Cromlech Close is a social housing development for Dun Laoghaire-Rathdown County Council consisting of 15 apartments and terraced houses on a corner site close to the main Kilternan – Dundrum road.
SDS provided design and details for :

  • all structural elements including
  • raft foundations,
  • padstones,
  • base plates,
  • ground floor,
  • first floor,
  • roof,
  • roof trusses and bracing,
  • balconies, and
  • retaining walls.
  • civil engineering elements, such as
  • the attenuation tank,
  • valve & hydrant chambers,
  • drainage,
  • road gullies,
  • manholes,
  • paving, and
  • footpaths
    Specifications were prepared for concrete, earthworks,
    plastering, steelwork, timber and siteworks.

Block A – Residential/Retail building 1,380 sq m.
This block is a 3-storey building which has 7 residential units on the first floor and 8 small retail units on the ground floor.
At each end of the building is a single storey apartment with balcony and above the central retail units there are 6 duplex apartments, each with a roof garden.
It was constructed using traditional insulated cavity, masonry walls with a structural frame of in-situ reinforced concrete and precast hollowcore floors and roof.


This is a private gated development of five houses which were constructed on raft foundations on engineered fill material in Sandy Lane Bushey, Watford UK.

A development of seven exclusive, architecturally-designed, bespoke detached houses on a seafront close to Galway city which included an on site wastewater treatment system with percolation area and associated site works .


Our clients are in public and private sectors, including government bodies, developers, main contractors and owners. Market areas in which we currently work are commercial, residential, industrial, hotel and leisure, education, and water engineering. 

Shane O’Farrell
Lidl Head of Property NW London
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SDS design engineers & architects developed a prototype precast concrete store in London. The aim was to reduce the construction time by at least 20% but also to maintain the visual appearance of the store. The SDS team completed the brief successfully.
Cillian Owens
Contracts Manager, John Sisk & Son Limited Ireland
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I have worked with SDS design engineers since 2005. In my experience SDS provide quality, cost effective designs on time and within budget.
Cathal Scott
Practice Manager, CQS Group
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We analysed numerous foundation solutions for retail stores over the years and found that the SDS designed lean raft foundation for store buildings is the most efficient foundation with respect to cost and materials used.