All these building materials to carry out hard landscaping but I bet Sami Alexander never bought any of it?
From past experience of employing building contractors, when I wasn't doing the job myself, it's usually they who have an account at a local builders' merchant to buy all the materials needed, then you pay the contractor when the job is finished. Perhaps through being parsimonious and such a controlling personality, Sami insisted on purchasing these goods himself.
From Mark Alexander's website:
Dad always got several quotes for the same job. He’d pick out labourers advertising in the windows of newsagents, in the Thompsons Local Directory, or who had been recommended to him. So, in late 2009 for example:
18 June: Dad purchased bricks and building materials for delivery to the house.
9 August: Wood Machinist RH replaced the side door frame and side door to the garage and gave dad a quote for fencing.
12 August: Landscape Gardener AH visited the house to mow the lawn.
21 August: Dad purchased more fencing and building materials.
30 August: Another Landscape Gardener, AB, visited the house to give dad a quote for block paving and relaying a patio.
4 September: Tree Surgeon GB visited the house to give dad a quote for reducing a willow tree.
5 September: I drove dad to a local builders’ merchant, where he met Tool Hire Manager KS.
We identified more than 40 contractors and labourers who my father had hired over the years. Contacting them has not yielded any new information, however, and we will need the public’s help to work out who may have been involved.