European Central Bank — euro reference rates
Used for the dated EUR conversion recorded in the manifest.
Open source ↗01 What the manifest remembers
See the references
behind the ranges.
The data layer is intentionally small and dated. It tells you what kind of evidence a number represents, where a market profile came from and when it was observed.
02 Read the record
Dates are
part of data.
The calculators read the versioned manifest in site/benchmarks.js. The current record is market-v0.3, has status: reference, confidence: reference and observedAt: 2026-08-27.
The shared model calculates in USD and US customary units, then uses the selected market profile for currency, formatting and units. EUR and AUD conversions are versioned reference multipliers, not a live foreign-exchange feed. If a multiplier changes, the manifest and its observation date should change with it.
The US national and state factors are marked provisional or unverified in the manifest where they need further refresh. Europe and Australia are regional/country reference profiles; they are not presented as exact city, state or contractor pricing.
03 Published reference points
Follow the
trail.
BestBuilders — UK fencing cost guide
A European reference point for the fence profile; it is not a quote for every European market.
Open source ↗ServiceSeeking — fence installation guide
An Australian market reference recorded for the fence profile.
Open source ↗Going Rate — guttering cost guide
An Australian reference point for gutter installation ranges.
Open source ↗ConConnect — concrete driveway guide
An Australian reference point for driveway and concrete scope.
Open source ↗04 The three profiles
Same model.
Clearer units.
| Profile | Currency | Length | Area | Volume |
|---|---|---|---|---|
| United States | USD | ft | sq ft | yd³ |
| Europe | EUR | m | m² | m³ |
| Australia | AUD | m | m² | m³ |
Use the source list with the toolsPick a project.
Pick a project.
Check the scope.
Start with a calculator, then use the methodology and source record to ask which parts of the result need a local quote or site check.