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Basement Costs

There are many things that affect the cost of basements, these include:

  • How many light wells are required and how large do they need to be?
  • Is External access required?
  • What is the desired headroom? (This typically varies from 2.2m to 3.5m generally)
  • What internal lighting is required?
  • Is drainage needed for showers and/or toilet facilities?
  • Do you require underfloor heating?
  • What type of waterproofing system is required?
  • What level of access do we have to the basement for the removal of spoil and the
  • Storage of materials during the works?
  • What are the ground conditions like? Is the floor below the water table?

These are just a few of the factors to consider but some rough guideline costs are as follows and is obviously dependent on size, ground conditions, etc.

  • Reducing the floor level in a 2 room basement, underpinning the walls and fitting lightwells, approx £80,000 – £120,000
  • Excavating a retrofit basement or basement digout where no basement exists, underpinning the walls etc, for 2/3 rooms and a shower room from £100,000 – £150,000
  • Excavating and casting a basement on a new built property, from £150,000
  • Excavating and installing a basement swimming pool and gym from £400,000

Please contact us for further details as there are so many variables, and we will visit you and discuss all the options.

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