Renters often notice security problems but hesitate to make changes because they do not want to damage the property or lose their deposit. The good news is that many improvements are reversible, and the first step is usually a careful inspection rather than a new lock.
Photograph the front door, lock, frame, letterbox, windows and balcony doors when you move in. Note anything loose, damaged or difficult to operate and send the details to the landlord or letting agent in writing.
This gives you a record of the starting condition and makes it easier to request repairs. If a door does not lock properly, report it promptly rather than waiting for a failure.
Check the tenancy agreement and ask the landlord or agent before replacing a lock, fitting a chain or drilling into a door. Keep written permission for any change that is approved.
For a planned lock change, a locksmith can often explain options that preserve the existing hardware or allow it to be restored later. See our lock change service if you need help understanding the options.
Ask when the lock was last changed and whether the landlord, previous tenant, managing agent or contractors hold copies. You may not get a complete answer, but it is worth asking.
If keys are missing or the property has had many occupants, request a lock change or rekeying in writing. Do not copy keys for other people without agreeing how they will be returned at the end of the tenancy.
The door should close fully and the key should turn smoothly without lifting, pushing or slamming the door. Check that the latch engages and that the frame is not split or loose.
Do not force a stiff key. A broken key can leave you locked out and may damage the cylinder or multipoint mechanism. For urgent problems, use the emergency locksmith service.
You can often improve everyday security by:
Avoid portable devices that block a fire escape or prevent other residents from leaving safely. Never wedge open a communal entrance.
Test accessible windows and balcony doors, including handles and catches. Report broken locks, loose handles or windows that do not close fully. Do not install a permanent restriction or security bar without permission, especially where it could affect escape during a fire.
The landlord, agent and tenant may have different responsibilities depending on the tenancy and the type of repair. For legal or tenancy questions, use current GOV.UK, council, Shelter or Citizens Advice guidance. A locksmith can explain the condition of the door and lock, but cannot decide a legal dispute between landlord and tenant.
Improving a rented flat's security starts with documentation and communication. Make the existing locks work properly, request repairs early, and get permission before changing anything that belongs to the property.
It helps to describe security concerns in two groups. An urgent defect prevents the property from being secured or used safely: a front door that will not lock, a communal entrance that remains open, a broken ground-floor window catch or damage after an attempted break-in. Report these immediately through the landlord or agent's emergency process.
An optional improvement might be a better light, a video doorbell or a different access system. These can still be worthwhile, but they should not distract from a faulty door or missing key. In your message, explain the symptom, when it started and whether the property can currently be locked.
The check-in inventory may focus on decoration and furniture, so create your own small security record. Photograph each external door from inside and outside, the frame, handles, cylinder, letterbox and visible damage. Test accessible windows, balcony doors, the intercom and any communal fob.
Record how many keys and fobs you received and what each one operates. If a key is missing from the inventory, ask about it immediately. Keep the photographs and messages with the tenancy documents rather than only on a phone that could be lost.
This record is useful for two reasons. It shows the condition at the start of the tenancy, and it helps you notice gradual changes such as a handle becoming loose or a door needing more pressure to close.
Instead of asking only “Is the flat secure?”, ask specific questions:
The answers may not prove that every copy is accounted for, but they create a clear record and help you decide whether to request a change. If the property is shared, agree who can authorise duplicate keys and how they will be collected when someone leaves.
Your private front door and the building's communal door have different roles. You may have more control over the lock to your own flat, while the freeholder or managing agent usually controls shared entrances. Do not alter a communal lock or copy a restricted fob without permission.
Report a communal door that fails to latch, is routinely wedged open or has a broken closer. Include the time and a photo if safe to do so. Avoid confronting unknown people in a shared hallway; use the building's reporting or emergency process.
Inside the building, do not assume that everyone who reaches your floor is authorised to enter your home. Use the viewer or intercom, and verify unexpected contractors with the landlord or managing agent before opening the door.
Some flat entrance doors are part of the building's fire-safety system. Drilling, cutting, changing closers or adding unsuitable hardware can affect how the door performs. Do not remove a self-closing device or make a permanent alteration without written approval and appropriate advice.
Portable security products also need thought. A device that makes the door difficult to open from inside may create a problem during an emergency. Everyone in the flat, including children, guests and people with reduced mobility, should be able to follow the normal escape plan.
Many useful changes are about behaviour and visibility:
These measures do not require drilling, but they still need to fit your tenancy and building rules. If a camera or video doorbell could record shared areas, check current privacy and building guidance before installation.
Good lighting helps you identify visitors and find keys without standing at the entrance for a long time. Report failed communal lights, especially near stairs, bins and entrances. Inside the flat, timers or smart plugs may help create a normal pattern when you are away, provided they are used safely and according to the manufacturer's instructions.
Avoid announcing exact travel dates publicly. Ask a trusted person to deal with visible mail or deliveries if the tenancy permits it. Do not hide a key near the entrance for a visitor; agree a safer handover method.
Ground-floor and easily accessible windows deserve the same attention as the front door. Check that each one closes fully and that handles or catches are not loose. A balcony reached from a shared roof, fire escape or neighbouring structure may be more accessible than it appears.
Do not permanently restrict a window or balcony door that forms part of an escape route. Report faults rather than improvising a bar or screw. If a child-safety restriction is needed, discuss a suitable product and responsibility with the landlord.
Keep furniture and valuable electronics away from direct view where practical. Security is helped by reducing easy opportunities, but the flat must remain comfortable and safe to live in.
If the building uses an app, smart lock or connected intercom, confirm that your account is unique and that previous tenants have been removed. Change any code you are authorised to control. Use a strong password and additional account security where available.
Ask what happens during a power, network or battery failure. A digital system needs a recovery process, and residents should know whom to contact. Never share a permanent code with a delivery driver or post it in a group chat that includes former occupants.
When moving out, remove your personal account or device only according to the agreed process. Do not reset shared equipment in a way that locks out other residents.
Tell the landlord, agent or building manager promptly, especially if the item identifies the address or opens a communal entrance. Explain where it was lost and whether it was stolen. Follow the written process for replacement and ask whether access needs to be cancelled or the private lock reviewed.
Our lost house keys guide covers the immediate risk questions. If you are locked out, use the contact specified in the tenancy where one exists and ask for the cost before work starts.
Do not change a communal system yourself. For your own door, obtain written agreement when required and keep the old hardware if the landlord asks for reinstatement at the end of the tenancy.
A useful message is factual and specific. Include:
For example: “The flat entrance closes, but the handle will no longer lift far enough to turn the key. The mechanism works with the door open but not when closed, and the flat cannot currently be secured.” This is more actionable than “the lock is broken”.
Keep the reply and any appointment details. If the condition becomes worse, update the report rather than opening several unrelated conversations.
Unless there is an immediate safety emergency, contact the responsible party before instructing work. Ask who will authorise and pay, whether a specific contractor must be used, and what evidence is required. An unauthorised permanent change can create a dispute even when your concern was reasonable.
If urgent work is necessary, request a written description and itemised receipt. Keep removed parts if appropriate and photograph the completed repair. For legal questions about reimbursement or landlord obligations, obtain current advice from an appropriate housing service rather than relying on a tradesperson to interpret the tenancy.
Agree simple rules with housemates. Do not lend communal keys without telling one another, leave the entrance on the latch for convenience or share codes with short-term visitors. When a housemate moves out, confirm that keys and fobs have been returned and that digital access is removed.
Bedrooms may have separate locks in some properties, but alterations can interact with licensing, fire safety and tenancy rules. Ask before adding or replacing them. Privacy between housemates matters, but so does a safe route out of the property.
Before leaving, close and lock doors and windows using their normal operation. Check that smart devices have power, cancel obvious deliveries and avoid posting that the flat will be empty. Tell only the people who need to know.
If a trusted person will check the property, agree how they receive and return the key. Do not create a last-minute hiding place outside. Make sure emergency contact details for the landlord or building manager are available to the person helping.
The practical and legal answer depends on the tenancy, property and reason for the change. Check the agreement and obtain current housing advice. For permanent changes, written communication with the landlord or agent is the safest starting point.
Ask how retained keys are controlled and when access may be used. Questions about notice, privacy or unauthorised entry should be directed to a current housing-advice source.
Usually the managing agent, freeholder, council or housing provider controls communal systems. Report the fault through the building process and explain if the door cannot secure the building.
Ask permission where required and consider privacy, shared areas, power, attachment method and building rules. A removable product is not automatically permitted or appropriate.
Do not force it. Report the symptom early and arrange an inspection before the key snaps or the door becomes unusable.
Start by documenting the property, accounting for keys and reporting defects. Improve daily habits and visibility without obstructing exits. Ask before permanent alterations, keep communication in writing and use qualified help when the door or lock cannot operate normally.
Security in a rented flat is shared across the tenant, landlord and building management. Clear evidence and early reporting are often the fastest route to a safer home without risking the deposit.
Published by Team Locksmith
Editorial team
Published by the 24hrslocksmith editorial team and checked against our live service pages, pricing, and coverage.