Apartment Access Control in Memorial, Houston

Why Memorial projects start with what is already on the wall

Memorial is an established part of west Houston. The single-family Memorial Villages are small cities of their own; the multifamily sits mostly along the corridors: Memorial Drive, the Katy Freeway frontage, Gessner, and the Memorial City and CityCentre districts. Much of it predates modern access control, and the equipment on it was added one piece at a time by whichever vendor the manager called that year.

On a first visit to a Memorial property we typically find some mix of:

• A telephone-entry callbox that dials residents over a copper landline, with a directory last updated by hand.
• 125 kHz proximity fobs from two or three different eras, some of them unauthorized copies.
• Pool and laundry gates on standalone keypad locks whose code has never changed.
• A controller in a closet with no documentation, managed by software on an aging office PC.
• Garage gates and elevator controls added later by other vendors that do not talk to the door system.

None of that means everything has to go. It does mean a proposal written without opening the panels is a guess.

The retrofit walk: what we inspect before quoting

1. Controller and software. Make, age, whether the manufacturer still issues updates, where the database lives and who holds the administrator password. Unsupported software on an unpatched PC is a security issue by itself.
2. Cable to each door. Whether it can carry a modern reader protocol and lock power, or whether it is undersized, spliced or water-damaged. Reusing sound cable in finished corridors is often the largest saving in a retrofit.
3. Lock hardware. Maglocks, strikes and electrified locks, whether each suits its door’s fire rating and egress path, and whether the exit buttons and fire alarm release actually work today.
4. Power supplies and batteries. Age, load, and whether the backup batteries have ever been replaced.
5. Credential population. Active fobs versus units. A 200-unit property with 900 active fobs has a revocation problem, not a hardware problem.
6. Network path. Whether the system reaches the internet securely for remote management, or shares a flat network with the office computers and resident Wi-Fi.

Keep, reuse or replace: a component-by-component look

Multi-technology readers help here: they read old proximity fobs and new encrypted credentials at the same time, so residents do not all have to be reissued on one weekend.

Telephone entry on landlines the phone company is retiring

Many older Memorial callboxes still rely on a copper phone line: a visitor enters a code, the box dials the resident, and the resident presses a digit to release the gate. Carriers keep retiring copper service, and when a line fails or is migrated, the callbox can go silent without any alert to the office.

Three ways forward, from least to most change:

• Keep the callbox and replace the landline with a cellular communicator. Least disruptive, but only sensible if the box itself is healthy.
• Replace it with a cellular or network callbox that rings residents’ mobile phones or an app, often with video.
• Move to a cloud video intercom tied to the access platform, so the directory follows the resident list and every visitor entry has an image attached.

Garage entrances and gates tucked between concrete buildings can have poor reception even where phones work fine in the lobby, so we measure signal at the mounting spot before specifying anything cellular.

Copied fobs, and why 125 kHz credentials are the weak link

A classic 125 kHz proximity fob transmits a fixed number with no encryption. Cheap duplicators, including kiosks in shopping centers, copy one in seconds. For a manager that makes the number of working fobs unknowable: former residents, their friends and short-term guests can all hold copies of a fob that was issued once.

The cure is encrypted 13.56 MHz credentials or mobile keys on residents’ phones, which resist that kind of copying. Done well, the changeover is staged. Multi-technology readers go up first, new credentials are issued unit by unit during a set window, and on an announced date the old fob technology is switched off entirely. Many managers use the changeover to reconcile the resident roster, since only verified occupants receive new credentials.

Mid-rise specifics: elevators, garages and post-tensioned slabs

• Elevator floor restriction. Limiting a resident’s credential to their own floor plus the amenity levels requires a reader in each cab, interface wiring in the elevator controller and the elevator contractor on site. Firefighters’ emergency operation must always take priority over access control, and we design around it rather than through it.
• Structured garages. Garage gates and barrier arms cycle constantly, low ceilings restrict reader placement, and concrete blocks radio signals. Garage entries usually need a hard-wired network path.
• Post-tensioned concrete. Many Houston mid-rises sit on post-tensioned slabs whose steel tendons are under high tension. Drilling or coring blind can cut one. We scan before penetrating, reuse existing sleeves where possible and coordinate with the building engineer.
• Rated corridors. Every new penetration through a fire-rated wall is sealed with a listed firestop system. Missing firestop is a common inspection finding after low-voltage retrofits.

Condominium boards and management companies: who approves what

Memorial has many condominium and townhome associations alongside rental properties. In a condo, entry control is a common-element decision: the board approves the budget, the management company runs daily operations, and owners who lease their units create turnover inside an owner-occupied building.

• Get the scope approved by whoever controls the common-element budget before the design is final, so a board meeting is not required for every change.
• Decide who administers credentials (the manager, a board member or both) with different permission levels. The audit log records who did what.
• Set a policy for owner-landlords: when their tenant changes, the departing tenant’s credentials are removed the same day.
• If owners prefer privacy, the callbox directory can list unit numbers or codes instead of names.

Near Buffalo Bayou, keep controllers out of the water

Buffalo Bayou runs along the southern side of the Memorial area, and properties near it flooded in 2017 when water was released from the Addicks and Barker reservoirs. Access equipment in ground-floor closets and garage levels was lost along with everything else. In retrofits near the bayou, and in any building with a low garage, we mount controllers, power supplies and network gear as high as the room allows, avoid lowest-level closets when there is a choice, and document the layout so a restoration crew can bring doors back online once the water is gone.

How the retrofit is sequenced, and what moves its cost

After the audit, EVOTECH delivers a written scope marking each component keep, repair or replace, with an itemized quote to match. Work is sequenced so the property is never without a working entrance: new controllers and readers go in beside the old system, doors migrate in groups, and old hardware comes out last. We close by testing each door’s fire alarm release and power-loss behavior, training the office on the platform, and handing over the documentation the previous vendor never left.

The biggest cost drivers are:

• how much existing cabling passes testing and can stay;
• the number of doors, gates, garage entries and elevator cabs;
• elevator contractor time, if floor restriction is in scope;
• the size of the credential changeover and the credential type chosen;
• concrete scanning, coring and firestopping in rated construction;
• whether the platform is cloud-managed with a subscription or runs on-premise.

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