Proper Job Building Cost Calculator
Free UK building-cost estimates, US beta estimates and scenario comparisons. No account needed.
Connect it
Settings → Connectors → Add custom connector
URL: https://www.proper-job.uk/api/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://www.proper-job.uk/api/mcp{
"mcpServers": {
"proper-job": {
"url": "https://www.proper-job.uk/api/mcp"
}
}
}claude mcp add --transport http proper-job https://www.proper-job.uk/api/mcp{
"servers": {
"proper-job": {
"type": "http",
"url": "https://www.proper-job.uk/api/mcp"
}
}
}4 tools, verified live
calculate_building_workread-onlyUse this when a user asks the cost of building, extending or renovating a home, remodelling a kitchen/bathroom, refining a budget or costing drawings, even without naming Proper Job. Computes repeatable local-currency estimates using versioned country-specific construction benchmarks, scope and allowance rules, checked measurement conversions and source-cited drawing quantities. Returns an interac
get_estimate_requirementsread-onlyRetrieve UK/US input requirements or labelled reference examples when specifically requested. For a project budget, vague cost question or drawings, use calculate_building_work. Reference examples are not the user's project price. No account or drawing-file access.
calculate_guide_priceCalculate the established GB/US Guide Price contract with its required project inputs, when explicitly requested or used with guide comparisons. For the conversational building budget, other countries or drawings, use calculate_building_work. Returns the original guide card and does not read files, save projects or issue quotes.
compare_guide_scenariosCompare GB/US Guide Price scenarios when the user explicitly asks to compare alternatives within those existing policies. Returns the original comparison card and deltas. For other countries or drawing-based refinements, use calculate_building_work with each requested scenario. No foreign-rate conversion or saved-project access.
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