Properly comparing builder quotes involves much more than just looking at the final price.
Two quotations may appear similar at first glance but include different materials, allowances, exclusions or assumptions. These differences can significantly affect what you eventually pay once construction begins.
To make a fair comparison, every builder should be pricing the same project information and their quotations should be reviewed on a like-for-like basis.
Here are some of the main things to check.
Make Sure Every Builder Has Priced The Same Information
Before comparing prices, confirm that each builder has received the same drawings, specifications, and supporting documents.
Construction drawings are often revised as a project develops. If one contractor prices an older set while another uses the latest drawings, the quotations may cover different amounts of work.
The same applies to specifications. These provide important information about materials, finishes and standards that may not be obvious from the drawings alone.
Using consistent information gives every contractor the same starting point.
Compare The Scope Of Works Line By Line
Do not compare only the final totals.
Work through each quotation section by section and check what each contractor has included. For example, compare groundworks against groundworks, roofing against roofing and electrical work against electrical work.
This can quickly highlight missing items or areas where contractors have interpreted the project differently. If one builder has included an element that another has not mentioned, clarify whether it has genuinely been excluded or is included elsewhere in their price.
Check Allowances And Provisional Sums
Pay particular attention to provisional sums and other allowances. These are often used where the final cost of an item cannot yet be confirmed.
One builder might allow £8,000 for a kitchen, while another might allow £15,000. Their overall quotes may appear close, but the level of finish allowed is very different.
The same issue can apply to bathrooms, flooring, landscaping and work affected by unknown site conditions.
Lower allowances can make a quotation appear more competitive while leaving greater potential for additional costs later.
Identify What Has Been Excluded
Every quote should be checked for exclusions. These might include decorating, scaffolding, waste removal, utility connections, landscaping, specialist surveys or certain fixtures and fittings.
Do not assume something is included because it appears on the drawings. If one contractor has excluded an item that another has priced, you need to account for this before comparing their final figures.
It is often useful to create a simple list of exclusions for each contractor so differences are easy to see.
Look At Unusually High Or Low Prices
Significant differences between quotes deserve further investigation.
A high price does not necessarily mean a contractor is expensive, and a low price does not automatically represent good value.
One builder may have included work others have overlooked. Another may have used different quantities, cheaper materials or lower provisional allowances.
If most contractors have priced a particular element at around £20,000 and one has allowed £10,000, ask why.
Understanding the reason for the difference is more useful than simply selecting the lowest figure.
Compare Materials And Specifications
Make sure contractors have allowed for comparable materials and finishes. For example, two builders might both include windows within their quotation but price completely different products.
The same can happen with flooring, sanitary ware, insulation, kitchens, doors and other finishes. A cheaper quotation may therefore reflect a lower specification rather than a more competitive price for the same work.
The required materials and standards should be clearly defined before quotes are requested.
Check VAT And Payment Terms
Make sure VAT is treated consistently across all quotations.
One builder may provide a VAT-inclusive total, while another may show their price excluding VAT. Comparing the headline figures without checking this could give a misleading impression.
Payment terms should also be reviewed. Look at deposits, interim payments, stage payments and when the final balance becomes due.
The overall contract price may be similar between two builders while the proposed payment arrangements are very different.
Consider Potential Variations
A variation is a change to the agreed work that affects the original contract price.
Some variations are unavoidable, particularly when unexpected site conditions are discovered. Others arise because something was unclear or missing from the original quotation.
This is why omissions matter. If a contractor has not included an essential element of the project, it may later appear as an additional cost rather than forming part of the original price.
Understanding these potential gaps before appointing a builder can give you greater control over the final budget.
A Simple Example
Imagine Builder A quotes £198,000 and Builder B quotes £194,000. Builder B initially appears £4,000 cheaper.
However, Builder A has included scaffolding, waste removal and £12,000 for flooring. Builder B has excluded scaffolding and waste removal and allowed only £6,000 for flooring.
Once those differences are taken into account, Builder B may no longer be the cheaper option. This is why a like-for-like comparison is essential. The headline figure only tells part of the story.
When Can An Independent Tender Review Help?
Comparing several detailed contractor submissions can become difficult, particularly when each builder uses a different format.
An independent quantity surveyor can review the quotes against the project information, compare inclusions and exclusions and highlight potential cost risks.
Bhangals Construction Consultants provides tender analysis alongside wider quantity surveying services and cost planning, helping clients compare contractor pricing before appointing a contractor.
Its quantity surveying service specifically includes tender analysis and cost planning.
Compare Like For Like Before Choosing A Builder
The cheapest quote is not necessarily the best value.
Before choosing a contractor, make sure every builder has priced the same drawings and specification. Compare the scope, materials, allowances, exclusions, VAT and payment terms rather than relying on the final total alone.
Most importantly, investigate differences. Taking the time to understand what each builder has actually included can help you make a more informed decision and reduce the risk of unexpected costs appearing once construction begins.