At Cornerstone Quantity Surveying Ltd, we provide clear, reliable, and cost-effective solutions for clients across London and the South East. Whether you’re a homeowner, developer, contractor, or investor, we help you manage costs, reduce risk, and deliver your projects with confidence.
Our work is grounded in precision and integrity — from the earliest feasibility stages through to project completion. We combine technical expertise with transparent communication to give you the insight and assurance needed to make informed decisions. Every recommendation we make is backed by experience, analysis, and a commitment to achieving the best possible value for your investment.
At Cornerstone, we see ourselves as more than consultants; we’re your partners in progress. By understanding your priorities and aligning with your objectives, we help turn plans into results — efficiently, accurately, and with complete confidence.
Our Services.
At Cornerstone Quantity Surveying Ltd, we provide expert cost consultancy at every stage of construction. From early planning to final account, our focus is on accuracy, transparency, and control.
Cost Planning & Estimating.
Accurate cost planning is the foundation of a successful project. We provide detailed estimates and clear financial breakdowns from the outset, giving you full visibility and control over your budget from day one.
02
Contract Administration.
We manage contracts with precision and transparency, ensuring every stage of your project runs smoothly. Our proactive approach helps prevent disputes and keep all parties aligned from start to finish.
03
Project Management Support.
From feasibility to completion, we provide expert support to keep your project on track. Our hands-on approach ensures budgets, timelines, and quality standards are carefully managed.
04
Final Accounts & Valuations.
We deliver fair and accurate valuations to ensure every cost is accounted for, resolving outstanding matters efficiently and bringing every project to a confident close.
Why Choose Us.
Our clients trust us for clear communication, expert advice, and a commitment to getting every detail right. We work with businesses, developers, contractors, and investors across London and the South East, adapting our approach to projects of every scale.
- Developers seeking accurate cost management
- Contractors looking for professional QS support
- Architects and designers requiring cost consultancy
- Homeowners planning extensions or refurbishments
We’d love to discuss how we can support your next project.
ryan.macdonald@cornerstoneqs.co.uk
Based in Hertfordshire – working across Greater London and the South East
- Local expertise in London’s construction market
- Transparent, client-focused service
- 20+ years of professional experience
- Commitment to accuracy, reliability and results