Tenancy law differs enormously by country, state and province, and even by the type of building. This explains the machinery a lease is made of, not the rules where you live. Every screen that mentions a rule says to check your own — because yours is the one that applies.
Not a form you sign to get keys. A contract in which you buy the right to exclude other people from a space for a period.
Everything else — repairs, entry, notice, deposits — hangs off that one arrangement, and most disputes are about who may do what to a space you have paid to control.
The interesting parts are rent and dates. The expensive parts are notice periods, what counts as damage, and who fixes what.
Those are the clauses people skip.
In many places a deposit must be held in a particular way, sometimes in a separate scheme, and cannot simply be spent.
Check what applies to yours. It is a short search and it changes your position entirely.
A landlord can generally deduct from a deposit for:
Time-stamped pictures on the day you move in, and again on the day you leave, in every room.
It takes ten minutes and it is the single best thing you can do for the end of a tenancy.
Usually the landlord is responsible for the structure and the systems, and the tenant for keeping the place reasonably and reporting problems promptly.
Problems reported late can become the tenant's.
A repair asked for in person and never confirmed in writing did not, in practice, happen.
A short message with a date is the whole technique.
Most places require notice before a landlord enters, except in an emergency.
How much notice, and what counts as an emergency, is local — but the principle is nearly universal.
Which of these should exist in writing?
Tap an item, then a bucket
Both sides usually have to give notice, of a set length, in a set way. Getting the length or the method wrong can cost a month's rent.
Most places have a government or tribunal page setting out tenant and landlord obligations plainly, for free.
That page, not a letting agent, is the thing to read.
A lease buys control of a space. Deposits cover damage, not ageing. Photographs and written messages are what make either provable. And the rules that matter are the local ones.