Do I need planning permission to demolish and rebuild?
Sarah Duran
Published Mar 22, 2026
The demolition of buildings is considered to be development and planning permission is not required except the demolition of houses or flats, or buildings adjoining houses or flats. Planning permission will not be needed: where the demolition is on land which has been given planning permission for redevelopment.
Can I knock down house and rebuild?
When considering large-scale alterations to your home, demolishing to rebuild might not be your first consideration. However, it might make sense, both architecturally and financially, to knock down your old home and replace it with something new, designed to your specification.
What is a Section 80 demolition notice?
The Section 80 Demolition Notice is also known as the Notice of Intended Demolition and is featured in the 1984 Building Act. For those who have the intention to demolish a part or whole building, this notice must be completed by the person responsible.
Is demolition classed as development?
‘Development’ includes: building operations (eg structural alterations, construction, rebuilding, most demolition); material changes of use of land and buildings; engineering operations (eg groundworks);
How much is a knockdown rebuild?
Costs vary, but are generally about $10,000 to $15,000. HOW LONG DOES IT TAKE? The design’s size and complexity – as well as things like adverse weather, site issues and other challenges – will dictate the length of the project.
How much does it cost to gut and rebuild a house?
Gut Renovation Depending on the square footage, the average cost to gut and remodel a house can be anywhere between $100,000 – $200,000⁴. Gut renovation cost per square foot ranges between $60 – $150 and includes new plumbing, appliances, structural improvements, a new roof and an HVAC.
How long does a Section 80 last?
Building Act 1984, Section 80 is up to date with all changes known to be in force on or before 29 July 2021. There are changes that may be brought into force at a future date.
How long does a demolition notice last?
Final Demolition Notices will end any existing Right to Buy claims and enable us to refuse new applications. The notice will be valid for up to 24 months.
How much does it cost to tear down an old house?
Most home demolitions, regardless of the property size, start at $4,000 and go up from there based on the square footage — meaning a 1,200 square foot home could cost you $4,800-$18,000 to demolish and a 2,000 square foot home could cost you $8,000-$30,000.
What is the best way to demolish a house?
Tear the House Down Then, work your way down by knocking over each wall and caving in each floor. Reduce risk while demolishing the house by pushing against the structure so debris doesn’t fall toward you. Continue until every floor and wall is leveled.