What Happens If You Sell a Leasehold Property With Unapproved Alterations?

Most UK long leases contain alteration covenants requiring the leaseholder to obtain written consent from the freeholder before carrying out works, typically through a formal Licence to Alter. Where works were carried out without this consent, the property remains in breach of the lease even after sale, and the breach transfers to the new owner. The incoming leaseholder inherits any enforcement risk, any insurance implications, and any ongoing compliance obligations arising from the works.

This article covers the specific consequences of selling a leasehold property with unapproved alterations, how buyers’ solicitors handle the issue, and what the realistic options look like for leaseholders in this position.

What the Buyer’s Solicitor Actually Does

Standard leasehold conveyancing involves detailed enquiries about alterations through the LPE1 form (sent to the management company) and the TA7 form (completed by the seller). The LPE1 asks specifically whether the management company has given consent for any works, and the response is cross-referenced with what’s physically visible in the flat during the buyer’s inspection.

Where discrepancies emerge (visible alterations without corresponding consent records), the buyer’s solicitor raises specific enquiries. The seller is expected to explain the position honestly, provide any supporting documentation, and indicate whether retrospective consent is being sought or indemnity insurance is in place.

The specific concern is whether the buyer will inherit enforcement risk. Freeholders can pursue leaseholders for breach of alteration covenants through court action, with remedies ranging from damages to specific performance (requiring reinstatement) to lease forfeiture in extreme cases. The 10-year immunity rule that applies to building regulations doesn’t apply to lease breaches, so very old alterations can still theoretically attract enforcement.

The Transfer of Liability at Completion

Lease breaches don’t require explicit transfer; they attach to the property through the lease itself. When ownership transfers, the new leaseholder inherits the full set of lease obligations including compliance with alteration covenants.

This means the incoming leaseholder could face freeholder enforcement action for alterations they didn’t make, which is why buyers’ solicitors scrutinise the position carefully. The outgoing seller doesn’t retain liability unless the sale contract specifically provides for it.

Practical arrangements vary. Some sales include specific seller indemnities for pre-sale breaches. Others include a seller contribution to indemnity insurance covering the specific alteration risks. Others simply pass the risk to the buyer with the price adjusted accordingly.

The Freeholder’s Position Matters

The specific freeholder’s attitude affects the practical significance of unapproved alterations. Some freeholders enforce alteration covenants actively, pursuing leaseholders for breach and requiring regularisation or reversal. Others take a lighter approach, intervening only where the alterations cause practical problems.

Buyers’ solicitors typically contact the freeholder or management company directly during conveyancing to understand their position on the specific alterations. A freeholder who confirms no intention to enforce reduces the practical risk substantially, though it doesn’t formally cure the breach.

Freeholder communication tends to go faster through a buyer who focuses on leasehold property sales, since the buyer’s team usually handles the licence-to-alter correspondence directly, which cuts out the slower back-and-forth with the seller’s solicitor at each stage.

The Three Resolution Routes Before Sale

Retrospective Consent

Freeholders can grant retrospective Licence to Alter covering the specific unauthorised works. The process typically takes six to twelve weeks and costs £500 to £3,000 depending on the freeholder’s requirements and the complexity of the alterations. Some freeholders require structural engineer reports, surveyor assessments, or compliance certificates before granting consent.

Where retrospective consent is granted, the breach is formally cured and the property can be sold on the same terms as any compliant leasehold. This is the cleanest resolution where it’s available.

Indemnity Insurance

Where retrospective consent isn’t available or isn’t practical in the timeframe, indemnity insurance can cover the enforcement risk. Premiums typically run £300 to £2,000 depending on the alteration and the perceived risk.

Insurance covers the risk of freeholder enforcement action against the current or future leaseholder but doesn’t cure the underlying breach. The policy terms need careful review, particularly around aggregate limits, exclusions, and transferability.

Price Adjustment and Buyer Acceptance

Where the alterations are modest and the freeholder has indicated no intention to enforce, some buyers accept the position with the price adjusted downwards. This works for straightforward situations but becomes difficult where the alterations are substantial or the freeholder is actively concerning.

What Happens if Problems Emerge After Completion

If the freeholder pursues enforcement after the sale completes, the new leaseholder (not the outgoing seller) bears the primary responsibility unless specific contractual arrangements say otherwise. The new owner faces the choice of regularising the works, defending the enforcement action, or taking the physical reinstatement route the freeholder requires.

Legal recourse against the seller depends on what was disclosed, what the sale contract said, and whether the seller gave specific warranties about compliance. Where the seller disclosed the position honestly and the buyer proceeded with knowledge, legal action against the seller is usually difficult. Where the seller misrepresented or hid the position, buyers have remedies under the Consumer Protection from Unfair Trading Regulations 2008 and misrepresentation law.

Pricing Impact Across Different Scenarios

Minor cosmetic alterations where retrospective consent is clearly available typically have minimal price impact. More significant alterations requiring surveyor assessment or structural analysis for consent typically reduce prices by 5% to 10% below equivalent compliant properties.

Serious structural alterations without consent, particularly where the freeholder has refused or is likely to refuse retrospective consent, can reduce prices by 15% to 30%. Properties where the alterations are visibly substandard or where the freeholder is actively pursuing enforcement sit at the lower end of this range.

Cash buyer offers reflect the specific situation and typically fall at 70% to 85% of the alterations-adjusted market value. For sellers facing difficult freeholder relationships or complex alteration histories, cash sale often produces faster resolution than conventional routes.

FAQs

Can a freeholder force the removal of unauthorised alterations after a sale?

Yes. The lease breach attaches to the property through the lease itself, and the new leaseholder inherits the full set of obligations. Freeholders can pursue enforcement action against the new leaseholder for alterations made by the previous owner.

Does the seller remain liable for unauthorised alterations after completion?

Only if the sale contract specifically provides for continuing seller liability. In most sales, the leasehold obligations transfer entirely to the new owner at completion, with the seller’s liability ending at that point.

How quickly can retrospective Licence to Alter be obtained?

Typically six to twelve weeks when the freeholder is cooperative. Timelines extend substantially where structural engineer reports or detailed surveys are required, or where the freeholder is slow to respond.

Can indemnity insurance for unapproved alterations be arranged quickly?

Yes, often within a week to ten days for straightforward situations. The policy covers the specific risk of freeholder enforcement against the enforcement, with premiums typically running £300 to £2,000.

Will a mortgage lender accept a flat with unapproved alterations?

Positions vary. Many mainstream lenders accept properties with modest alterations where retrospective consent is in progress or indemnity insurance is in place. Serious structural alterations without resolution typically narrow the lender pool substantially.