James Lockyer Associates Ltd
Oakland Mews, Liskeard
CornwallPL14 3UX
01579 344771
Finished project
The Finished Building
Bridges and Walkways
Completed project
During construction
Underpinning reinforcement
Reinforcement for new patio
Completed Project
View from the new balcony
Completed works
Completed project
Completed project

Small Sinkhole


Pensilva, Cornwall


Cornwall Housing


Mark Worledge Construction

Contract Value


Services Provided

Site Investigation
Structural Design

The Project

James Lockyer Associates were contacted by Cornwall Housing after a small sinkhole opened up in the front garden of one of their properties.  A search of historic maps revealed a well in this area dating from the late 1800’s.  The depth of the well was probed and found to be just over 6 metres deep.

Working with a contractor appointed by the Council, the garden was excavated with a mini-digger to find the limits of the well, which were found to extend under the pathway and the entrance porch to the property.

A reinforced concrete slab was designed and constructed to cap the well and the area beneath the path and porch was underpinned to ensure stability.

Within two weeks of our engagement on the project, the works were complete and the garden had been reinstated.

  • Sinkhole
  • Sinkhole excavated
  • Hole filled with concrete.
  • Filled hole
  • Completed garden