Cantilever house in Co Antrim

Renovating this 1950s seaside house meant rebuilding the structural supports for the cantilever bedroom that takes in the view.

In this article, we cover this cantilever house renovation project including:

  • Story behind the historical, architecturally designed cantilever house
  • How the homeowners used existing furniture from the 1960s as their starting point
  • How the homeowners chose their architect – how they made their shortlist and why they chose theirs
  • Choice of hiring architect as project manager and on what terms, how it went on site
  • Choosing the builder and organising stage payments
  • Changes made to the inside with full before and after floor plans
  • Biggest splurge and budget saving tips
  • LPG boiler sizing and underfloor vs radiators
  • Electrics tips: whether to choose LEDs, pendant built from scratch
  • Tiling tips: finding the right type, working with supplier and tiler to get the look
  • Structural issues with the roof and choice of reroofing
  • Cantilever supports: details of how it was redesigned and rebuilt
  • Choice of hiring interior designer and why it saved them money
  • Kitchen, utility room, and wardrobe designs with space saving tips
  • Reason for build delays and top tips to keep on top of schedule


House size before: 200 sqm 
House size after: 245 sqm
Plot size: 1 acre
Bedrooms: 5
Project cost: £400k
Construction: Steel and block
Heating and hot water: LPG boiler
Ventilation: mechanical 


Written by Astrid Madsen

Astrid Madsen is the editor of the SelfBuild magazine. She previously held the same role in an Irish trade publication, before that she worked at the National Standards Authority of Ireland. She graduated with a BA in Urban Studies from Columbia University in New York and holds an MBA from the Instituto de Estudios Bursatiles in Madrid. France of origin, she now lives in Portarlington, County Laois, where she's taken on the task of renovating a listed building! Email

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