Extensions
Extension Approvals in Harrow
The following extension approvals records have been published by London Borough of Harrow for properties in Harrow. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
8 records
Recent extensions approvals
The following records have been published by London Borough of Harrow for properties in Harrow.
Single-storey rear extension approved in Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Construction of a single-storey rear extension with 3m projection, parapet wall, and two rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Single-storey rear extension approved in Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Construction of a single-storey rear extension with 3m projection, parapet wall, and two rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Wraparound extension approved in Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Construction of a single-storey rear extension with 5m projection, parapet wall, and two rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Two-storey side extension approved near Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Proposed single-storey rear extension with bi-fold doors, internal layout alterations, and associated landscaping
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Two-storey side extension approved near Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Proposed single-storey rear extension with bi-fold doors, internal layout alterations, and associated landscaping
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Single-storey rear extension with rooflights approved in Hatch End
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Proposed single-storey rear extension with bi-fold doors, internal layout alterations, and associated landscaping
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Wraparound extension approved in Hatch End, Harrow
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Construction of a single-storey rear extension with 5m projection, parapet wall, and two rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Single-storey rear extension with rooflights approved in Hatch End
ApprovedSite context
Residential property in Hatch End, Harrow
Proposal
Proposed single-storey rear extension with bi-fold doors, internal layout alterations, and associated landscaping
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Example drawings
Drawing examples — extensions in Harrow
Anonymised plan sheets illustrating the type of drawings Crown Architecture prepares for extensions projects in Harrow. Always check the public register for exact approved drawings.
Official guidance
Extensions — official planning guidance
Learn more about extensions requirements from the Planning Portal and London Borough of Harrow.
FAQ
Extensions in Harrow — common questions
What extension approvals have recently been approved in Harrow?
This page shows recent extension approvals published by London Borough of Harrow. Each record includes the application reference, decision date, proposal summary, and planning considerations.
Can I replicate an approved extension approval in Harrow?
Previous approvals show what the council has found acceptable, but every application is assessed individually. Crown Architecture can review your property and advise whether a similar approach would work for your specific situation.
How long does it take to get extension approval approval in Harrow?
Most householder applications are determined within 8 weeks. Prior approval applications have a 42-day determination period. Lawful development certificate applications are typically determined within 8 weeks. More complex applications may take longer.
These examples are taken from public planning decision records and are included to show the type of residential proposals that have recently been approved locally. They are not guarantees. Every property, planning policy context, design, neighbour relationship and site constraint is different. Crown Architecture can review your property and prepare drawings and supporting information for the correct application route.
Last updated: 22 June 2026. Based on public planning register decisions published by London Borough of Harrow.
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