Sum the scope.
Each band adds the components relevant to the tool: materials, labor, gates or downspouts, preparation, removal, base work, drainage and other disclosed allowances.
01 How the number gets made
Methodology for
the numbers.
Renovation Range is a planning desk: measure the work, expose the assumptions, and keep a contractor’s eventual quote in the right place.
02 The short version
A range is a
scope tool.
The cost calculators combine material, labor and visible extras into low, expected and high bands. A location factor and the selected currency profile are applied after the underlying USD model is calculated.
The quantity calculators use the dimensions you provide, then show a practical allowance, product coverage or reference density. The formula is kept close to the result so you can challenge an assumption instead of trusting a single unexplained number.
Every public benchmark is marked with a version and observation date. The current model is a reference model, not a live price feed and not a contractor quote.
03 The working parts
Show the
work.
Start with volume.
Rectangular volume is length × width × depth. Concrete columns use π × radius² × depth. Paint uses area × coats ÷ reference coverage. Waste is applied after the base quantity.
Convert openly.
US uses USD and US customary units. Europe uses EUR and metric units. Australia uses AUD and metric units. These are region or country reference profiles, not city-level bids.
04 Examples you can check
Simple math.
Visible limits.
Concrete / rectangle
length × width × depth ÷ 27 = cubic yardsA 12 × 12 ft slab at 4 in is about 1.8 yd³ before waste. With a 10% allowance, plan for about 2.0 yd³. The supplier’s mix and order guidance still wins.
Gravel or mulch
area × depth = base volumeDepth is converted into the selected unit system, then the allowance is added. Gravel’s reference density is a check against tons or tonnes; it is not a promise about moisture or delivery weight.
Installed cost
(materials + labor + extras) × location factorLow, expected and high rates remain separate. Taxes, permits, code, access, disposal and local availability can change a written quote after the site visit.
BoundaryUseful before
Useful before
the quote.
The calculators do not establish property lines, permit requirements, code compliance or final quantities. Use them to define the conversation and compare like-for-like written scopes.