Time to estimate
01 / 09Traditional QS
5–10 working days
Kwave AI
Under 10 minutes
#1 AI bill of quantity software
Construction estimation just got a 10x upgrade.
AI-powered quantity surveying for contractors, architects and QS professionals. Upload your drawings or describe your project and get accurate cost estimates in under 5 minutes
- No credit card required
- 3 free projects included
- Region-calibrated pricing data
Try a prompt like:Generate a bill of quantities for a 3-storey rear extension.
£110B+
UK construction output annually
330K+
SME contractors in the UK
43%
of projects exceed budget by 10%+
5 mins
average time to first estimate
The problem
Construction estimation is broken.
Every project starts with a number. Getting that number has always been the expensive, slow, painful part. Until now.
Speed
5–10 days
To produce a BOQ manually
A qualified QS can take up to two weeks on a complex project. By then, your tender window is closing and your competitor already submitted.
Cost
£3,000+
Per project when outsourcing QS work
Hiring a QS firm for every estimate isn't viable for SME contractors. So most rely on gut feel and get burned at invoice time.
Accuracy
43%
Of UK projects exceed budget by 10%+
Manual spreadsheets, stale pricing data, and zero regional calibration combine to produce estimates that rarely survive first contact with reality.
Scale
£20B
Lost annually to UK construction cost overruns
The industry bleeds billions every year to estimates that didn't account for current material costs, regional labour rates, or project complexity.
How it works
A new era of construction estimation is here.
No training needed. No QS degree required. Just describe your project, or upload what you have and let Kwave handle the rest.
01PDF · Excel · Word · Natural language
Describe or upload
Type your scope in plain English, or drop in a BOQ, drawings, spec, or Excel cost plan. Kwave reads PDF, Excel, and Word.
site-plan.pdfspec.docxcost-plan.xlsx
02Regional · Live data
AI extracts & prices
Quantities, materials and units are pulled out, then matched against a live regional pricing database calibrated quarterly.
Substructure£18,420
Frame£32,100
Finishes£12,860
03PDF · Excel · Client-ready
Export your BOQ
Refine via follow-up prompts, then export a branded PDF or editable Excel BOQ — ready to send to your client.
BOQ.xlsxBOQ.pdf
Why Kwave
Nothing else does what Kwave does.
This is what a 10x upgrade actually looks like in practice.
Cost per project
02 / 09Traditional QS
£500 to £3,000+
Kwave AI
From £9
How you interact
03 / 09Traditional QS
Email briefs, calls, back-and-forth
Kwave AI
Chat in plain English, instant response
Pricing data
04 / 09Traditional QS
Based on QS experience and memory
Kwave AI
Live regional database, updated quarterly
Regional accuracy
05 / 09Traditional QS
Varies by individual QS knowledge
Kwave AI
Calibrated by region: London, North West, Midlands, Scotland, Wales
Revisions
06 / 09Traditional QS
Re-engage QS, wait again
Kwave AI
Refine in real time via follow-up prompts
Availability
07 / 09Traditional QS
Office hours only
Kwave AI
24/7, instant
API / integration
08 / 09Traditional QS
Not possible
Kwave AI
Full REST API for platform embedding
Barrier to entry
09 / 09Traditional QS
Requires hiring or outsourcing
Kwave AI
Free to start, no QS degree needed
Early users
Trusted by UK construction professionals.
From independent QS practices to regional contractors, here's what they're saying.
"I used to spend two full days on a BOQ for a mid-size extension. With Kwave I have a working estimate in under 20 minutes. The regional pricing is actually accurate, that surprised me."
"As a small contractor I couldn't justify hiring a QS for every job. Kwave changed that. I uploaded a job spec and had a proper estimate with a confidence score before lunch."
"The chat interface is deceptively powerful. I can iterate on an estimate in real time during a client call. That's genuinely changed how I present to developers."
"We replaced a £2,400 outsourced estimate with a Kwave run that took twenty minutes. Margin protected, deadline met."
"The export is clean enough to send straight to a developer. I'd been wanting this tool for a decade."
"I used to spend two full days on a BOQ for a mid-size extension. With Kwave I have a working estimate in under 20 minutes. The regional pricing is actually accurate, that surprised me."
"As a small contractor I couldn't justify hiring a QS for every job. Kwave changed that. I uploaded a job spec and had a proper estimate with a confidence score before lunch."
"The chat interface is deceptively powerful. I can iterate on an estimate in real time during a client call. That's genuinely changed how I present to developers."
"We replaced a £2,400 outsourced estimate with a Kwave run that took twenty minutes. Margin protected, deadline met."
"The export is clean enough to send straight to a developer. I'd been wanting this tool for a decade."
FAQs
