5 Costly Mistakes Landlords Are Making in 2026 - And How to Avoid Them

Being a landlord in 2026 isn’t passive. It’s strategic.

With the Renters’ Rights Act nearing implementation, compliance tightening, and tenant expectations evolving, the margin for error is smaller than it used to be. Yet many landlords - particularly those managing their own properties - are still making avoidable (and expensive) mistakes.

The good news? Most of them are entirely preventable.

Here are five of the most common - and how to stay ahead.

1. Relying on Outdated Tenancy Agreements

Many self-managing landlords are still using an Assured Shorthold Tenancy agreement they downloaded years ago - sometimes decades ago.

The problem? The legal landscape has changed significantly since then.

Deposit protection rules, prescribed information, How to Rent guides, right to rent checks, electrical safety regulations, and now the Renters’ Rights Act - all of these have altered the compliance framework.

An outdated tenancy agreement can mean:

• Clauses that are no longer enforceable
• Missing mandatory wording
• Incorrect notice periods
• Weak possession grounds
• Ambiguous rent review clauses

And simply “reviewing” a document isn’t enough if you’re not confident in what you’re looking at.

What You Should Actually Do

If your agreement is more than a few years old, assume it needs replacing.

Your safest options are:

• Use an up-to-date template from a recognised landlord body such as the NRLA
• Use professionally drafted, regularly updated tenancy agreements
• Or take legal advice if you’re unsure how the new legislation affects you

Emoov offers a compliant tenancy agreement option for landlords who want a straightforward, up-to-date document without the hassle of drafting or sourcing one independently.

Do not rely on:

• Free downloads from random websites
• Old Word documents reused between tenancies
• Agreements that haven’t been updated to reflect current safety requirements, deposit protection rules, prescribed information requirements, and the upcoming Renters’ Rights Act reforms.

With Section 21 likely to be removed, possession will depend much more heavily on having the right documentation and evidence in place from the start.

If your paperwork isn’t watertight, regaining possession could become far more difficult.

2. Poor Tenant Referencing

When demand is high, it can be tempting to move quickly and accept the first suitable applicant.

But rushed referencing remains one of the most expensive landlord mistakes.

Issues typically arise from:

• No formal affordability checks
• Not verifying employment properly
• Skipping previous landlord references
• Relying on “gut feeling” instead of credit checks

A problematic tenancy can cost months in lost rent, legal fees and stress.

Even experienced landlords get caught out when they don’t carry out structured checks.

What You Should Actually Do

Referencing should always include:

• Credit history
• Employment verification
• Income affordability checks
• Previous landlord reference (where possible)

If you don’t want the admin or aren’t confident handling it yourself, using a structured referencing service can provide clarity and documentation from the outset.

Emoov offers tenant referencing for £20 [or included in our Let Plus Service], giving landlords a straightforward, affordable way to carry out proper checks without relying on guesswork.

Compared to the cost of a single missed rent payment, that’s a very small investment.

3. Underestimating EPC and Property Standards

Energy efficiency is no longer just a “nice to have”.

While EPC requirements may tighten further in the coming years, tenants are already prioritising lower energy costs. Properties with poor insulation or outdated heating systems can struggle to compete - especially in higher price brackets.

Landlords who ignore maintenance or delay upgrades often face:

• Longer void periods
• Rent negotiation pressure
• Lower long-term asset value

Action step: Review your EPC rating. If you’re at D or low C, consider insulation upgrades, LED lighting, draught-proofing or heating improvements before they become mandatory.

Proactive improvements are almost always cheaper than reactive compliance.

4. Starting With the Wrong Rent

Overpricing doesn’t just affect sellers - it impacts landlords too.

If a rental sits empty because the price is optimistic, you lose income immediately. Two or three weeks of vacancy can wipe out any small rent increase you hoped to achieve. On the other hand, underpricing leaves money on the table.

The key is balance.

Look at:

• Comparable local listings
• Recently let properties (not just advertised rents)
• Time on market for similar homes

Launching at a realistic figure often generates stronger early interest and better-quality applicants.

Momentum matters in lettings just as much as sales.

5. Failing to Plan Ownership Structure and Tax Reporting

One of the biggest shifts in recent years has been the rise in limited company (SPV) ownership.

Many landlords have moved - or are moving - towards company structures for tax efficiency, particularly since mortgage interest relief changes.

However, some landlords:

• Incorporate without professional advice
• Transfer properties without understanding CGT or SDLT implications
• Fail to consider long-term portfolio strategy
• Or overlook the administrative responsibilities that come with company ownership

And now, Making Tax Digital (MTD) is adding another layer.

From 2026 onwards, landlords earning above the threshold will need to keep digital records and submit quarterly updates to HMRC instead of filing a single annual return.

For some landlords, this won’t be a major adjustment. For others - particularly those using spreadsheets or manual records - it could mean significant changes to how income and expenses are tracked. Ownership structure and tax reporting are now closely linked.

If you’re:

• Expanding your portfolio
• Considering incorporating
• Or holding multiple properties personally

You need to understand how MTD affects your reporting obligations.

What You Should Actually Do

• Speak to a tax adviser before incorporating
• Review how you currently record rental income and expenses
• Consider accounting software if you’re still using manual systems
• Factor compliance admin into your long-term strategy

Growth without structure can quickly become expensive.

The Bigger Picture: Professional Standards Without the Commission

Managing your own rental property doesn’t mean cutting corners.

In fact, self-managing landlords often operate with tighter margins and therefore need to be more organised.

The difference between a profitable portfolio and a stressful one usually comes down to:

• Clear documentation
• Realistic pricing
• Structured tenant checks
• Proactive maintenance
• Staying informed

Technology and fixed-fee platforms now make it entirely possible to maintain professional standards without paying ongoing management commission.

But the responsibility still sits with you.

Our Final Thoughts

The rental market in 2026 still offers strong yields and steady demand - but only for landlords who approach it strategically.

Avoiding these five mistakes won’t just protect your income. It will protect your time, your reputation, and your long-term investment value.

If you’re reviewing your portfolio this year - whether expanding, refinancing, or selling underperforming assets - now is the time to tighten up your processes.

Smart landlords don’t just react to change. They prepare for it.

Useful links

• Renters’ Rights Act - what landlords need to know
• Maximising rental income - strategies to minimise void periods
• A landlord’s guide to compliance - legal responsibilities without an agent
• Let your property with Emoov