Houses could be built in Blenheim's quake-prone east with innovative engineering, says a councillor concerned that its subdivision potential is not being catered for. Work has begun on the Wai-iti subdivision in Blenheim. Photo: STUFF / Scott Hammond The eastern edge of Blenheim has been ruled out for urban expansion since the Christchurch earthquakes caused liquefaction that wrecked homes, streets and backyards a decade ago. The issue resurfaced as the Marlborough District Council plans major pipelines along Redwood St and Alabama Rd, through the eastern area., to prevent new sections from flooding drains. The council estimated the works would cost $17.4 million and take up to five years to complete. The first round of upgrades - burying an 80-metre-long culvert - has been completed.