How do you do a landscape quantity takeoff from drawings?

What is a landscape quantity takeoff?

A landscape quantity takeoff is the measured list of every item in a landscape scope, read off the drawings to scale. It records how much of each thing the job needs: square metres of turf and garden bed, lineal metres of edging and subsoil drain, counts of trees and shrubs, and cubic metres of topsoil and mulch.

The takeoff is the input to a price, not the price itself. Every rate you apply later multiplies a quantity from the takeoff, so a missed area or a wrong scale carries straight through to the tender total. That is why the measuring deserves more care than any other part of the estimate.

What are the steps in a landscape takeoff?

A reliable takeoff follows the same order every time. The order matters because each step protects the next: you cannot measure accurately off the wrong revision, and you cannot reconcile what you never listed.

1. Collect the full set. Gather the landscape plans, planting plans and planting schedule, construction details, the specification, and any civil or architectural drawings that define levels, drainage or the edge of your scope.
2. Check scale and revision. Confirm every sheet is the current revision, note its stated scale, and check that scale against a known dimension before you measure anything.
3. Set up a measurement list by trade. List the items you expect to measure, grouped by trade such as site preparation, softscape, hardscape, drainage, irrigation and structures, each with its unit.
4. Measure areas, lengths, counts and volumes. Work sheet by sheet and trade by trade, marking each item on the drawing as you measure it so nothing is counted twice.
5. Reconcile against the planting schedule. Compare your plant counts, species and pot sizes with the schedule and note every difference.
6. Cross-check the specification and details. Confirm soil and mulch depths, edging types, paving build-ups and subgrade preparation against the spec and detail drawings, and convert areas to volumes where the item is priced by volume.
7. Record assumptions and exclusions. Write down every judgement you made, every item you left out and every question for the head contractor.
8. Run a QA check. Check totals against a rough overall site area, look for items with no quantity, and have someone else review the marked-up drawings where possible.

How do you read landscape architect drawings for a takeoff?

Reading landscape drawings means learning where the information lives, because it is rarely all on one sheet. The plan shows where things go, the legend explains what each symbol and hatch means, the schedules give species and sizes, and the details show how each item is built.

Legends are the key to every plan. Read the legend before you measure, and check that every symbol and hatch on the plan appears in it. A hatch that is not in the legend is a question for the head contractor, not something to guess.

Hatches mark areas of a single treatment, such as turf, mass planting, mulched bed, gravel or unit paving. Two similar hatches can mean very different build-ups, so measure each hatch as its own item and keep them separate until the spec tells you they are priced the same way.

Planting schedules list each species with its code, pot or container size, spacing or density, and often a total quantity. The codes on the planting plan link back to the schedule, so every code you count should appear there, and every species in the schedule should appear on a plan.

Detail callouts are the references on a plan, usually a detail number and sheet number, that point to a construction detail. The detail is where the cost sits: bed depths, edging profiles, root barrier, subsoil drains and paving bases. Follow every callout at least once, and read how the scope boundaries are described in the tender scope.

How do you measure each type of landscape item?

Every item in a landscape takeoff is measured in one of four ways, and choosing the right one is part of the method. Match the unit to how the item is bought and built, and to how the head contractor's pricing schedule asks for it if one has been issued.

• Areas (m²) for turf, garden beds, paving, gravel, weed mat, subgrade preparation and anything else laid over a surface.
• Lengths (lm) for edging, kerbs, fencing, subsoil drains, irrigation mainline and root barrier.
• Counts (no.) for trees, shrubs and groundcovers by pot size, pits, bins, seats, bollards and tree grates.
• Volumes (m³) for topsoil, mulch, excavation, imported fill and disposal.

Volumes usually come from an area and a depth: area x depth = volume, with the depth taken from the specification or detail, not assumed. Keep units consistent, since depths are often shown in millimetres and must be converted to metres before you multiply. The topsoil, mulch and turf quantities guide works through these conversions in detail.

Some items need a factor on top of the measured quantity. Topsoil compacts once placed, excavated material bulks up when dug, and turf and pavers lose some quantity to cutting and wastage. These factors are real, but they vary by material and site, so take them from the specification, your supplier or your own job records, and show them as a separate line so the net measured quantity stays visible.

Should you do a takeoff on paper or with digital software?

A paper takeoff is measured from printed drawings with a scale ruler and a highlighter. A digital takeoff is measured on screen from the PDF or CAD files, with the software recording every measurement against the drawing. Both work if the method is sound, but they fail in different ways.

The biggest paper risk is scale: a sheet printed smaller than its intended size gives wrong quantities on every measurement. The biggest digital risk is trusting the tool: an uncalibrated sheet or a snapped line in the wrong place is just as wrong, only faster. Whichever you use, calibrate each sheet and check one known dimension before you start.

How does the takeoff feed the bill of quantities?

The takeoff feeds the bill of quantities by supplying the measured quantity for every line. A bill of quantities is the itemised schedule of the work, with a description, unit and quantity on each line, ready for a rate to be applied. The takeoff is the working behind those numbers.

Structure the takeoff so it drops straight into the BOQ. If the head contractor has issued a pricing schedule, measure to its items and units, so you are not rearranging quantities on the deadline. If there is no schedule, group items by trade in the order the work is built, and write descriptions that name the specification clause or detail they come from.

Keep the link between each BOQ line and its measurement. When a query comes back after submission, you should be able to point to the exact area on the drawing that produced the number. Most of the common landscape takeoff mistakes are easy to find when that link exists and hard to find when it does not.

What should you hand to the pricing stage?

A takeoff is finished when someone else could price it without asking you a question. Whoever applies rates needs to know what was measured, from which drawings, and on what assumptions.

• The itemised quantities, grouped by trade or by the head contractor's schedule, each with a description and unit.
• The marked-up drawings, showing what was measured on each sheet.
• A drawing register listing every sheet and revision the takeoff was measured from.
• Assumptions, such as depths taken from a typical detail or a boundary taken as the property line.
• Exclusions, listing items shown on the drawings but not in your scope.
• Open queries for the head contractor, especially where the plan and schedule disagree.

Assumptions and exclusions matter as much as the quantities. They become the qualifications in your tender, and they are what protect you if the scope turns out to be larger than drawn. If you would rather hand the measuring off entirely, a quantity takeoff service can return the itemised quantities ready for your own rates.

Frequently asked questions

What is a landscape quantity takeoff?

A landscape quantity takeoff is the measured list of every item in a landscape scope, read off the drawings to scale: areas, lengths, counts and volumes. It is the input to a price, not the price, so every rate you apply later multiplies it.

What drawings do you need for a landscape takeoff?

You need the landscape plans, planting plans and planting schedule, construction details and the specification. Civil and architectural drawings matter wherever they define levels, drainage, slab edges or the boundary between your scope and someone else's.

Should you count plants from the plan or the planting schedule?

Count from the plan, then check against the schedule. Schedule totals can be out of date or wrong. Where your count and the schedule disagree, note the difference, decide which one you are pricing, and raise it as a tender query.

Is digital takeoff software better than measuring on paper?

Digital takeoff is usually faster and easier to check, because every measurement stays marked up on the drawing. Paper still works for small jobs. The method matters more than the tool: calibrate the scale, measure by trade and record assumptions.

What is the difference between a takeoff and a bill of quantities?

A takeoff is the raw measurement of the work, with working notes and marked-up drawings. A bill of quantities is the itemised schedule built from those measurements, with descriptions and units ready to be priced line by line.

Key takeaways

• A takeoff is the measured quantity of every scope item, and every rate you apply multiplies it.
• Start with the full, current drawing set and check the scale of every sheet before measuring.
• Measure by trade, as areas, lengths, counts or volumes, marking each item as you go.
• Reconcile plant counts against the planting schedule and depths against the specification.
• Take compaction, bulking and wastage factors from the spec, supplier or your own records, never a guess.
• Hand over quantities, marked-up drawings, assumptions, exclusions and open queries together.