Check out our customer feedback…
Annual Satisfaction Survey 2025 – conducted in January 2026 and sent to all customers who have received a utility search from Cornerstone during 2025. Total number of respondents: 172
How convenient is Cornerstone Projects to use?
“Having the reports collated for us is consistently valuable and continues to make a real difference to our projects.”
– City Council
“Excellent service. Always available to help and assist with any enquiries.”
– Land and Environmental Surveyor
How would you rate the quality of Cornerstone Projects’ service?
“Cornerstone Projects offers a first class service and the team are always accessible and happy to help. We wouldn’t hesitate to offer their services to others.”
– Telecomms Designer/Contractor
“The team at Cornerstone are very accessible and professional, and the service they offer is first class.”
– Telecomms Designer/Contractor
How would you rate the speed of the Cornerstone Projects’ service?
“I always find the service very quick and easy to use and everyone I correspond with is really helpful and friendly. It’s great there is the support for bespoke quotes of the type we frequently ask for.”
– Consulting Engineer
“Very helpful, quick turnaround and listen well to requirements and timescales and always deliver.”
– General Contractor
How would you rate the value for money of the service?
“We’ve used Cornerstone for many years and have always found the pricing, speed, and overall ease of use to be excellent.”
– City Council
“We have always been impressed with the reporting, with the Interim report being incredibly useful for assisting with the design of Investigations. Thank you for your service and we look forward to using yourselves in the near future!”
– Consulting Engineer
“The best in the business!!”
– Consulting Engineer
How likely is it that you would recommend this service to a friend or colleague?
What is Net Promoter Score?
Net Promoter Score (NPS) works by gauging customer loyalty through a single question survey, measuring the likelihood of a customer recommending a company’s products or services. Respondents rate their likelihood on an 11-point scale, from 0 to 10, and are categorized into Promoters (9-10), Passives (7-8), and Detractors (0-6). The NPS is calculated by subtracting the percentage of Detractors from the percentage of Promoters, resulting in a score between -100 and +100.
Do you work with any other utility search providers?
Will you be using Cornerstone Projects again in the future?
This year, we have created a document that essentially answers the majority of comments that we received. We have included this as a PDF that you can view here.