Estimator reference library
Use these references to define the purchase unit, gross quantity, comparison specification, price-carrying method, and ordering checks before a local supplier value enters an estimate.
The nationwide collection queue contains 33,791 Census ZCTAs. That queue is planning infrastructure, not populated coverage, and it does not generate empty ZIP pages.
Download the machine-readable exact-material references (JSON). This authored reference file contains specifications, comparison rules, estimating methods, and governed citations—no prices, locations, suppliers, or observations.
Each page answers a practical estimating question: what exactly is being counted or measured, what is the purchase basis, which products are not equivalent, how should cost be carried, and what must be checked before ordering?
A common framing input whose shelf price can move quickly and whose grade, species, moisture condition, and treatment materially affect comparability.
Purchase basis: 8 linear ft of this exact member per piece; do not treat linear footage alone as a complete framing count
This provides a second dimensional-lumber signal while retaining a strict specification instead of treating every nominal 2 x 6 as interchangeable.
Purchase basis: 8 linear ft of this exact member per piece; member count still depends on the reviewed framing layout
Panel prices are useful only when thickness, dimensions, edge profile, rating, and package quantity remain explicit.
Purchase basis: 32 gross square ft per sheet before layout, cuts, openings, edge support, damage, and waste
A common interior material with meaningful differences between regular and specialty panels and between carry-out and delivered pricing.
Purchase basis: 32 gross square ft per sheet before layout, cuts, openings, breakage, and waste
Bag price alone is not yield; a useful observation preserves package weight and product class so quantity calculations can use the selected manufacturer's current yield.
Purchase basis: one manufacturer-labeled 80 lb package; volumetric yield is product-specific and must come from the current product data
PEX type, barrier, size, color, length, and listing matter; a generic per-foot figure can hide a non-equivalent product.
Purchase basis: 100 linear ft of this exact tubing per coil before routing, tails, connections, damaged ends, and waste
The same nominal size appears in products with different materials, schedules, listings, and uses, so those attributes must stay attached to the observation.
Purchase basis: 10 linear ft of this exact pipe per length before cuts, socket engagement, damaged ends, and waste
Copper is volatile and frequently contract-priced, making timestamp, source, price class, and exact tube type especially important.
Purchase basis: 10 linear ft of Type L straight tube per length before cuts, fitting take-up, damaged ends, and waste
Cable is metal-sensitive, but a trustworthy comparison must preserve wiring method, conductor material, gauge, conductor count, ground, and coil length.
Purchase basis: 250 linear ft of this exact cable per coil before routing, vertical travel, tails, slack, damaged ends, and waste
A second exact cable specification helps show metal-price movement without collapsing different gauges or wiring methods into one number.
Purchase basis: 250 linear ft of this exact cable per coil before routing, vertical travel, tails, slack, damaged ends, and waste
Raceway comparisons fail when trade size, type, finish, length, or included couplings are omitted.
Purchase basis: 10 linear ft of this exact raceway per length before bends, cuts, damaged ends, and waste
Device prices are only comparable when function, rating, grade, color, listing, and pack count remain visible.
Purchase basis: one device; box, cover plate, protection, connectors, conductors, and labor are not included
A glass area is not a comparable cost until thickness, heat treatment, make-up, coating, fabrication, cut size, yield, and minimum-charge basis remain attached.
Purchase basis: reviewed net pane area before stock-sheet yield, cutting waste, breakage, minimum charges, fabrication, edgework, handling, and delivery
Keep grade, size, material, type, listing, package quantity, and other comparison fields visible. Do not hide a substitution inside an average.
Start from reviewed drawing quantities, then apply project-specific waste, yield, laps, cuts, openings, minimums, and ordering rules explicitly.
Preserve source, branch or market, exact SKU, date, price class, basis, availability, tax, delivery, account requirements, and quote validity.
Use the source price on the same purchase basis, round only where ordering requires it, and keep exclusions and project assumptions attached to the estimate.
Keep the drawing reference, measured quantity, formula, waste, unit cost, and assumptions together before export.
Open the free quantity takeoff sheetCarry reviewed quantities, assemblies, manual cost inputs, scope, and estimate outputs together without claiming automatic procurement or live supplier pricing.
See the material takeoff workflow