• Not Assessed


  • Design
  • PM Manufacture
  • PM Construction

Modulous was founded in 2018 by a team of construction, technology, and manufacturing specialists to create an asset-light model for the design and delivery of sustainable homes in a direct response to the global housing crisis and escalating climate emergency.

Modulous has created an integrated digital and physical product suite that enables developers and contractors to build multifamily modular homes with no need for a factory, by leveraging the supply chain to manufacture its sub-assemblies. It makes the whole construction cycle, from feasibility to delivery on site, more efficient, cost effective, and transparent.

Modulous Kit of Parts

The Modulous Ltd. modular volumetric building system is constructed utilising hot- rolled steel primary floor, columns and light gauge steel external wall and ceiling infill panels. The system comprises three different structural kits which permit the system to be used in detached, semi-detached and terraced houses up to four storeys, and multi- tenanted buildings, such as apartments, student accommodation, boarding houses, hostels and hotels, up to eight storeys high.

The system is typically formed from a hot-rolled steel frame. Columns are formed from parallel flange channels (PFC S335JR), size dependent on loading requirements, and designed to be contained within the external wall thickness (180x90mm in the example received for this assessment). Each module has a minimum of four columns with intermediate columns if required for structural reasons. The floor ring beam is a 200mm x 90mm x 30Kg S355JR PFC floor ring beam. Module floors are constructed of 125 x 65mm S355JR at either side of columns locations. Intermediate floor beams 100 x 50mm S355JR PFC. These beams support a profiled metal deck to which a lightweight screed is applied. External walls, internal walls and ceiling cassettes are constructed of cold-rolled lightweight galvanised steel grade S390 + Z275. All internal walls are non-load-bearing.

Durability Assessment  Р60 Years

Limits on scope

  • Maximum 8 storeys for residential use subject to structural verification;
  • Fire protection information submitted for this assessment is limited to structures with a top storey height not exceeding 18m (measured in accordance with the Building Regulations 2010, as amended 2019, Approved Document B Diagram D6). 60 minutes structural fire resistance is required in accordance with Approved Document B, Table B4. Structures outside these parameters are not included in this assessment. As future project configurations may differ from those used for this assessment, all projects must be subject to individual fire mitigation assessments.
  • Bottom members in contact with foundations/sub-structure must be fully isolated from contact with moisture from the ground or external sources;
  • Where modules are located next to the ground, the void below the lowest module must be cross-ventilated a minimum of 1500mm2/m of external wall or 500mm2/m2 of floor area.
  • The ground below modules should be sealed to limit the moisture entering the void. Where the ground level in the void is below external ground level, consideration should be given to drainage.
  • Where insulated render and/or insulated brick slip cladding systems are to be used, a minimum 15 mm wide drained cavity must be maintained behind the insulation;

Site Projects

  • Land adjacent to 198 Romney Avenue, Lockleaze, Bristol BS7 9TE.¬†


  • Modulous Ltd. Steel-Framed Modular Volumetric Building System¬†
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