As an established North London building contractors we have many years’ experience in building home extensions as well as liaising with architects and structural engineers and keeping to designs exactly.
One of the key factors to consider is choosing what type of extension to go for, whether you want an extension that would be described as “permitted development” or one that would require planning permission from the Council. You can find out more at planning portal. Acquiring planning permission may take a few months, it will incur additional application costs.
With “permitted development” house extension plans are supplied to the Council and within a few days, once they are approved, you can start the building works.