Free UK Construction & Professional Fee Calculators 2026
Architect fees (RIBA stages), structural engineer fees, building surveyor costs, planning applications, party wall, scaffolding, asbestos removal and more — updated for 2025/26. Free to use, no account needed.
Architect Fees (RIBA Stages) Calculator
Estimate architect fees across RIBA stages 0-7 — design, planning, technical, construction and handover.
Structural Engineer Fee Calculator
Calculate structural engineer fees for residential and commercial projects — beam design, load calculations and reports.
Building Survey Fee Calculator
Estimate RICS building survey costs for HomeBuyer, Building Survey and condition report levels.
Quantity Surveyor Fee Calculator
Calculate QS fees as a percentage of project value for cost management, bills of quantities and contract administration.
M&E Contractor Preliminaries Calculator
Estimate mechanical and electrical contractor preliminaries as a percentage of M&E package value.
Planning Application Fee Calculator
Calculate planning fee for England (December 2023 fees) — householder, full planning, change of use.
Party Wall Surveyor Fee Calculator
Estimate party wall surveyor fees based on work type — notice serving, award preparation, dual surveyors.
Site Manager Day Rate Calculator
Set a profitable day rate based on certifications (CSCS, SMSTS), experience level and overhead recovery.
Scaffolding Cost Calculator
Estimate scaffold hire cost for residential and commercial projects — standard, birdcage and tube-and-fitting.
Demolition Cost Calculator
Calculate demolition cost per m² based on structure type, debris removal and environmental requirements.
Asbestos Removal Cost Calculator
Estimate asbestos removal cost by material type, area (m²) and UKAS licensed contractor requirements.
CDM Principal Designer Fee
Calculate PD fee as a percentage of project value for CDM 2015 compliance on notifiable projects.
BIM Implementation Cost Calculator
Estimate BIM Level 2 implementation costs — software, training, hardware and process change.
UK Construction Costs & Professional Fees 2025/26
Construction professional fees in 2025/26 are shaped by RICS guidance notes, RIBA fee benchmarks, updated planning fees (December 2023 increase), and CDM 2015 compliance requirements. With planning application fees for residential development rising to £578 per dwelling in England and architect fees typically 8-15% of construction cost, understanding these costs upfront is essential for project viability. These calculators help developers, homeowners and construction professionals model fees and costs across the full project lifecycle.
Frequently Asked Questions
- What are the current planning application fees in England?
- From December 2023, planning fees in England increased significantly: Householder extension — £258; Full planning (residential, per dwelling) — £578; Change of use (commercial to residential) — £578; Prior approval — £120. These fees are set by the Ministry of Housing and Communities & Local Government. Separate fee structures apply in Scotland, Wales and Northern Ireland.
- What is a typical architect fee percentage in the UK?
- RIBA fee benchmarks for 2025/26: typically 8-15% of construction cost for full RIBA stages 0-7 on residential new build; 10-18% for commercial projects; higher for complex, listed or heritage work. Many architects charge hourly rates for smaller projects or initial feasibility stages. The percentage rises for lower-value projects due to minimum viable fee levels.
- When do CDM 2015 regulations apply to a construction project?
- CDM 2015 (Construction Design and Management Regulations) applies to all construction projects. However, notifiable projects — those lasting more than 30 working days with more than 20 workers simultaneously, or exceeding 500 person-days — require a Principal Designer and Principal Contractor to be formally appointed. The client must notify the HSE before work starts on notifiable projects using the F10 notification.
- Do I need a party wall agreement for a house extension?
- You need to serve a party wall notice if your extension work: excavates near a boundary within 3-6 metres of a neighbour's structure; builds on or at the boundary (the "line of junction"); or affects a shared party wall (e.g. removing a chimney breast on a shared wall). Neighbours have 14 days to respond. If they consent in writing, no surveyor is needed. If they dissent or do not respond, both owners must appoint surveyors to prepare a Party Wall Award.