The four-year rule meant an unauthorised building, such as a conservatory, became immune from planning enforcement after four years. In England this is now 10 years for work substantially completed on or after 25 April 2024. Older work still follows the four-year limit, so the date of completion decides.
How does the rule work?
The clock starts when the building is substantially complete. If the council takes no enforcement action within the time limit, the building is generally immune, and a certificate of lawful development can confirm this in writing.
Does it apply to every conservatory?
No. A conservatory that meets permitted development limits needs no planning permission, so the rule only matters when it breached those limits. The 10-year change applies to England only, so Wales and Scotland should be checked separately.
Does it cover Building Regulations?
No. Building Regulations enforcement follows separate rules, so a conservatory can be immune from planning action and still lack required approval. Solicitors usually ask for both when a property is sold.
Phoenix Windows makes its PVCu frames in-house in Nuneaton and backs installations with an insurance-backed 10-year guarantee. See our conservatories for more detail.
Thinking about a conservatory or roof? We build and refurbish across Nuneaton, Bedworth, Hinckley, Tamworth and Rugby, and every installation comes with an insurance-backed 10-year guarantee. Call 02476 350 330, or request a quote.