Substantial Extensions to a 4-Bed Property: Structural Engineer Calculations

Works: Our client was carrying out substantial extensions to their home, including demolition of a garage, removal of several internal walls and construction of double height and single story extensions.

Property: Four-bed 1970s detached property.

Instructed by: Homeowner.

Our Oxfordshire Structural Engineers provided structural calculations and drawings for all aspects of the planned extension, including:

  • Removal of the full length of the existing rear elevation at ground floor only.
  • Removal of the chimney to the rear elevation, full height of the building.
  • Single storey extension to the full width of the rear elevation.
Rear elevation before extension
Rear elevation before extension
Rear elevation after extension
  • Demolition of the single storey garage projection and porch to the front elevation.
  • Construction of new double height hallway with vaulted ceiling and curtain wall glazing.
  • New double height to front extension, with store at ground floor and extension to master bedroom at first floor.  Vaulted ceiling to bedroom with apex glazing to the front elevation.
  • Full height extension to the left hand gable, in the order of 2.5m wide.
  • Removal of the full length of the left hand gable wall at ground and first floors.
Front elevation before extension
Front elevation after extension
Front elevation after extension
  • Removal of internal wall between the living and dining room (assumed to be load bearing).
  • Removal of the internal wall at the front end of the kitchen.
  • New internal load bearing walls at ground floor between formal and informal living rooms.
Opened up kitchen and rear extension with new steelwork
Opened up kitchen with new steelwork
  • Conversion of the existing loft space to create a 5th bedroom, walk-in closet and bathroom.
Roof before extension
Roof space before extension
Roof space after extension
Roof space after extension

Find out more about our structural calculations.

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