Accurate and easy to understand, our online building estimates
bring architectural visions to life with a full breakdown of
materials, plant and labour.
The UK’s Leading
Our team of experienced building estimators delivers accurate and reliable cost planning for residential projects.
Working with you to bring your visions to life via accurate & complete estimates to support your architectural designs. Our detailed cost plans give your clients the confidence to proceed — with no surprises.
Win more work with clear construction quoting, detailed building estimates, and professional estimating services ready to share with clients. Our documents are formatted to impress — and help you close more tenders.
We’re here to help all the way. Providing everything you’ll need to simply & cost effectively manage and unbiasedly cost your building or extension project — giving you full control from day one.
Planning an extension, renovation, or new build? We provide clear, accurate cost estimates so you know exactly what your project should cost before you commit to a builder — removing the risk of unexpected bills.
Support your trade customers with accurate materials take-offs and cost breakdowns. ProQuant helps merchants add real value to client relationships by providing detailed, project-specific material estimates fast.
Accurate cost planning is critical at every stage of development. ProQuant provides reliable, regionally adjusted estimates that support appraisals, planning applications, and contractor negotiations with confidence.
“The key for me is the attention to detail, they get everything without ever missing bits which wasn’t the case with others I’d used in the past.”
“Compared to what I saw before I started working with them It’s an incredible format. I’d say honestly that I won a lot of my work just from the presentations they supply and the way they set it out for me. ”
“The service from the guys is perfect too, any questions or queries they’re always available to answer and help, really efficiently”
I’ve worked with the team for 4 years now. I think how we’re provided multiple formats is much better than the services I had used previously. Sometimes we act as contractor, others as designer so having tender, quote and materials list formats is really helpful for our differing projects. I also like being able to call Alex and speak direct, really straight forward and simple. A very personal service. Second to this the pricing is great and the projects are delivered on time. Again, having Alex available and happy to push through anything urgent makes it feel very personal.
I’ve worked with the ProQuant team for around 5 years now. Previously I used other surveyors but was never pleased with the quality of their service. The key for me is the attention to detail, they get everything without ever missing bits which wasn’t the case with others I’d used in the past. There’s also no messing about, I really appreciate the level of aftercare. They’re always happy to help if I need to make small adjustments. We’ve now developed a great relationship as they seem to genuinely care about our business.
I’ve worked exclusively with the ProQuant team for 7 years. Firstly, they simply have the most competitive pricing and secondly, anytime I want to make amends they’re always there and very helpful. Both of these combined with the speed they deliver the estimates is why I continue to use them for all my jobs.
I’ve been working with the guys a fair few years now. Being totally honest I found as soon as I started working with them I started winning all my jobs, at least 9/10 and I’ve not lost a penny on the estimates they’ve priced for me. The difference is when I was getting estimates from elsewhere, we just weren’t winning. This was because there was lots of unknowns or even arguments at the end part. I’d say the actual building bit of my job is the easy bit, it’s the finance side that gets tricky, and what’s great about ProQuant is it makes everything black and white, nothing is questionable as its all broken down really clearly which I then use to show exactly what has been done and the prices as agreed for each part of the job
I’ve been working with the guys for 4 or 5 years now, their business ethics are great. The way they answer the phone, the way they support any question I have. If I need to make an adjustment or add things in after it’s not a problem, they help make it happen quickly, the flexibility it offers the contractor to win jobs is outstanding. It’s so precise, even down to the number of rolls of cable etc, I see it as my builder contractor’s bible. Its crystal clear for the client and for myself, there’s no room for any mistakes. Compared to what I saw before I started working with them It’s an incredible format. I’d say honestly that I won a lot of my work just from the presentations they supply and the way they set it out for me. What I also really like is they make it so affordable, it allows me to tender for so many jobs. So, what was previously a risk no longer is, as the cost is affordable its removes it being a gamble. Now I win almost all of them and really have to credit ProQuant for their help
I’ve been working with Alex and Grant for 4 or 5 years now. They’re just really good at what they do, if you ask to push something through or need a favour, say I forgot to put something in then they’re always there to help, no problems. Really accommodating and friendly bunch, I have a great relationship and speak with them like mates now. Regarding the estimate itself, it’s brilliant, I couldn’t do what they do and its vital for me and my business.
I’ve been working with the guys for a number of years now. The way it works is great, how it all brakes down in layman’s terms, it’s so easy to read and understand. The service from the guys is perfect too, any questions or queries they’re always available to answer and help, really efficiently
“I found as soon as I started working with them I started winning all my jobs, at least 9/10 and I’ve not lost a penny on the estimates they’ve priced for me.”
“Regarding the estimate itself, it’s brilliant, I couldn’t do what they do and it’s vital for me and my business.”
If you are looking for an online planning and building regulation plans service, then Proquant can help and provide you with a fast and high-quality service at a low fixed cost.
ProQuant’s unique carbon estimating tool will now be used, at no additional cost – we’ll do all of the calculations, providing you with an accurate breakdown of your project’s emissions, and the option to offset the work with our partners, Ecologi.
Building Estimating Services for Extensions from £100 plus VAT
Unlike other services, ProQuant estimates are managed for you in the UK, by our
dedicated in-house team of highly skilled estimators
Suitable for anyone looking for a reliable building services estimator for extensions and residential projects.
ProQuant produces detailed building cost estimates for residential projects across the UK. Each estimate includes a full breakdown of materials, plant hire, and labour costs, all regionally adjusted to reflect local pricing. Our documents are professionally formatted and ready to use for tendering, quoting clients, or managing your own self-build.
Our building estimating services start from £100 + VAT for extensions and residential projects. The exact cost depends on the size and complexity of your project. We keep our pricing competitive and affordable so you can tender for more jobs without it becoming a financial risk — as many of our clients have found, the cost of an estimate is far outweighed by the work it helps you win.
We offer a same-day express service for urgent requirements. Standard turnaround times vary by project complexity, but our in-house team works efficiently to get your estimate back to you as quickly as possible. If you have a deadline, just let us know — we’ll always do our best to accommodate it.
ProQuant provides estimates in multiple formats — including tender documents, client-ready quotes, and materials lists — so you can use the right format for each situation. Whether you’re acting as contractor, designer, or project manager, we have a format that fits. You can download and view your documents anytime through your ProQuant online account.
ProQuant works with architects, builders, self-project managers, homeowners, property developers, and merchants across the UK. Whether you need an estimate to support an architectural design, win a construction tender, manage a self-build, or simply understand the true cost of a home extension — our service is built around your needs.
Yes — making amendments is straightforward with ProQuant. Our team is always available to help if you need to adjust figures, add items, or make small changes after delivery. This flexibility is something our long-term clients value highly. You can also manage and update your costs directly through your online ProQuant account at any time.
Absolutely. All ProQuant estimates are 100% regionally accurate, meaning your costs reflect actual local labour and material rates in your area — not national averages that can be wildly off. This is one of the key reasons our estimates help builders win jobs and avoid disputes at the end of a project.
Yes — our documents are professionally formatted and ready to present directly to clients. Many builders tell us the quality of their ProQuant documentation has directly helped them win more work, simply because of how clearly and credibly the costs are set out. Everything is broken down in plain language so there’s nothing questionable or open to dispute.
Yes — ProQuant’s unique carbon estimating tool is included at no additional cost. We calculate the carbon emissions for your project and provide a full breakdown. You’ll also have the option to offset your project’s emissions through our partners, Ecologi. It’s a simple way to demonstrate your environmental commitment to clients.
Getting started is simple. Request a quote online or call our UK-based team directly on 01625 420821 — we’re always happy to talk through your project requirements. Once we understand what you need, we’ll confirm the cost and turnaround time, and our estimators will get to work. You’ll receive your completed documents straight to your ProQuant account.
Can’t find the answer you’re looking for? Our team is happy to help.
Access your estimates and edit your settings anytime, anywhere.
Our professional building cost estimator helps you accurately calculate building costs, avoid unexpected expenses, compare construction quotes, and plan your project more efficiently.
Whether you need simple building estimates or a complete construction estimating service, ProQuant delivers accurate and reliable results.
Start your building estimate today from just £100 + VAT.
