Commercial proposal
Construction company
Draft proposal · turnkey steel-frame buildings
Date
September 23, 2026
Prepared for
Demo order
Demonstration preliminary estimate
Generated locally by the project's actual estimate module using fictional parameters. Prices are demonstration values and do not constitute an offer from any construction company.
Building parameters
Building type
Warehouse
Region
Example region
Dimensions (L × W × H)
18 × 12 × 4.5 m
Floor area
216 m²
Frame
Steel frame
Walls
Profiled steel sheeting
Roof
Profiled steel sheeting
Foundation
Foundation excluded
Wall area
270 m²
Roof area
226.8 m²
Specification and estimate
Steel frame
$14,042
| Item | Quantity | Unit |
|---|---|---|
I-beams / channels (per steelwork design) Estimated steel usage: 31.5 kg/m² of footprint | 6.81 | t |
Alkyd primer + enamel, RAL 7016 | 109 | kg |
Steelwork fabrication Workshop welding | 6.81 | t |
Steelwork painting | 6.81 | t |
On-site steelwork erection | 6.81 | t |
Walls
$4,196
| Item | Quantity | Unit |
|---|---|---|
C8 profiled wall sheeting, RAL (0.5 mm) | 288.9 | m² |
Roofing screw 4.8 × 35, RAL 7004 | 2312 | pcs |
Wall sheeting installation | 270 | m² |
Roof
$5,186
| Item | Quantity | Unit |
|---|---|---|
C21 profiled roof sheeting, RAL (0.5 mm) | 242.7 | m² |
Roofing screw 4.8 × 60, RAL 7004 | 1942 | pcs |
Profiled roof sheeting installation | 226.8 | m² |
Cost summary
Indicative range: $21,090 - $26,940
Included in the estimate
- •Design (standard steelwork documentation)
- •Structural steel frame fabrication
- •Anti-corrosion treatment / painting
- •Frame erection on a prepared foundation
- •Wall cladding: profiled steel sheeting
- •Roofing: profiled steel sheeting
Excluded from the estimate
- •Foundation (requires a separate estimate based on ground conditions)
- •Electrical systems, lighting and power distribution
- •Heating and ventilation
- •Interior wall and ceiling finishes
- •Concrete floors / industrial self-leveling floors
- •Plumbing, water supply and drainage
- •Low-voltage systems (CCTV, security)
- •Connections to external utilities
- •Material delivery / logistics (quoted separately)
- •Design review, permits and initial approval documents
- •Crane beams and overhead cranes
- •Mezzanines and additional floors
These items can be quoted separately after discussion with the manager.
Next step: manager review
This is a preliminary estimate. The scope, terms and final price of an actual order require review and approval. The manager sends the proposal to the client.