Estimating Services for Contractors and Sub-contractors in London & the South East
Fast, accurate BOQs, take‑offs and tender pricing support to help contractors and sub-contractors win work and deliver projects confidently.
Thomas Callum Associates provide reliable estimating services for contractors and sub-contractors across London and the South East. Our estimating support helps you price tenders accurately, avoid under‑ or over‑pricing, and submit competitive bids based on clear, consistent documentation.
Whether you need a full Bill of Quantities, a detailed take‑off, or complete tender pricing support, we deliver fast, precise and professional estimating you can trust.
Fast, Accurate Estimating for Contractors and Sub-contractors
We understand the pressure contractors and sub-contractors face when tendering for work. Deadlines are tight, drawings change, and pricing must be both competitive and commercially safe. Our estimating service gives you the clarity and accuracy needed to submit confident bids without slowing down your workflow.
What Our Estimating Service Includes
Bills of Quantities (BOQs)
Full BOQs prepared to industry standards, giving you a clear breakdown of quantities, materials and labour requirements.
Detailed Take‑Offs
Accurate take‑offs from drawings, ensuring your tender reflects the true scope of works.
Tender Pricing Support
Assistance with pricing tenders, including labour rates, material costs, preliminaries and risk allowances.
Schedule of Works Preparation
Clear Schedules of Works that help you price consistently and reduce ambiguity during tendering.
Value Engineering Options
Cost‑saving alternatives and specification adjustments to help you submit competitive bids.
Clarification & Query Support
We help you identify missing information, inconsistencies and tender queries before submission.
Why Contractors Choose Our Estimating Services
Fast Turnaround
We work to your tender deadlines and provide clear, accurate estimating without delays.
Accurate & Detailed
Our BOQs and take‑offs are prepared with precision, reducing pricing errors and commercial risk.
Competitive Tendering
We help you submit strong, competitive bids that reflect the true scope of works.
Clear Documentation
Every contractor receives structured, easy‑to‑price documentation that improves tender accuracy.
London & South East Specialists
We understand regional pricing trends, contractor rates and local construction methods.
FAQ Section
How quickly can you complete estimating work?
Turnaround depends on project size, but most tenders are completed within 10 - 15 working days. Faster turnaround may be available on request.
Do you work with small contractors?
Yes — we support contractors of all sizes, from sole traders to main contractors.
Can you prepare BOQs from PDF drawings?
Absolutely. We can work from PDFs, DWGs or scanned drawings.
Do you provide fixed‑fee estimating?
Yes — all estimating services are priced individually, and we provide clear fixed‑fee proposals before starting.