Most lock work in E1 happens on a door that more than one household uses. Converted warehouses with a single street entrance serving thirty flats, Victorian terraces split into three or four tenancies, and purpose-built blocks with an entry phone panel all share the same characteristic: the lock on the outer door is nobody's personal property, and the lock on the flat door has to satisfy fire regulations as well as the occupier.
Who is responsible for the outer door
A communal street door, its closer, its entry panel and the fobs that open it normally sit with the freeholder or managing agent. A leaseholder or tenant cannot instruct a change to it, however inconvenient the situation. A locksmith can attend, diagnose and quote, but the instruction has to come from whoever holds the obligation under the lease. Where the outer door has been forced, the sensible order is to make it secure immediately, then let the managing agent decide on the permanent repair.
Key control in shared houses
High-occupancy properties leak keys. Every tenancy change adds another set that may or may not have been returned, and standard cylinder keys can be copied at any kiosk. A restricted key system solves it properly: the keys are patented, copies are only issued against a registered card, and the landlord knows exactly how many exist. Where several doors need to work together, a suite can be designed so each tenant's key opens the street door and their own room, while one master key opens everything for the landlord.
Getting out, not just in
A flat entrance door is also an escape route, and that changes which lock is appropriate. A door that needs a key to open from the inside is a hazard in a smoke-filled hallway and will fail a fire risk assessment. The usual specification is a lock operated by a thumbturn or internal handle without a key, so anyone can leave immediately, while still resisting attack from the landing. Retrofitting a second deadlock to a flat door because of a burglary often quietly breaks that principle.
Old timber doors and what they will carry
Original panelled doors in the older terraces are frequently thinner than a modern door and have been rebated, planed and repainted for a century. A heavy modern mortice lock cut into a thin stile can weaken the door more than it secures it. The better answer is often a rim lock properly backed with a reinforcing plate and a frame that has been repaired first, since the frame and hinges fail long before the lock body does.
When the problem is not the lock
A door that has dropped, swollen or lost its closer will not throw its bolts cleanly, and the natural reaction is to force the key until something breaks. That is carpentry rather than lock work, and adjustment, easing and rehanging is covered by fully insured minor repairs in East London. It is worth doing promptly, because a communal door propped open or a flat door that will not shut leaves a hallway cold and damp for months, and persistent damp in that hallway is dealt with by East London mould removal specialists.
Opening a property in an emergency
Water coming through a ceiling from an empty flat above is a common reason for a locksmith call-out, and it is a job with two halves: gaining entry lawfully, and then stopping the leak. Authorisation still has to come from the right person, and the lock is normally made secure again the same visit. The pipework side is separate work, and what the service covers covers it for properties further out along the Lea Valley.
What gets agreed before any work begins
In a building with shared responsibility the paperwork matters as much as the tools. Expect to be asked for proof that you are entitled to access the property, and expect a locksmith to decline politely if it is not forthcoming. Agree in advance whether entry will be attempted non-destructively, what the attendance charge covers, and what any replacement parts are. Keep the receipt and the old cylinder, since managing agents frequently ask for both. Standards, response arrangements and the range of work are listed on what the service covers.