The Mistakes Self-Managing Landlords Make in Year One (And How to Fix Them)

So you've decided to manage your own rental property. Good. You're saving money, you're taking control, and you're not paying someone else a percentage of your rent to forward your emails.

But here's the thing nobody tells you: the first year of self-managing is where most landlords quietly make the mistakes that cost them later. Not because they're bad landlords — but because nobody laid out the pitfalls clearly before they started.

This post does exactly that.

Mistake 1: Assuming a Generic Tenancy Agreement Is Good Enough

You found a free AST template online. It looks official. It has clauses. Job done.

Not quite. Generic tenancy agreements are often outdated, missing property-specific clauses, or simply not aligned with current legislation. If your agreement doesn't reflect the actual conditions of your tenancy — things like pet permissions, garden maintenance responsibilities, or permitted alterations — you'll have no solid legal footing when a dispute arises.

The fix: Use a current, compliant tenancy agreement and add clauses that are specific to your property. If you're unsure, have it reviewed before you hand it over. A small cost upfront saves a much larger one later.

Mistake 2: Not Serving the Right Documents at the Right Time

Before a tenant moves in, there's a list of documents you're legally required to provide. Most self-managing landlords know about some of them. Very few know about all of them — or that the timing matters.

Here's what must be served before or at the start of the tenancy:

The current version of the How to Rent guide (it updates regularly — make sure yours is the latest)

A valid Gas Safety Certificate (within 28 days of the start of tenancy, or before if you have it)

The Energy Performance Certificate

The Electrical Installation Condition Report

Deposit protection information (prescribed information must be served within 30 days of receiving the deposit)

Failing to serve any of these correctly doesn't just create admin headaches. It can invalidate a Section 21 notice, expose you to financial penalties, and significantly weaken your legal position if a dispute goes to court.

The fix: Build a pre-tenancy checklist and work through it every single time. Don't rely on memory.

Mistake 3: Taking a Deposit Without Protecting It Properly

You collected the deposit, it went into your current account, and you made a mental note to sort it out. Six weeks later, you're not entirely sure you ever did.

This is more common than most landlords would like to admit — and the consequences are serious. Deposits must be protected in a government-approved scheme within 30 days of receipt. The prescribed information must also be served to the tenant within the same window.

Get this wrong and a tenant can apply to court for a penalty of up to three times the deposit value. They can also challenge any Section 21 notice you later try to serve.

The fix: Protect the deposit the same week you receive it. Set a reminder if you need to. Use one of the three government-approved schemes — MyDeposits, the Deposit Protection Service, or the Tenancy Deposit Scheme — and serve the prescribed information immediately after.

Mistake 4: Skipping the Inventory (or Doing It Badly)

A rushed inventory done on a phone camera with no written record is not an inventory. It's a collection of photographs that will mean almost nothing if a deposit dispute goes to adjudication.

A proper inventory is a detailed, dated, signed document that records the condition of every room, every fixture, and every item of furniture at the start of the tenancy. It needs to be signed by the tenant at check-in — ideally with their comments noted.

Without this, you cannot fairly deduct from a deposit at the end of the tenancy. Full stop.

The fix: Do a thorough written inventory before the tenant moves in. Include photographs, dated and labelled by room. Get it signed. Keep a copy. Do a check-out inspection against the same document when the tenancy ends.

Mistake 5: Going Quiet Between Inspections

Some landlords do a great job at the start of a tenancy and then essentially disappear for two years. They collect rent, they respond to the occasional message, and they assume no news is good news.

It usually isn't.

Properties deteriorate quietly. Tenants let small maintenance issues become large ones because they don't want to bother the landlord. Condensation becomes damp. A small leak becomes a ceiling.

Regular inspections — typically every three to six months — are not just good practice. They're part of your legal obligation to keep the property in a good state of repair. They also give you the opportunity to catch problems early, maintain the relationship with your tenant, and document the condition of the property throughout the tenancy.

The fix: Schedule inspections into your calendar at the start of the tenancy and give proper written notice (at least 24 hours, but more is better). Keep a short written record of what you found and any actions agreed.

Mistake 6: Handling Rent Arrears Too Slowly — or Too Aggressively

Rent is a day late and you're already drafting a formal letter. Or it's three weeks late and you still haven't said anything because you don't want to make things awkward.

Both are wrong.

Acting too fast can damage the tenant relationship over what might be a one-off banking issue. Acting too slowly gives arrears time to build and puts you in a much weaker position legally.

The fix: Have a clear policy before arrears happen. If rent is late by a few days, a friendly message is appropriate. If it moves into a second week, a formal written notice of arrears is the right step. If it continues, you need to understand the legal process for recovering possession — because it takes time, and you want to start the clock as early as possible.

Mistake 7: Not Keeping Records of Everything

You told your tenant verbally that they could keep a cat. They told you verbally that they'd sort the garden. Six months later, there's a dispute about both — and neither of you has a single piece of written evidence.

In landlord-tenant disputes, verbal agreements are almost impossible to enforce. Written records — emails, messages, signed letters — are what protect you.

The fix: Put everything in writing. This doesn't have to be formal. A simple email confirming a conversation is enough. Keep a folder — digital or physical — for each tenancy. Store the tenancy agreement, all legal documents, inspection reports, maintenance records, and any communications that might be relevant later.

The Bottom Line

Self-managing your rental property is absolutely achievable — but it rewards the landlords who are organised and informed. The mistakes above aren't made through laziness. They're made because no one laid out the full picture clearly at the start.

Now you have it.

If you want a structured, step-by-step guide to setting up and running a self-managed tenancy from start to finish, the Circle Doors Self-Managing Landlord Complete Guide offers everything in plain English — checklists, templates, scripts for common situations, and guidance on staying legally compliant throughout.

👉 Get the Self-Managing Guide here