De facto standardPaywalled
MasterFormat and UniFormat
Construction Specifications Institute and Construction Specifications Canada
work results classification for cost codingelemental classification for early estimatesschedule of values structure on building work
Included because schedule of values and cost code structure on Californian building work follows CSI conventions while civil work follows the agency bid item list. Systems that assume one coding spine will mis-handle half the state's work, which is the practical reason this is recorded as an authority rather than assumed.
De facto standardFree to read17R-97
AACE International
estimate classificationexpected accuracy rangematurity of definition
De facto standardFree to read56R-08
AACE International
estimate classification (building construction)accuracy ranges
Building-specific accuracy ranges and the deliverable maturity matrix that determines which class an estimate actually qualifies as.
Common practicePaywalledE2516
ASTM International
estimate classification
Common practicePaywalled
ENR Construction Cost Index and Building Cost Index
Engineering News-Record (BNP Media)
building cost and construction cost index seriescity-level cost indices including San Francisco and Los Angelesmaterial and labour cost trend reporting
Sits behind the Californian escalation index rather than being used directly. Recorded so the derivation chain is visible: an estimator quoting CCCI is ultimately quoting a two-city ENR building cost average, which is a real limitation when the project is neither in the Bay Area nor in Southern California.
Common practicePaywalled
Recommended Practice on Cost Estimate Classification (including the construction-specific practice)
AACE International
estimate classification by design maturityexpected accuracy rangesestimating methodology by classcontingency expectation by class