A house extension design can create an amazing transformative piece to a home’s interior and exterior, instilling a change in lifestyle that most modern families need for both life and work balance.
Whilst the book of regulations is thorough, not every kind of house extension requires planning permission. Depending on the property, preferences and personal taste, your dream home extension can be very achievable.
True Value and Benefit
By their nature, house extensions create fabulous usable space and extra versatility to the house layout. More often than not, this also increases your home value.
Home extensions provide an opportunity to have a unique, personalised space with an aesthetic and finish that showcases your individuality, making your home feel more in line with your way of living. Extensions play to both the strengths of the property and the human desires within, no matter if it is a conservatory with garden views to an open-plan entertainment space for socialising events.
Where Does Planning Permission Come Into Play
There are many instances when planning permission is required for an extension to your property, no matter the size.
Buildings such as flats or maisonettes fall outside of permitted development rights, meaning that planning permission becomes a necessity for any form of extension. Houses that are built on conservation areas or designated land may also require planning permissions when it comes to side or rear extension work. Permitted development rights do not apply to certain specific extensions.
Planning permission is required for balconies or raised platforms, verandas, chimneys, flues or vent pipes and any proposed extension that goes taller than the existing house. It also would apply to proposed extensions where materials used do not match the existing house (excluding a conservatory).
Extension Rules and Limitations
Permitted development rules and allowances do vary depending on the type of property it is required for. For single-storeys, extensions on detached houses may only cover half the area of land surrounding the house, including outbuildings such as a shed or garden cottage.
Rear extensions to single-storeys may not go further than 4 metres from the existing house or not exceed 4 metres in height. Side extensions are not to front onto any road and may only extend to a maximum of three metres of the original house layout.
For multi-storey extensions, the rules tend to be more stringent, not permitted to be taller than the existing height of the house, with the pitch of the roof matching that of the existing roof. Multi-storey rear extensions cannot exceed further than three metres from the house and at least seven metres from the rear property line.
As you can see, there are variations in the outlines of planning permission for different properties – which is why it is best to consult with a local architectural design company.
Contact the team at Cheadle Architects today for house extension design and architectural services Manchester.

