Structra — Build & Estimate

Structra takes your project from initial dimensions to a floor plan, material estimate and complete shopping list.
Create house and room projects, draw accurate plans, calculate construction materials and keep every cost in one place. Structra is useful for home construction, renovation, interior finishing, utilities and outdoor projects.
Floor plan editor
• Draw walls and divide a building into rooms
• Add doors, windows, furniture, plumbing fixtures and other objects
• Move, rotate and resize plan elements
• Use grid snapping, zoom, undo and redo
• Save multiple floor plans inside a project
• Transfer editable plans between devices using the .structra format
• Draw manually or measure a room with the camera on a compatible device
Construction calculators
Estimate foundations, walls, timber framing, roofing, insulation, façades, floors, ceilings, tiles, paint, wallpaper, lumber, concrete, rebar, fasteners, wiring, heating, plumbing, drainage, ventilation, fences, paths and many other construction tasks.
Each calculation includes:
• clear input parameters;
• the calculation formula and symbol guide;
• results with a configurable waste allowance;
• material and package quantities;
• estimated costs;
• practical installation guidance.
Complete project wizard
Select a job and work through the required calculators in sequence. Return to previous stages, revise the inputs and build a connected project containing:
• a structured work plan;
• required material quantities;
• estimated costs;
• a shopping list;
• a complete project report.
Projects and estimates
Keep floor plans, rooms and calculations together. Add your own products, quantities, prices and notes. Mark purchased items and update completed estimates at any time. An optional demo project shows what you can build and can be removed whenever you want.
Export and sharing
• Detailed PDF reports with plans, dimensions, calculations and purchases
• Estimate export to CSV
• Import and export of editable .structra floor plans
Additional tools
• Calibrated spirit level
• Engineering calculator
• Formula recognition from a photo
• Length, area, volume, temperature and slope converters
• Metric and imperial measurement systems
• Light and dark themes
• English and Russian interfaces
Structra stores projects and calculations locally on your device. Core tools remain available without an internet connection.
Calculations are provided for reference. Verify load-bearing structures, utility systems and critical project parameters with a qualified professional.