issued still opens the door.
- Can we replace an old handset intercom without wiring every apartment? +
- Yes, and that is normally the reason to change. Modern video intercoms route calls to residents' phones, so the work concentrates at the entrance instead of running new cable to every unit.
- Can the upgrade be phased across budget years? +
- Yes. A common approach is converting main entrances first, then internal and secondary doors in a later phase. We design so the second phase connects without redoing the first.
- What if nobody knows how the existing system was set up? +
- That is the normal situation, not the exception. Part of the survey is tracing what is actually there. Every upgrade we complete includes documentation, so the same problem does not recur in ten years.