Extensions
Bring drawings, specifications and known site requirements together for a first-pass estimate.
For UK builders and main contractors
Pricing an extension, renovation or refurbishment? Turn your drawings and project details into a structured first-pass estimate.
Check the scope, quantities and assumptions. Adjust the rates and margin to suit your business, then use the reviewed estimate in your own quoting process.
Start my free estimateCreate your account, then add your project details.
See what you’ll reviewYou approve the final price.
Quotify gives you the working to review.
Workflow illustration. See the real product screen below.
Built around the jobs you price.
ExtensionsRenovationsRefurbishmentsFrom builders who have tried Quotify
≈£4,000 pricing gap
Quotify helped Maplewood identify a gap of around £4,000 in an estimate.
“It was pretty bang on with the measurements of the brick. I'm happy with that.”
“Your system is within about 5% of what my estimated costs were.”
Customer feedback edited for clarity. Timings and comparisons are approximate and relate to individual projects. You still review the scope, quantities, rates and assumptions.
See the actual product
A line-by-line starting estimate gives you something to check. Open an item to inspect the scope, cost make-up and assumptions behind it.

Compare the scope and quantities with the drawings and what you know about the site.
Review labour, materials and plant. Replace suggested rates and allowances where needed.
Inspect assumptions and flagged risks before deciding what belongs in your final quote.
From your information to your review
Try a project you are pricing now, or a completed job whose costs you already know.
Create an account, add project details, drawings, specifications and any known requirements or exclusions.
Check the scope, quantities and assumptions. Set your rates and margin.
Generate your reports or export the estimate. Approve the final price, then share it with your client.
Quotify is an estimating assistant. The output needs your professional review before you use it to price or agree work. It does not guarantee that every scope item or risk has been identified.
For a regular flow of building work
For builders and main contractors who prepare estimates for their own clients while running jobs.
Bring drawings, specifications and known site requirements together for a first-pass estimate.
Make the planned work and assumptions visible, then check them against the existing building.
Review the scope, allowances and costs before fitting the estimate into your own quote.
Real customer stories
The useful detail is in what they did next: working through a quote, checking quantities and deciding what to send.

Customer story · October 2026
Stephen Tarr worked through a detailed quote on his phone and sent it to his customer. He valued the amount of detail available, and put his time at about 25 minutes.
Read Stephen’s story
Customer review · September 2026
Neil Roper checked the brick measurements on one job against his own review. He found them close and highlighted the smaller scope items he wanted included before using the wider estimate.
Read Neil’s reviewTry it on a real project
Start with a complete project, including the estimate, risks, client reports and internal reports. Review the result before choosing to subscribe.
For builders regularly pricing extensions, renovations and refurbishments.
See the pricing detailsBefore you get started
This page focuses on UK builders and main contractors pricing extensions, renovations and refurbishments. There is no minimum project value in this offer. The scope and quality of your project information still matter.
Add your project details and the relevant drawings, specifications and notes. Include known requirements, exclusions and site conditions. Clear information gives you a better basis for reviewing the estimate.
Yes. You can edit quantities, rates and the estimate breakdown, then set margin and contingency. Check suggested costs against your own labour rates, supplier prices and site knowledge.
The estimate can include assumptions, allowances and flagged risks. These need checking against the job. Quotify does not guarantee that it will identify every omission, so resolve missing information before agreeing the price.
You can generate client and internal reports and export in PDF, Excel and Word formats. Review the output and choose what your client sees before you send it.
The current signup offer includes a first complete project with the estimate, risks, client reports and internal reports.
Choose £100 a month for five projects each month, or £999 a year paid upfront for 60 projects across 12 months. The yearly plan saves £201 compared with 12 monthly payments. Start with your first complete project free, then choose how to continue. Contact us to start your plan.
No call is needed to create an account. You can start with the signup page and work through your first project. If you need help, use the support options in Quotify.
Your next estimate starts here
Get a first-pass estimate, check the detail and make the pricing your own.
Start my free estimateYour review comes before your final quote.