Updated June 2026 — prices reflect 2026 market conditions
Floor Plan Survey for Architects: What You Need
Architects require measured building surveys that capture accurate existing conditions to support design, planning, and building regulations. This guide covers what to specify in your brief.
What Architects Need from a Floor Plan Survey
| Element | Details | | --- | --- | | Walls | Structural walls, stud walls, wall thicknesses | | Openings | Door and window positions, widths, swing directions, sill and head heights | | Dimensions | Room sizes, wall lengths, spot heights | | Fixtures | Sanitary fittings, kitchen units, built-in furniture | | Vertical elements | Staircases (step counts), columns, beams | | Levels | Floor levels, ceiling heights, roof heights | | External elevations | All four façades annotated north/south/east/west |
Standard Deliverables for Architects
| Deliverable | Scale | Format | | --- | --- | --- | | Internal floor plans (all floors) | 1:50 or 1:100 | DWG + PDF | | External elevations | 1:50 or 1:100 | DWG + PDF | | Sections (long and cross) | 1:50 | DWG + PDF | | Roof plan | 1:100 | DWG + PDF | | Site plan | 1:500 | DWG + PDF | | BIM model | LOD 200–300 | RVT (Revit) |
Standard Scales
| Drawing | Scale | Purpose | | --- | --- | --- | | Floor plans | 1:50 | Planning applications | | Elevations | 1:100 | Planning applications | | Sections | 1:50 | Structural coordination | | Site plan | 1:500 | Planning context | | Location plan | 1:1250 | Planning submission |
2025 UK Costs
| Property Type | Cost (ex VAT) | | --- | --- | | 1–2 bed flat | £350–£450 | | 3–4 bed house | £500–£750 | | Small office or retail (<100m²) | £450–£650 | | Medium office or warehouse (100–300m²) | £650–£1,200 | | Large commercial | £1,200+ | | BIM model (add-on) | From £550 |
File Formats Architects Need
| Format | Use | | --- | --- | | AutoCAD DWG | Primary editable format | | PDF | Review and submission | | Revit RVT | BIM workflows | | E57 or RCP | Point cloud reference |
Frequently Asked Questions
Q: What scale should floor plans be?
1:50 for planning applications. Confirm with your LPA before briefing the surveyor.
Q: Do I need all floors or just the affected area?
All floors — for structural context and planning submission. Specify scope in your brief.
Q: What accuracy do I need?
±20mm for design work. Specify Band C or D in your brief.