Sirius Buildings Prefab Structures
Sirius Buildings Modular Building Structure Assembly Prefab Kit

3.0m x 3.0m Prefabricated Steel Structure Kit

$2,490.00
Structure Height
In Stock

Select 'Pick Up' or 'Sydney Depot' at checkout to collect your order.

View details

Nationwide Delivery

Set up your space faster than ever before. The Steel Structure Kit by Sirius Buildings makes construction clean, precise, and efficient. With fewer pre-cut parts, you reduce wastage and achieve superior structural integrity. Unlike heavy shipping container conversions, the Steel Structural Kit is purpose-built from the ground up, giving you flexibility and strength. Installation can be completed in just hours or days, depending on the size, allowing you to add your own finishing touches—doors, windows, cladding, and more.


Applications

  • Modular tiny homes
  • Granny flats / secondary dwellings
  • Home office studios
  • Backyard cabins or sleepouts
  • Extensions to existing structures
  • Small commercial pods (cafes, retail, kiosks)
  • Temporary or relocatable buildings
  • Secure storage facilities


Included

  • Galvanized steel base frame
  • Galvanized steel nesting channels for floor integration
  • Galvanized steel c-purlin cross members
  • Assembly bolts and fixings


Key Specifications

Base Sizes
3.0m × 3.0m (9.00 square meters)
Custom sizes available

Height Options
2.8m, 3.0m, 3.2m
Custom sizes available

Material
Light-gauge galvanized steel

Assembly Time
Typically 8–12 hours (2-person team, depending on kit size, site conditions, and other factors)

 

Note: On-site assembly is not included. Please consult with a licensed builder or carpenter before purchasing. Custom sizes are available upon request.