Every question about a drawing pack, on one list
For energy assessors, and for window, door and joinery makers. We measure your drawings and compare them with the schedules, your order and the last revision. You get one list of everything that disagrees or is missing, with the sheet and the spot for each, for your own qualified person to decide on.
From £300 a month.Depends on how many packs you send.
We agree the monthly price and what a useful list looks like before you send a drawing.
Start with one drawing pack
Tell us what you do and roughly how much drawing work comes in. We’ll reply to agree the first pack and the monthly price before you send any drawings.
What it found on one house type
We ran one new house type’s drawing pack through it, with the assessor’s own figures held back. 10 of the 11 window and door measurements came within 5 cm of the assessor’s.
It also found that one elevation, labelled 1:100, was drawn at about 1:160. That is one house so far. We haven’t yet measured how often it misses a real difference, or raises one that isn’t there.
How it works
Send the drawing pack as PDFs, the way it reaches you now.
The scale of every sheet is checked before anything is measured.
Walls, floors, roofs, windows and doors are measured from the lines stored in the PDF, not guessed from the picture.
The drawings are compared with the schedules, the specification, your order and the last revision.
Every figure shows its sheet and how it was worked out, and is marked measured, calculated, assumed or ‘please confirm’.
You get one list. Each item shows both places it was found, side by side, with the sheet, the revision and a box around the spot.
What comes back depends on your work
Energy assessors
For firms doing new-build SAP for housebuilders, developers and architects.
- The measurements for your energy calculation, in the order your software asks for them.
- The Part O overheating workings by the simplified method, and the solar roof workings for the rules from 24 March 2027.
- The ventilator schedule, junction lengths, and a water calculation draft where the fittings are in the pack.
- One list of questions for the architect, written as an email.
Window, door and joinery makers
For makers who price and order from an architect’s drawings and schedules.
- Your order or fabrication schedule set against the architect’s latest drawings and schedules.
- Every line where they disagree, such as a size, a count, a handing or an opening that moved, with both sources side by side.
- On each new revision, what changed that touches your items.
- So you can put it right before anything goes to the factory.
Your qualified person decides and signs
You get a list of questions and differences, not a verdict. Your assessor, estimator or contracts manager decides what to do with each item and signs everything. We prepare; we don’t certify.
A sheet with no queries is not a pass. Every list says what it didn’t look at.
What we need from you
- One drawing pack as PDFs. For assessors, the next house type you’re pricing or re-running. For makers, one finished job where something had to be remade, with the drawings at each revision and the order you placed.
- What your own team found on that pack, so you can compare.
- Which software you enter the figures into, or order through.
Start with one pack
Assessors: send the next house type pack, or up to five you’re re-running for March 2027. We agree when it comes back before you send it. You get the workings and the query list, to set against what your own assessor found.
Makers: send one finished job where something had to be remade, with the drawings and schedules at each revision and the order you placed. We agree when it comes back before you send it. You get every line where they disagree, and can see whether it found the one that cost you.
Pricing
Before you send a drawing, we agree the monthly price and what a useful list looks like, in writing.
From £300 a month.
The price depends on how many house types or jobs you send each month, and each level covers an agreed number. We confirm which one fits you before you decide.
For assessors, the figures come back as a spreadsheet in the order your software asks for them.
What it doesn’t look at
Whether a design meets the building regulations. We prepare workings for your assessor; we never say a design passes.
Fire safety, structure, or anything for building control approval.
Buildability, or anything that isn’t on the drawings.
So far it has been tested on one new house type. Flats, commercial buildings, scanned sheets and DWG files haven’t been tested yet.
Questions about drawing query lists
Does it load straight into our SAP software?
Not yet. Your figures come as a spreadsheet in the order your software asks for them. Loading them straight in needs the software maker’s agreement, which we don’t have.
Does it tell us whether a home passes Part O?
No. You get the workings by the simplified method: glazing and floor areas by elevation and room, which way each side faces, opening areas where the drawings show them, and the result against the tables. Your assessor decides whether it passes, and signs.
How accurate is it?
On the one new house type we have tested, 10 of 11 window and door measurements came within 5 cm of the assessor’s own. We haven’t yet measured how often it misses a real difference or raises a false one, which is why your own person decides on every item.
Which drawings can it read?
PDF drawing packs for new houses, so far. It checks each sheet’s scale before measuring. Flats, commercial buildings, scanned or hand-marked sheets and DWG files haven’t been tested yet.
Does a short list mean the drawings are right?
No. The list covers what it looked at and says what it didn’t. A sheet with no queries is not a pass, and what was never drawn can’t be on the list.
What does it cost?
From £300 a month, depending on how many house types or jobs you send. We agree it in writing before you send anything.
Where do our drawings go?
Once it’s set up, it runs on your own server or in your own cloud account, in the UK, and your drawings are kept there. For the first pack you send the drawings to us. Before you do, we agree in writing how we keep them, who can see them and when we delete them.