Feedback
Back arrow, pointing left

What do I need to know about new foundations for an extension?

Foundations are required to carry and distribute the load of the building safely. Therefore, all buildings should have adequate foundations. The factors that need to be considered when designing a foundation are:

  • Type of soil
  • Adjacent structures
  • Trees
  • Drains and sewers
  • Size and construction of the new building
  • Ground condition
  • Landfill sites

It is advisable to contact a structural engineer or speak to a building control body about plans for new foundations. 

Read more about foundations for extensions.

Common Questions

Can I keep a static caravan on my property?

Whether or not a static caravan can be kept on your property depends on how long it will be kept there for and what it’ll be used for. If the caravan becomes a new home on the property, will be rented out, or will stay in place for more than 28 days then permission if often needed.

If no material change of use occurs, and the caravan is only used for a purpose incidental to the enjoyment of the house then often no application for planning permission will be required. In this instance it may be classed as permitted development, as such it would have to adhere to limits and conditions set out for outbuildings.

If the property is in the curtilage of a listed building or in a conservation area you should contact your local planning authority.

What do I need to know if I want to add an internal wall to make another room in my house?

Adding an internal wall will not require planning permission or building control approval in most cases. If the building is listed, then you may require listed building consent to make a major alteration to the house.

Any work completed should adhere to building regulations, ensuring fire routes, electrics and ventilation are considered.

Is building regulations approval needed for a garage conversion?

The conversion of a garage, or part of a garage, into habitable space, will normally require approval under the building regulations.

As part of the garage conversion, it is likely that the original garage door will be in-filled with a new wall and possibly a window or door, and a new foundation may be needed for the new wall. 

As well as the foundation, you also need to consider:

  • Floor
  • Walls  
  • Ventilation

Read more about the building regulations for garage conversions.

I want to build my own house, what do I need to know?

Research indicates that more than half of the population would like to build their own home at some point in their lives. While it is a significant commitment that demands time and dedication, the reward is a home designed specifically to suit your needs and lifestyle.

As part of the self-build journey you will have to consider many factors including:

  • Finance
  • Location and acquiring land
  • Modular homes
  • Planning permission.

Read detailed guidance about self-build homes on Planning Portal

What size porch can I build without needing building regulations approval?

Building a porch at ground level and under 30 square metres in floor area is normally exempt from the need for building regulations approval.

This is provided that glazing and any fixed electrical installations comply with the appropriate sections of building regulations.

To find out more about the building regulations for porches, visit Planning Portal.

Find out more about glazing and electrical installations

Ask another question

Can’t find what you’re looking for?

Propose a question to help us make Smart Search even smarter
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.