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Selling

Selling A Home That Was Extended Without Approval

Work carried out without the required consents becomes the seller's problem at the point of sale, and the remedies are regularisation, indemnity or a reduced price.

A close-up of hands shaking over a signed property agreement, symbolizing a successful real estate deal.
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Unapproved building work is common and often invisible. It becomes material when a buyer's conveyancer asks for paperwork that does not exist.

Two different consents, two different problems

Most systems separate permission to build something from approval that it was built correctly. Work can satisfy one and not the other.

A missing planning consent concerns whether the structure should exist. A missing completion or building control record concerns whether it was constructed to the required standard.

The distinction matters because the remedies differ, and because a buyer's lender may be more concerned with one than the other. Both regimes are jurisdiction-specific and change.

Why it surfaces during the sale

Sellers complete questionnaires about alterations, and conveyancers cross-check answers against title documents, search results and the surveyor's description of the property.

A conservatory, a loft room, a garage conversion or removed internal walls all prompt a request for the relevant certificates.

Work carried out by a previous owner is still the current seller's difficulty, because they are the party who must answer the enquiry and provide what they have.

The three routes forward

Regularisation means applying retrospectively for the missing consent, which may require opening up work for inspection and can result in the authority requiring changes.

Indemnity insurance covers the financial consequences of enforcement action rather than fixing the underlying issue, and it is usually unavailable once the authority has been contacted.

The third route is disclosure and a price adjustment, where the buyer accepts the position knowingly and prices the uncertainty into their offer.

Enforcement risk changes with time

Many jurisdictions limit how long an authority has to act against unauthorised work, after which enforcement becomes difficult or impossible.

Those periods, the events that restart them and the exceptions, particularly for listed or protected buildings, differ substantially between systems and are revised.

Because the specifics govern the outcome, this is a question for a local conveyancer rather than one to settle from general principles or from what a neighbour was told.

Preparing rather than reacting

Sellers who establish the position before marketing choose their route calmly. Those who discover it mid-transaction negotiate under time pressure with a buyer who now doubts everything else.

Ordering the option chosen also matters: contacting the authority forecloses the insurance route, so the sequence should be decided before anyone makes an enquiry.

Where work was done properly but the paperwork was lost, records held by the authority or the original contractor sometimes resolve the question at no cost.

Questions readers ask

Can two agents charge me for the same buyer?

It happens where a post-termination introduction clause applies. Get a written list of introduced buyers from the outgoing agent before instructing anyone else.

Does relisting reset how long a property has been for sale?

Partially and temporarily. New photographs and a new listing help, but the history is often still traceable, and buyers who saw it before still remember it.

Sellingsellingagentscontractsstalled sale
Sinead Culhane
Rental writer, The Property Decision

Sinead writes about tenancies and deposits from both the tenant and the landlord side.

Also by Sinead Culhane