Planning Permission Guide
Do you need planning permission for your home improvement project? Browse 58 common projects to find out what the rules are, whether you can build under permitted development, and how to apply if you need to.
This guide covers England only. Planning rules differ in Scotland, Wales, and Northern Ireland. Always confirm with your local planning authority before starting work.
Extensions and Conversions
Single-Storey Rear Extension
A single-storey extension built to the rear of your home, typically used to enlarge a kitchen, dining room, or living space. One of the most common home improvement projects in the UK.
Two-Storey Rear Extension
A two-storey extension to the rear of your property, adding significant living space on both the ground and first floor. Subject to stricter conditions than single-storey extensions.
Single-Storey Side Extension
A single-storey extension built to the side of your property, often used to add a utility room, downstairs WC, or to widen a kitchen.
Two-Storey Side Extension
A two-storey extension to the side of your home, significantly increasing floor space on both levels. Subject to strict PD conditions to prevent a 'terracing' effect in residential streets.
Wrap-Around Extension
A wrap-around extension combines a side and rear extension into one L-shaped structure. This creates a large open-plan space but must comply with the PD rules for both side and rear extensions simultaneously.
Loft Conversion with Dormer
A loft conversion that includes a dormer window to create additional headroom and usable floor space. One of the most popular ways to add a bedroom or home office without extending the building's footprint.
Loft Conversion with Roof Lights Only
A loft conversion that uses roof lights (such as Velux windows) rather than dormers. Because no additional roof volume is added, this type is subject to fewer planning restrictions, though Building Regulations still apply.
Garage Conversion
Converting an existing attached or integral garage into habitable living space. Because the building's footprint does not change, this is usually considered an internal alteration and does not need planning permission.
Basement Conversion
Converting an existing cellar or basement into habitable space, or excavating to create a new basement. Internal conversion work usually does not require planning permission, but excavation and external changes such as lightwells may need it.
Conservatory
A glazed extension, typically to the rear of the property, used as a living or dining space. Conservatories follow the same permitted development rules as single-storey extensions but may be exempt from Building Regulations if they meet certain conditions.
Orangery
An orangery is similar to a conservatory but features more solid walls with a glazed lantern roof. For planning purposes, an orangery is treated as a single-storey extension and follows the same permitted development rules.
Porch
A covered entrance structure at the front of your property. Porches benefit from specific permitted development rights that are more generous than those for general extensions, provided they stay within strict size limits.
Annexe or Granny Flat
A self-contained living space for a family member, either as an extension to the main house or as a separate building in the garden. The key planning issue is whether the annexe is ancillary to the main dwelling or constitutes a separate dwelling.
Outbuildings and Garden Structures
Garden Shed
A garden shed for storage, hobbies, or as a workshop. Garden sheds are one of the most straightforward projects under permitted development, provided they stay within the size and height limits.
Summer House
A garden building used for relaxation, entertaining, or as a hobby space. Summer houses follow the same permitted development rules as other outbuildings.
Garden Office
A dedicated workspace in your garden, increasingly popular since the shift to home working. Garden offices follow outbuilding PD rules but the use must remain incidental to the main dwelling.
General Outbuilding
Any detached building within the grounds of your home used for purposes incidental to the dwelling, such as storage, a workshop, a gym, or a games room. This covers the general outbuilding rules under the GPDO.
Carport
A covered structure for parking vehicles, open on at least two sides. Carports follow the same PD rules as outbuildings, with the additional requirement that they must remain open-sided.
Swimming Pool
An outdoor or indoor swimming pool within the grounds of your home. Outdoor pools are generally treated as engineering operations and follow outbuilding area limits. Indoor pools within a new building follow outbuilding rules.
Hot Tub
An outdoor hot tub or spa installed in your garden. Hot tubs are generally treated as movable items and do not normally need planning permission. If housed within a permanent structure, outbuilding rules apply.
Greenhouse
A glazed garden structure for growing plants. Greenhouses follow the same permitted development rules as other garden outbuildings.
Gazebo or Pergola
An open or semi-open garden structure for shade and outdoor enjoyment. Permanent gazebos and pergolas follow outbuilding PD rules; temporary or movable structures generally do not need planning permission.
Garden Room
A fully insulated, habitable garden building used as a living room, hobby space, or entertainment area. Garden rooms are treated as outbuildings for PD purposes but must be used for purposes incidental to the main dwelling.
Roofing and External Changes
Dormer Window
A structural window that projects vertically from a sloping roof, creating additional headroom and usable space in a loft. Dormers follow the same PD rules as loft conversions under Part 1, Class B.
Roof Replacement (Like for Like)
Replacing an existing roof covering with the same or similar materials. Like-for-like roof replacement is considered maintenance and repair, which does not require planning permission.
Changing Roof Materials
Changing the roof covering to a different material, colour, or style (for example, replacing concrete tiles with natural slate). This may or may not require planning permission depending on the visual impact and location.
Chimney Removal
Removing a chimney breast internally, reducing the chimney stack externally, or removing the chimney entirely. Internal removal is generally PD, but external changes to the roofline may need planning permission.
Roof Windows (Velux)
Installing roof windows (also known as Velux windows or skylights) into an existing roof slope. Roof windows are a popular way to bring light into loft spaces without the cost of a full dormer.
External Cladding or Rendering
Adding, replacing, or changing external cladding or rendering on your property. This can include timber cladding, composite panels, render systems, or stone facing. Whether planning permission is needed depends on the visual impact.
External Wall Insulation
Adding insulation to the outside of your property's walls, typically finished with render or cladding. EWI changes the external appearance and thickness of the walls, which may require planning permission.
New Chimney or Flue
Installing a new chimney or flue on your property, typically for a wood-burning stove, open fire, or biomass boiler. Permitted development allows one flue per property under specific conditions.
Windows and Doors
Replacing Windows (Like for Like)
Replacing existing windows with new units of the same or similar style. Window replacement is generally considered repair and maintenance but must comply with Building Regulations for energy efficiency.
New Window Openings
Creating new window openings in existing walls where none previously existed. This is generally permitted but side-facing windows at upper-floor level have specific restrictions to protect neighbours' privacy.
Bi-Fold or Sliding Doors
Installing bi-fold, sliding, or French doors, typically to open up a living space onto a garden or patio. Replacing an existing window or door opening with bi-folds is usually PD; creating a new large opening in the wall has additional considerations.
Front Door Replacement
Replacing your front door with a new door, whether the same or a different style. Front door replacement is generally considered maintenance and repair, though Building Regulations apply for energy efficiency and security.
Gardens and Boundaries
Fencing (Under 2 Metres)
Installing, replacing, or maintaining a fence up to 2 metres in height. Fencing under 2m is one of the most straightforward permitted development rights, with few restrictions.
Fencing (Over 2 Metres or Adjacent to Highway)
Fencing that exceeds 2 metres in height, or fencing over 1 metre adjacent to a highway used by vehicular traffic. Both scenarios require planning permission as they fall outside permitted development rights.
Garden Walls
Building a new garden wall or boundary wall. Garden walls follow the same height limits as fencing under permitted development: 2m generally, or 1m if adjacent to a highway.
Decking
Installing timber or composite decking in your garden. Decking is generally permitted but must not be raised more than 300mm above ground level, as higher decking is treated as a raised platform with stricter rules.
Patio or Paved Area
Laying a patio, paved area, or hard surface in your rear garden. Patios are generally permitted as garden improvements with no planning requirements, though front garden paving has specific drainage rules.
Driveway Paving
Paving or resurfacing a front driveway. Since 2008, non-permeable driveway surfaces over 5 square metres require planning permission unless they drain to a permeable area within the curtilage.
Dropped Kerb
Lowering the kerb at the edge of the road to allow vehicles to cross the pavement onto a driveway. This requires permission from the highway authority (usually the local council), which is separate from planning permission.
Tree Removal
Removing a tree from your property. Whether you need permission depends on whether the tree has a Tree Preservation Order (TPO) or is in a conservation area. Unprotected trees on your own land can generally be removed without permission.
Retaining Wall
A wall built to hold back earth and manage changes in ground level. Small retaining walls may be permitted development, but larger walls that significantly alter ground levels are likely to need planning permission.
Energy and Services
Solar Panels
Installing solar photovoltaic (PV) panels or solar thermal panels on your roof or within your property's grounds. Solar panels have specific permitted development rights under Part 14 of the GPDO.
Air Source Heat Pump
Installing an air source heat pump (ASHP) to heat your home. ASHPs have specific permitted development rights under Part 14 of the GPDO, subject to noise and size conditions.
Ground Source Heat Pump
Installing a ground source heat pump (GSHP) that extracts heat from the ground via buried pipes (horizontal trenches or vertical boreholes). GSHPs have specific permitted development rights under Part 14.
EV Charging Point
Installing an electric vehicle charging point on your property. Wall-mounted and post-mounted chargers have specific permitted development rights under Part 2 of the GPDO.
Satellite Dish
Installing a satellite dish or antenna on your property. Satellite dishes have specific permitted development rights under Part 25 (formerly Part 1, Class H) of the GPDO.
Biomass Boiler
Installing a biomass boiler that burns wood pellets, chips, or logs to provide heating and hot water. The boiler itself is an internal installation, but the flue has specific PD conditions.
Battery Storage System
Installing a home battery storage system (such as Tesla Powerwall) to store electricity from solar panels or the grid. Internal installations are straightforward; external units follow outbuilding rules.
Oil Tank Installation
Installing a domestic oil storage tank for heating oil. Oil tanks are treated as outbuildings under permitted development and have specific conditions regarding capacity and position.
Other Projects
Change of Use
Changing how a building or land is used (for example, from residential to commercial, or from a dwelling to a house in multiple occupation). Most changes of use require planning permission, though some are permitted under the Use Classes Order.
Demolition
Demolishing a building or structure. The rules vary significantly depending on what is being demolished: a dwelling, an outbuilding, a wall, or part of a larger building.
CCTV Cameras
Installing domestic CCTV cameras on your property. CCTV installation is generally permitted development and does not require planning permission. However, data protection rules apply to the areas the cameras capture.
Flue or Extraction System
Installing a flue, chimney, or extraction system on your property (for example, for a kitchen extractor, boiler, or stove). The permitted development rules are the same as for new chimney/flue installation.
Hard Standing
Creating a hard surface area on your property for parking, storage, or general use. The rules are the same as for driveway paving: permeable surfaces are PD, while non-permeable surfaces over 5 square metres need careful consideration.
Loft Insulation
Adding or upgrading insulation in your loft space. Loft insulation is an internal alteration and does not require planning permission. It is one of the simplest and most cost-effective energy efficiency improvements.
Disclaimer: This is general guidance based on standard permitted development rights in England. Rules differ for listed buildings, conservation areas, and properties with Article 4 directions. Always confirm with your local planning authority before starting work. Tradesfolk provides this information for guidance only and accepts no liability for decisions made based on this content.
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