Traceable quantities
Sixty-four governed formulas, each with its inputs and result recorded per run. You can see what a quantity was computed from and change the inputs, not just the answer.
Modern GBQGrace Estimation MethodFor estimators, architects and project managers
Work on your client's project without rebuilding their numbers
You are invited onto a project with a defined role, and you work on the same estimate everyone else sees — with the working shown on every line, so your judgement goes into the parts that need it, not into re-keying a take-off.
Already have an account? Log in. The Platform Overview explains the estimation method in detail.
Why professionals use it
The working, shown
Priced lines with provenance
Each line names its price source — a supplier's published offer, a dated market price with its link, or an indicative rate — so you know which numbers to challenge.
Your quantities, your overrides
Enter the quantities the formulas do not measure, override a selection with a reason, re-price. Hand-entered quantities win over formula results for the same item.
Drawings and planning, assisted
The AI proposes measurements from an uploaded drawing and an indicative planning check for the address, with sources. You confirm; nothing is calculated from a guess.
How it works
What you actually do
- 1
Get invited
The project owner adds you with a role — estimator, architect, project manager or administrator — which decides what you can change.
- 2
See the working
Every quantity names the formula that produced it, and every price names its source. Nothing is a black box you have to take on trust.
- 3
Refine it
Override any material selection with a reason, enter the quantities the formulas do not measure, and re-price. Every version is kept.
- 4
Hand it on
Mark the quote ready, the owner approves it, and the same scope goes to verified builders. Their responses come back against the lines you refined.
Questions
What professionals ask
Do I need a plan of my own?
No. Your account is free. Limits belong to the organisation that owns the project you are working on.
Can I run my own projects?
Yes. Create an organisation and you have the same workspace a developer does, on the homeowner plans. Most professionals simply work on their clients' projects.
What method is behind the numbers?
The Grace Estimation Method: sixty-four governed formulas in five families, versioned and published through the Configuration Centre, with every run's inputs and outputs recorded. The Platform Overview describes it.
Can I export?
Every priced version is kept and shared with everyone on the project. A downloadable costing report with product names, descriptions and photos per line is on the roadmap for shortly after launch.
Worth knowing first
The honest limits
Better to read these now than to discover them after signing up.
- You see only the projects you have been invited to. There is no directory of other people's work.
- What you can change is decided by the role the project owner gave you.
- The AI proposes; it never runs a calculation on its own. A person confirms every input it suggests.
Start
Create your free account
Then ask your client to add you to their project with a role.
Not you?
Modern GBQ for other people
homeowners and developers
Know what your build should cost, before you talk to anyone
builders
Priced scopes from homeowners who already know their budget
suppliers
Be the price behind every quote in your market