Modular house

A modular house is constructed off-site in factory-built modules and then transported and assembled on plot, typically achieving faster build times and tighter quality control than traditional methods. In Greater London, modular schemes have been used in regeneration projects in Lewisham and Brent and as temporary accommodation in Hackney. Drainage characteristics include prefabricated internal soil and waste runs designed to align between modules, with external connections made to a conventional underground drain system on site. Common issues can include leaks at module-to-module connections, misalignment of stacks during installation and difficulty accessing concealed pipework for later repairs. Owners considering modular schemes should verify the warranty position on internal drainage and request as-built drawings showing pipe routes. Building Regulations Part H still applies to the completed property and its connections to the public sewer.