Homeowner resource
Home project cost glossary
Contractor estimates and home improvement guides use a lot of practical pricing language. This glossary explains common terms so you can compare calculators, guides, and quotes with more confidence.
Use this with the calculators
Start with a cost calculator, read the matching planning guide, then use these terms when reviewing written contractor quotes.
Estimate and quote terms
- Estimate
- An expected price range or preliminary total based on known project details. An estimate is useful for planning, but it may change when the final scope, site conditions, and material choices are confirmed.
- Quote
- A more specific price from a contractor or supplier. A quote should list scope, materials, labor, exclusions, timing, payment terms, and how changes are handled.
- Scope of work
- The exact work included in a project. A strong scope names the rooms, surfaces, systems, demolition, prep, installation, cleanup, and warranty responsibilities.
- Allowance
- A budget placeholder for a selection that has not been finalized, such as tile, fixtures, cabinets, flooring, or lighting. If the final choice costs more than the allowance, the project total usually increases.
Budget and pricing terms
- Contingency
- Extra money reserved for hidden repairs, scope changes, code updates, or price differences. Many homeowners set aside 10 to 20 percent for remodeling projects with unknown conditions.
- Labor
- The cost of skilled work, project management, setup, cleanup, and trade time. Labor can vary widely by region, contractor availability, project complexity, and schedule.
- Materials
- Products used in the project, such as lumber, tile, fixtures, paint, concrete, windows, siding, shingles, equipment, fasteners, and trim.
- Unit cost
- A price tied to a measurement, such as cost per square foot, linear foot, window, fixture, room, or system. Unit costs make early estimates easier but still need real scope details.
Contractor and project terms
- Change order
- A written approval for extra work, changed materials, hidden repairs, or scope changes after the original quote. Change orders should describe the cost and schedule impact before work continues.
- Permit
- Local approval required for certain work, often involving inspections. Electrical, plumbing, structural, roofing, HVAC, additions, and major remodels may require permits depending on location.
- Inspection
- A review by a local authority, utility, or sometimes a third-party professional to confirm work meets required standards before the project moves forward or closes out.
- Workmanship warranty
- The contractor's promise about installation quality. It is separate from manufacturer warranties on materials or equipment.
Site condition terms
- Subfloor
- The structural layer below finished flooring. Damage, unevenness, moisture, or rot can add prep costs before new flooring or tile is installed.
- Sheathing
- Panel material under roofing or siding. Rotten or damaged sheathing may need replacement before new shingles or siding can be installed.
- Rough-in
- Early-stage plumbing, electrical, HVAC, or framing work installed before walls or finishes are closed. Rough-in changes can affect cost because they happen behind finished surfaces.
- Access
- How easily workers, tools, equipment, and materials can reach the project area. Tight access, stairs, steep roofs, long carries, and occupied spaces can increase labor.