The danger of NOT increasing rents

16 Sep 2026

As a landlord, it’s completely natural to want to keep good tenants happy. If a tenant pays on time, looks after the property, and rarely complains, the instinctive reaction is often: “Why rock the boat? I’ll just leave the rent as it is this year.”

While keeping the rent frozen feels like the safe, low-friction option, long-term freeze strategies often backfire. Choosing not to implement small, regular annual rent reviews introduces hidden financial, legal, and exit-strategy risks that can jeopardise your overall investment.

1. Selling a property with below market rents

One of the most damaging consequences of freezing rent becomes painfully obvious when you decide to sell the property. Whether you are liquidating an asset for retirement or rebalancing your portfolio, sitting on below-market rent directly harms your exit value:

  • Lower Selling Price to Investors: Property investors calculate purchase prices based on gross and net yield. If your property brings in £1,000 per month when market value is £1,300, an investor will price their offer based on the actual £1,000 return—wiping tens of thousands of pounds off your asking price.
  • Shrinking Your Buyer Pool: Selling a tenanted property below market rate essentially limits your market strictly to cash buyers or institutional investors who may demand a heavy discount to absorb the yield shortfall.

2. Creating future rent shock

When rent is left untouched for three, four, or five years, it drifts significantly below true market value.

When rising overheads eventually force a correction, you are left with a difficult choice:

  • Take a permanent, compounding loss on your yield, or
  • Propose a massive, sudden jump in rent (e.g., £150+ per month).

Large spikes trigger severe "rent shock" for tenants, often leading to sudden move-outs, unnecessary friction, or affordability disputes. In contrast, modest annual adjustments are far easier for tenants to budget for and accept.

3. Inflation eats your income

Even when general inflation stabilises, operational property expenses rarely go backward. Without regular rent adjustments, your net yield shrinks every single year:

  • Maintenance & Trade Costs: Plumbers, electricians, materials, and safety contractors increase their rates annually.
  • Compliance & Insurance: Building insurance premiums, mandatory safety certificates (Gas Safe, EICR), and service charges continually trend upward.
  • Taxation Constraints: With reduced tax relief on mortgage interest (Section 24), maintaining your net margin requires proactive financial management.

If your rental income remains static while operational costs rise, your profit margin erodes quietly in the background.

4. You struggle to 'catch up'

Under UK tenancy regulations (governed by the Renters’ Rights Act framework), how landlords handle rent reviews is strictly controlled:

Landlords can only increase rent once every 12 months using standard statutory with a minimum of two months' advance notice. If you skip three years of reviews, you cannot "double up" to catch up.

If rent drops significantly below market rate and you try to implement a substantial hike, tenants can refer the notice to the First-tier Tribunal. The tribunal assesses open-market value and cannot set a rent higher than the figure you proposed, and the new rent only takes effect after determination, without backdating.

5. Property maintenance suffers

A healthy rental property requires routine maintenance and long-term capital improvement, whether that’s replacing an aging boiler, upgrading energy efficiency standards (EPC compliance), or refitting a bathroom.

When a property’s rental yield is suppressed, the budget available for ongoing upkeep shrinks. Over time, this leads to deferred maintenance, lower property asset values, and reduced appeal to quality tenants.

How does Ultralets handle your annual reviews?

A rent review doesn’t mean pushing for the absolute maximum price the market will bear.

Our goal during your annual rent review is to strike a balanced middle ground.

When looking at each property, we;

  1. We evaluate actual comparable lettings in your immediate local area.
  2. We aim for fair, incremental adjustments that maintain a great relationship with your tenants while protecting your asset's value.
  3. We manage all statutory notices and legal timeframes correctly so your portfolio remains compliant and optimised for any future sale.

Got a question on your recent rent reviews or want to discuss the current market? Contact our Client Manager, Jake on 01482 562 562 or jake.astill@ultralets.co.uk

Posted By

Jake Astill


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