Disrepair as a ground to challenge a rent increase: the evidence tenants need

A rent increase is meant to reflect what your property is worth on the open market today. If parts of your home aren't fit to live in, that market value isn't what the landlord's notice says — it's lower. Disrepair is one of the strongest evidential grounds tenants have to challenge a rent increase in England.

This guide sets out what legally counts as disrepair, how it weakens a market-rent argument, what evidence to gather before you write back, and how the "revenge notice" rule can invalidate a Section 13 increase outright.

Why disrepair matters for a rent increase

There are three separate legal mechanisms at play. Each one is useful; combined they are powerful.

• Market rent argument. The tribunal sets rent at the open market figure a reasonable new tenant would pay for the property in its current condition. If damp, heating failures or structural problems reduce habitability, the market rent is lower than the landlord claims.
• Rent abatement. Where disrepair has been ongoing, courts can order a retrospective reduction in the rent that was lawfully payable — effectively saying you've been paying too much. That strengthens any argument that a further increase is unreasonable.
• Revenge notice rule. If you've complained about disrepair and the landlord responds with a Section 13 notice rather than repairs, the notice can be treated as retaliatory. Under existing case law and strengthened protections from 1 May 2026, a retaliatory rent increase notice can be ruled invalid.

You don't need all three to succeed. Any one of them can reduce or invalidate a proposed increase.

What counts as disrepair

Not every annoyance is disrepair. The legal bar is whether the landlord has breached their statutory repairing obligations under Section 11 of the Landlord and Tenant Act 1985, or the Homes (Fitness for Human Habitation) Act 2018.

Section 11 makes the landlord responsible for:

• Structure and exterior. Walls, roof, windows, doors, gutters, external paintwork.
• Installations for gas, water, electricity and sanitation. Pipes, wiring, boilers, radiators, basins, baths, WCs.
• Installations for heating and hot water. Including the boiler, immersion heaters and heating controls.

Fitness for Human Habitation expands that with a wider standard — including damp, ventilation, water supply, freedom from serious hazards, and the HHSRS Category 1 list (damp, excess cold, falls, fire safety, etc.).

Issues that typically count as disrepair:

• Persistent damp or mould — especially if the cause is roof, wall, window or plumbing defects rather than tenant lifestyle alone.
• Boiler, heating or hot water failures that are not fixed within a reasonable time.
• Leaks from roof, plumbing, shower trays, or washing machine waste pipes.
• Broken or unsafe windows — sash cords, cracked glass, rotten frames.
• Electrical defects — failing sockets, exposed wiring, no EICR on request.
• Structural problems — subsidence, cracked external walls, unsafe staircases.
• Sanitation problems — WC leaks, blocked main drains, failing extractor fans in bathrooms without natural ventilation.
• Serious HHSRS hazards — e.g. lack of fire detection, unsafe gas appliances.

Issues that generally don't count on their own:

• Cosmetic wear (small chips in paint, slightly scuffed floors).
• Outdated but functional decor or fittings.
• Condensation from tenant behaviour alone where ventilation is adequate and there's no structural cause.
• Wear and tear from the tenant's use of the property.

Tenant responsibilities — be clear about the line

To make a disrepair argument land, you need to show you've acted like a reasonable tenant. That means:

• Reporting issues in writing promptly.
• Not causing or worsening the problem.
• Allowing reasonable access for inspection and repair.
• Ventilating, heating and maintaining the property in a reasonable way.

A file of emails showing you reported damp in December, chased in January, and reported again in March is the backbone of any disrepair argument. Verbal complaints don't leave the same evidential footprint.

The "revenge notice" rule

Under the Deregulation Act 2015 the principle was established that landlords cannot serve a valid eviction notice in retaliation for a tenant raising legitimate repair complaints. That logic has been applied by tribunals to rent increase notices too: if a tenant has complained, and the landlord's response is a rent increase rather than repair, the notice can be found invalid.

From 1 May 2026, the Renters' Rights Act 2025 strengthens retaliation protections across the rental system. Combined with the Act's abolition of Section 21 no-fault evictions, the balance tilts further toward tenants who raise disrepair complaints.

Practical implication: if you've been writing to the landlord about damp for six months and a Section 13 notice lands without repairs happening, that notice is vulnerable before you even argue market rent. Raise the disrepair timeline first.

Evidence to gather before you reply

Think of your evidence in four layers:

Layer 1 — The complaint timeline

A dated list of every time you raised the disrepair issue:

Date	Method	Issue	Landlord response
2025-12-14	Email	Damp behind bedroom wardrobe	"Will inspect"
2026-01-10	Email	No response to December report	"Scheduling contractor"
2026-02-02	Phone + email	Contractor didn't attend	"Rescheduling"
2026-03-18	Email	Damp now visible on ceiling	No reply

Pull these from your sent folder and tenant app histories. Build the table in a Word or Google Doc. Attach the email PDFs.

Layer 2 — Physical evidence

• Photos and video. Time-stamped, wide shots plus close-ups. Take new ones the week you receive the Section 13 notice — don't rely on anything older than three months.
• Moisture readings if you can borrow or buy a £15 damp meter. Note readings at multiple points on an affected wall.
• Copies of any contractor reports, even if they downplay the problem.
• EPC certificate from the landlord. Low EPC ratings (F/G) are a separate legal issue under MEES and provide independent evidence that the property is below standard.

Layer 3 — Expert evidence (optional but powerful)

• Environmental Health inspection. Local authorities run free or low-cost HHSRS inspections for tenants. A written hazard report from an EHO carries significant weight at tribunal.
• Independent damp survey. £150-£300 gets an RICS-accredited surveyor's report. Often over-priced for low-value claims but decisive when the disrepair is material.

Layer 4 — Market comparables

Even with strong disrepair evidence, you still need comparables to argue the reduced market rent. Pull three to six recent lets in your area for similar properties in better condition to show what the open market would pay.

A short narrative tying it together: "Properties in similar condition on [Road] have been let at £1,200 this month. My property, with ongoing damp in two rooms and a boiler replaced three times in six months, is not comparable to those and cannot reasonably be let at the proposed £1,400."

Building the letter

Disrepair evidence fits into a standard negotiation letter (see our negotiation guide) with one extra paragraph near the top:

I'd like to flag that the property has ongoing disrepair issues that affect its current market value. These include [damp in the bedroom, reported on X, Y, Z dates] and [the boiler, which has failed and been replaced twice since January]. A full timeline of reports and photographs is attached.

Until these issues are resolved, the market rent the property could command is below that of comparable properties in good repair. On that basis, the proposed increase to £[X] is not justified.

I would welcome a discussion on both the repair schedule and the proposed rent in parallel.

That phrasing accomplishes three things: it ties repairs to rent value, it signals you have a documented timeline, and it offers a constructive way forward. It also lays the ground for invalidating the notice as retaliatory if the landlord refuses both.

Two-track strategy at the tribunal

If negotiation fails and you go to the First-Tier Tribunal, bring disrepair evidence even though the tribunal's power is to set market rent rather than order repairs. The tribunal will adjust the market rent downward to reflect the property's condition.

Separately, you can pursue a disrepair claim in the County Court under the Housing Act 1988 and the Homes (Fitness for Human Habitation) Act 2018 for:

• An order compelling repairs.
• Compensation (rent abatement) for past periods of disrepair.
• Damages for any personal injury or health impact.

These two tracks complement each other. The tribunal sets the future rent; the County Court addresses past losses and enforces repairs. You don't have to choose.

What won't work

• Withholding rent. Never. Arrears hand the landlord an eviction route that no disrepair argument can undo.
• Unrecorded complaints. Verbal reports that don't leave a paper trail carry almost no evidential weight.
• Tenant-caused damage. If you created the problem — flooded the kitchen, damaged a radiator — that is not disrepair the landlord has to remedy.
• Old photos. Disrepair evidence should be current. Pull fresh photos in the week before you send the letter.
• Vague language. "The flat is falling apart" is not evidence. "Damp meter readings of 38% on the bedroom external wall, reported 14 Dec 2025, not remedied" is.

A decision tree

• Disrepair is documented and ongoing + you've complained in writing. Write back citing revenge-notice and market-rent grounds. Consider a parallel EHO inspection.
• Disrepair exists but is undocumented. Start the paper trail now — send a written report today — and use market comparables as the primary tribunal argument.
• Property is in good repair. Skip the disrepair angle; focus on procedural validity and comparable market rent.
• Unsure whether issues count as disrepair. Run the RentSOS check and request an EHO inspection. The check covers procedural validity in two minutes.

The bottom line

Disrepair is not a "last resort" argument. It's often the cleanest one. Properties with ongoing, documented defects cannot command the same market rent as equivalent properties in good repair, and the tribunal knows it. Combined with the revenge-notice rule, a well-evidenced disrepair timeline can undermine a Section 13 notice on two separate grounds at once.

Start the paper trail today. Run the free RentSOS check to confirm the notice is procedurally valid. Request an EHO inspection if the disrepair is serious. Then write back, clearly and calmly, with your evidence in hand.

Frequently asked questions

Can I stop paying rent because the property is in disrepair? No. Rent withholding is not a legal remedy in England — it creates arrears and gives the landlord an eviction route. Rent abatement is a court-awarded reduction, not something you decide alone.

What is a revenge notice? A notice served in retaliation for a tenant raising a legitimate complaint, typically about disrepair. Tribunals and courts can find such a notice invalid. Protections are strengthened from 1 May 2026 under the Renters' Rights Act 2025.

How much do I need to spend on evidence? You can build a strong case with free evidence: emails, photos, an EHO inspection (free or low-cost) and market comparables from Rightmove. A paid damp survey (£150-£300) only adds value when the disrepair is material.

Does an EPC rating matter? Yes — in two ways. A low EPC rating is direct evidence the property is inefficient, which affects market rent. Properties rated F or G cannot lawfully be let without an exemption under MEES.

What if the landlord offers to fix things in exchange for agreeing the rent increase? That's a negotiation option. Put any deal in writing, with specific works listed, dates for completion and consequences if the work slips. Don't agree to a rent increase in exchange for repairs the landlord owes you anyway.

Key takeaways

• Disrepair reduces the lawful market rent of a property — it is a proper ground to challenge a Section 13 increase, not a side issue.
• Your complaint timeline is the backbone of the case: keep every report in writing, dated and chased.
• Retaliatory ("revenge") notices can be ruled invalid. Protections against retaliation strengthen under the Renters' Rights Act 2025 from 1 May 2026.
• The First-Tier Tribunal sets rent; the County Court orders repairs and awards compensation. You can run both tracks in parallel.
• Never withhold rent. Pay the current rent on time throughout the dispute to keep every other lever intact.

Run the RentSOS check to confirm your Section 13 notice is valid before you build the disrepair case.