Find the right starting point
Concrete
A concrete package is a system of excavation, forms, reinforcement, placement, finishing, and curing. A volume alone cannot describe it.
Read the guide 31 / TRADESitework & earthwork
The same building can sit on very different ground. Sitework estimates need surfaces, geotechnical information, and a clear plan for moving material.
Read the guide 04 / TRADEMasonry
Wall area is the starting point. Unit type, reinforcement, grout, openings, and access determine the masonry package behind it.
Read the guide 06 / TRADEFraming & lumber
A lumber list should describe the structural and architectural assembly—not just the linear footage that appears on a floor plan.
Read the guide 09 / TRADEDrywall & interiors
The same wall length can represent different heights, layers, ratings, and finishes. A useful takeoff keeps those assemblies separate.
Read the guide 07 / TRADERoofing
The roof covering is only part of the roof. Insulation, transitions, drainage, access, and existing conditions need a place in the estimate.
Read the guide 26 / TRADEElectrical
An electrical estimate should cover the complete distribution system — not just the panel and fixture count visible in an architectural plan.
Read the guide 22 / TRADEPlumbing
A plumbing estimate should describe the complete sanitary, domestic, and specialty system — not just the fixture count.
Read the guide 23 / TRADEHVAC & mechanical
In Arizona's climate, HVAC is often one of the largest mechanical line items. A useful estimate separates equipment, distribution, controls, and installation conditions.
Read the guideA trade name is the start of a scope conversation
The same trade can be packaged differently by each contractor. Concrete may include excavation or receive a prepared subgrade. Roofing may include equipment handling or exclude it. Drywall may include insulation, framing, and finishing—or only part of the assembly.
Define supply and installation responsibilities before collecting quotations. A scope matrix makes the interfaces visible and gives the general contractor a way to identify gaps and overlaps.
Measure in the units that support pricing
Volumes, areas, lengths, counts, weights, and labor hours describe different work. A complete trade estimate often needs several of them. Keep each quantity's source and unit visible, then confirm whether the pricing includes accessories, waste, equipment, and indirect work.
The quantity takeoff guide explains traceability. For combined building systems, see MEP estimating. Additional trade pages will be added only when their content and the business's capability have been verified.