Do I Need Planning Permission for a House Extension?
A practical England guide to planning permission, permitted development and householder applications for rear and side extensions.
Read guide →Technical Advice · England
Planning & Building Regulations guides for homeowners.
Clear, source-linked explanations for the questions people ask before starting an extension, loft conversion or technical design package.
Reviewed 2 October 2026
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Each guide answers one specific search question and links back to the official national guidance used. Local planning policy and property-specific restrictions can change the answer, so use the guides as a starting point rather than a substitute for checking the actual site.
Do I Need Building Regulations Approval for a House Extension?
England guide to Building Regulations approval for house extensions, including structure, energy, fire, ventilation, drainage and electrical safety.
Read guide →Do I Need Planning Permission for a Loft Conversion or Dormer?
England guide to loft-conversion planning permission, dormers, permitted development rights and when a householder application may be required.
Read guide →Building Regulations for a Loft Conversion: What Needs to Be Considered?
A homeowner guide to Building Regulations for loft conversions in England, including structure, stairs, fire safety, insulation and ventilation.
Read guide →Large Glazing in an Extension: What Does Part L Mean?
Guide to large glazed extensions, rooflights and wide sliding doors under Part L in England, including the 25% opening-area approach and alternative calculations.
Read guide →Do I Need Structural Calculations for Bifold Doors or a Large Opening?
Guide to structural calculations for large openings, bifold doors, sliding doors and removed loadbearing walls in home extensions.
Read guide →Planning Drawings vs Building Regulations Drawings: What Is the Difference?
Understand the difference between planning drawings and Building Regulations drawings for a house extension or loft conversion in England.
Read guide →Party Wall Act for Extensions and Loft Conversions: When Should I Check?
General guide to the Party Wall etc. Act 1996 for extensions, loft conversions, beams in party walls and excavation near neighbouring buildings.
Read guide →Electrical Design and Part P for a Home Extension
Homeowner guide to electrical safety and Part P for residential extensions in England, including design coordination and notification considerations.
Read guide →Permitted Development vs Planning Permission: What Is the Difference?
A simple England guide to permitted development rights, planning applications, lawful development certificates and local restrictions.
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