When you’ve outgrown your living space, one option is to move house yet when you weigh up the expense of upsizing, it’s anything but difficult to see why such a variety of mortgage holders choose to stay put and amplify their homes.

Utilising Rightmove’s Moving Cost Calculator, purchasing a normal estimated house in St Albans for £494,777 would cost £14,739 in stamp obligation, £2,474 in legitimate charges, and £2,474 in different expenses – an aggregate of £19,687.

However, in the event that you put a comparative total towards enhancing your present home, you would appreciate the additional advantage of your property expanding in size. Adding a single storey extension can ramp up the value of your house by 10% or more depending on the type of extension.

Planning Application

From £999*

  1. Draft designs until confirmation
  2. Full expert advice and support
  3. Includes providing options for the client and revising with them
  4. For applications in Conservation Areas a Design and Access Statement will be required, Extension Architecture can help provide this for an additional fee (price dependent on the scope and complexity)
  5. As your agent we will submit to the council

Building Regulation

From £900*

  1. Draft design until confirmation
  2. Full expert advice and support
  3. To make amendments to drawings where necessary
  4. Can advice for a Structural Engineer to obtain structural calculations (fees separate)
  5. Can guide client in submitting for building control (additional fees applicable where necessary)

Site Survey

From £250*


  1. Site survey by one of our team of experts
  2. Consultation of proposed plans
  3. Full site measurement survey
  4. Photographic survey

Submission Fees

Planning Application Fee to council (£172) not included
Permitted Development Fee to council (£86) not included
Our expert team will liaise with the council and handle the full submission process.