For homeowners with a builder’s quote in hand

Is the quote fair? Find out before you sign.

Upload the quote. In about three minutes you get a free Quick Check: what it covers, what it leaves out, and three questions to put to the builder — each one pointing at the words in the quote that raised it. Then, if you want the whole picture, the Deep Analysis reads every quote for the job side by side: £79, once, for the project.

Check my quote — free

A PDF, a Word or Excel file, or a photo of the quote. No card for the Quick Check. Your documents stay yours.

Three things you get that a friend who “knows a builder” can’t give you
01

Every cost, not just the total

Building control, the party wall, the surveys, the finishes, the provisional sums that move — the costs that are not in the quote are the ones that hurt. We add them to your number before they add themselves.

02

Independent

No referral fees, no commissions, no builders paying to be listed or ranked. Omnisum is paid by you, never by the people quoting you — and every flag is a question a good builder answers happily.

03

Private

Your quote goes into your own account and nowhere else. It is never used to train AI, never shown to another builder, and deleted with your account whenever you say.

What you get

Free first. Then £79, once, if you want the whole picture.

The Quick Check — free

  • What the quote covers, and what it is silent on
  • Three findings, each phrased as a question for the builder, each with the line that prompted it
  • How much of the price is soft — provisional sums and allowances, in pounds
  • Which of the ten questions every homeowner should ask are already answered

The Deep Analysis — £79 for the project

  • Every quote for the job read line by line and levelled like for like, so the cheapest on paper stops hiding
  • The builders’ public records, the permissions for your address, the likely final cost
  • The ten questions for every builder, and a message to each in your own words
  • Add the other quotes as they arrive, and the contract before you sign — the same £79 covers the project
The price
£79

once, per project, including VAT — every quote you add, now or later

Start with the free check

Paid on Stripe’s page; we never see the card. Fourteen days to change your mind until the report is delivered.

How it works
1

Your email, then the quote

We send a six-digit code; no password. Drop in the quote — a PDF, a Word or Excel file, or photos of the pages.

2

The Quick Check, in about three minutes

It reads the document, not a form: the findings point at the lines that raised them.

3

Then, if you want, the whole picture

Nineteen questions about the job, and the Deep Analysis reads every quote against your answers.