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Planning Permission and Building Works: What Sellers Need to Disclose

Resource Library — Planning & Alterations

Planning Permission and Building Works: What Sellers Need to Disclose

Extensions, conversions, and structural alterations are among the most common sources of solicitor enquiries. This category helps sellers understand what permissions are required, what to disclose, and what to do if something wasn't done correctly.

If you've carried out building works — an extension, a loft conversion, a garage conversion, or any structural alteration — buyers and their solicitors will want to see evidence that the work was carried out with the appropriate permissions and certificates. Missing planning permissions or building regulations certificates can delay or derail a sale. The resources in this category help sellers understand what's required, how to obtain retrospective certificates where possible, and how to handle situations where documentation is missing. Permitted development rights allow many common works to be carried out without formal planning permission — but the rules are specific, and what was permitted when the work was done may differ from current rules. Indemnity insurance is sometimes used to cover missing documentation, but it is not always available and does not resolve the underlying issue. Understanding your position before marketing begins gives you time to address gaps rather than discovering them mid-transaction.

Understanding when planning permission is required for building works
Knowing what building regulations certificates you should have
Understanding permitted development rights and their limits
Knowing what to do if you don't have the required permissions or certificates
Understanding how missing documentation affects your sale
Understanding when indemnity insurance can and cannot be used
Knowing how to search for planning permission records on the Planning Portal
Understanding what a local authority search will reveal about your property
Preparing for solicitor enquiries about extensions, conversions, or alterations

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More Resources Being Added

We're building out this category with practical guides, checklists, and tools. Register your interest to be notified when new resources are published.

Guide · Coming Soon

Conservatory Guide

A guide to conservatories for sellers — when planning permission and building regulations apply, what documentation buyers will ask for, and common issues.

Guide · Coming Soon

Garage Conversion Guide

A guide to garage conversions for sellers — planning permission requirements, building regulations, and what documentation buyers and their solicitors will need.

Guide · Coming Soon

Solar Panel Lease Guide

A guide to leased solar panels for sellers — what a solar panel lease means for your sale, how to disclose it, and how it affects mortgage availability.

Guide · Coming Soon

Green Energy Scheme Guide

A guide to green energy schemes for sellers — Feed-In Tariff, Smart Export Guarantee, and other schemes that may need to be transferred or disclosed on sale.

Guide · Coming Soon

EV Charger Guide

A guide to EV chargers for sellers — planning and building regulations requirements, what documentation buyers will ask for, and how to transfer any associated schemes.

Guide · Coming Soon

Heat Pump Guide

A guide to heat pumps for sellers — planning permission requirements, building regulations, MCS certificates, and what buyers will want to know.

Guide · Coming Soon

Smart Meter Guide

A guide to smart meters for sellers — what happens to your smart meter when you sell, how to notify your supplier, and what buyers need to know.

Guide · Coming Soon

Planning Portal Directory

A directory of planning portals for England and Wales — how to find planning permission records, search by address, and download decision notices.

Guide · Coming Soon

Local Authority Search Guide

A guide to local authority searches for sellers — what they cover, what they reveal, and how to prepare for the questions they may raise.

Guide · Coming Soon

Conservation Area Guide

A guide to selling a property in a conservation area — what restrictions apply, how they affect permitted development rights, and what buyers will want to know.

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