How to Price a Construction Job in NZ — Takeoff, Rates, Margin and Exclusions (2026 Guide)

Steve Parker
Jun 10
7 min read

Updated: 5 days ago

Most NZ trades lose tenders they should have won and win jobs they should have priced higher --- same root cause: the pricing process skipped a step. Here is the full sequence --- takeoff, rates, labour, overheads, margin, exclusions, validity --- and where each trade most often loses on it.

By Steve Parker · Trueworks · NZ construction estimation · 6 min

What you'll learn in this post

The six-step pricing sequence from drawings to a defensible tender
Where each trade most often under-prices --- and what it costs
The exclusions and validity lines that stop a thin quote becoming a loss-making contract

Quick answer: Pricing a construction job in NZ runs six steps: (1) a quantity takeoff from the current drawing revision --- measure everything, assume nothing; (2) material costs at today's supplier pricing, with wastage factors per trade; (3) labour built from crew rates and productivity, not a single blended guess; (4) overheads allocated per job --- vehicles, insurance, tools, admin time; (5) margin applied as markup on total cost, calculated, not vibes; (6) a written scope with exclusions and a validity period so the price stays attached to the documents it was built from. Industry guidance expects estimates within 10-15% of final cost when the information is adequate --- the spread between winning and losing tenders is usually in the takeoff and the exclusions, not the margin.

How to price a job in construction --- the 60-second version

Takeoff from a named drawing revision --- measure every quantity off the current drawings and write the revision on the quote (Step 1 below).
Materials at current supplier rates --- this month's pricing, plus trade wastage factors (Step 2 below).
Labour from productivity --- crew composition and task productivity constants, not one blended hourly guess (Step 3 below).
Subcontract plus P&G --- subcontractor pricing against their own named scopes, and preliminary and general overheads allocated to the job (Step 4 below).
The margin decision --- markup derived from annual costs and profit goal, applied consistently, defended in writing (Step 5 below).
Exclusions in writing --- scope inclusions, written exclusions, validity period, and code references on the quote itself (Step 6 below).

Step 1 --- the takeoff: measure off the current revision

Every defensible price starts with a quantity takeoff: working through the drawings and measuring every material the job needs --- lineal metres of framing, square metres of cladding and roofing, block counts by course, cable runs by circuit, fixture counts by room.

Two rules carry most of the risk:

Name the revision. Price off drawing revision C and write "priced to revision C" on the quote. When revision D lands with a different reinforcement schedule or an extra bathroom, the change is a variation --- not your absorbed cost.
Measure, never infer. "Roughly 40 m² of deck" off a conversation is how a 56 m² deck gets built at a 40 m² price. If the drawings are incomplete, price what is drawn and exclude what is not.

A full takeoff on a residential job takes a competent estimator hours, not minutes. That time is the price of every later argument you do not have.

Step 2 --- materials at today's prices, plus wastage

Multiply quantities by current supplier pricing --- current meaning this month, not the rates from the last job. Steel, timber, and metal-roof pricing have all moved double-digit percentages inside single years recently.

Apply trade wastage factors: framing timber typically 7-10%, sheet linings 10-15% on cut-up layouts, brick and block 5%, tiles 10% plus breakage. A quote with zero wastage is structurally under-priced before labour is even considered.

Flag long-lead items separately --- engineered joists, specialist joinery, switchboards --- because their price volatility and lead time both belong in the programme conversation, not buried in a lump sum.

Step 3 --- labour from productivity, not a blended guess

Build labour from who does the work and how long it actually takes: crew composition (lead hand, qualified, apprentice), their charge-out or cost rates, and productivity constants for the task --- m² of cladding hung per day, blocks laid per day at that wall height, points wired per day on that layout.

The common failure is one blended hourly rate multiplied by an optimistic total. It hides the difference between a straight run and the fiddly heritage junction that takes a day to flash. Site factors --- slope, access, working height, occupied premises --- are labour multipliers and should be priced from a site visit, not a plan view. NZ guidance is blunt on this: never price purely off a plan or a conversation when a walk-through is possible.

Step 4 --- overheads, allocated per job

Vehicles, fuel, insurances, tool replacement, phone, software, the unpaid hours quoting and invoicing --- these exist whether or not any single job does. Total them annually, divide across realistic billable capacity, and load every job with its share. Trades that skip this step subsidise every job from their own wages and find out at tax time.

Step 5 --- margin: calculate it, then defend it

Markup is arithmetic, not a feeling. The business.govt.nz formulation: take everything your jobs must recover across a year --- direct costs, business running costs, and your profit goal --- and derive the markup percentage that gets there on your realistic volume. Then apply it consistently.

Two practices protect it: never discount the margin to win work without writing down what was removed from scope to fund it; and review the percentage quarterly against actuals --- if every job lands under, the takeoffs are thin, not the market generous.

Step 6 --- the written scope, exclusions, and validity

The price is only as defensible as the document it sits in. The quote should carry:

Scope inclusions to drawing revision and detail callout --- what is in, by reference
Written exclusions --- existing-fabric tie-ins, temporary works, engineer-instructed changes, consent-condition costs, anything not drawn
A validity period --- 30, 60, or 90 days, with a re-pricing mechanism after it
The trade-specific code reference --- MRM Code of Practice for roofing, NZS 4229 for blockwork, NZS 3404 / AS/NZS 5131 for structural steel, AS/NZS 3000 for electrical --- so the installation standard you priced is the one you are held to
Tagged provisional sums where the documents do not support a firm figure

On head-contract work under NZS 3910, those lines are what keep a scope gap on the principal's side of the §14 variation mechanism instead of becoming your back-charge.

Where each trade most often loses

Roofer --- cut-in and junction detail priced at per-m² long-run rates; typically $5-15k per job
Blocklayer --- block series / reinforcement drift between consent and engineer's detail; typically 20-30% per m²
Steel fabricator --- temporary propping and out-of-plumb existing fabric not excluded; typically $5-20k per job
Electrician --- switchboard, mains upgrade, and fire-stopping penetrations under-scoped; typically $4-12k per job
Plumber/drainlayer --- pumped vs gravity drainage assumed off the site plan; typically $8-25k per job
Builder (head contract) --- provisional sums priced as firm, contingency thin; the cost is margin × the gap

Every line is a takeoff or exclusions failure, not a rates failure. The market knows the rates; it is the quantities and the boundaries that separate the quotes.

Doing it yourself vs buying the takeoff

Three working models:

Manual / spreadsheet --- viable on small repeatable work; slow and error-prone past a single trade's scope
Takeoff software --- fast measurement once you have learned it and loaded your rates; the quantities are still only as good as the operator and the drawing read
An estimation service --- drawings in, a measured and priced materials-and-labour packet back, with the code citations and exclusions drafted

Trueworks sits in the third lane: send the drawings and the tender documents, get back a takeoff with quantities, current pricing, the risk lines flagged, and the exclusions written --- in days, sized for residential and light-commercial trade work. The pricing decision stays yours; the measurement and the document work is done.

FAQ --- pricing construction jobs in NZ

Q1: How accurate should a construction quote be in NZ? Industry guidance expects estimates within 10-15% of final cost where the information is adequate. A fixed-price quote is a promise, not an estimate --- which is why the scope, exclusions, and revision references matter more on a quote than on an estimate.

Q2: What is the difference between a quote and a tender? Mechanically the same pricing work. Tenders are the formal competitive version on larger jobs, usually against fuller documents and with contract conditions (commonly NZS 3910) attached. The fuller the documents, the more reliable the price --- and the fewer disputes later.

Q3: What markup do NZ trades typically run? There is no single number --- it derives from each business's costs, capacity, and profit goal. The calculation (annual recoverable costs plus profit goal over realistic volume) matters more than the figure; copying another trade's percentage imports their cost structure, not their profit.

Q4: Should I price a job from the plans without visiting the site? No, where a visit is possible. Slope, access, ground conditions, services proximity, and working room are all labour multipliers invisible on a plan. Where you must price unseen, write the assumptions into the quote as conditions.

Q5: What stops a low-priced competitor undercutting a properly built price? Nothing, on price day. But a thin price either becomes variations and disputes on site or a contractor who is not there next year. A documented takeoff, named exclusions, and code citations win the clients who have been burned before --- which on renovation work is most of them.

Get your next tender priced properly

Drawings + the tender documents + 5 business days = a measured takeoff with current pricing, risk lines flagged, and the exclusions drafted, ready to submit.

No charge for your first packet. No commitment. NDA available. Files NZ-hosted, deleted after 30 days unless you ask us to retain them.

→ Get the free check at trueworks.co.nz/contact --- or email hello@trueworks.co.nz

About Trueworks

Trueworks is built by Steve Parker --- 20 years on the analytical side of NZ construction. Variation reviews, contract advisory, programme review, and document-heavy estimation work. Trueworks is the productisation of that practice for builders: same defensible analysis, at a price and pace a NZ builder can actually use.

Every report is checked and signed off by me personally before it goes out. If you have a tender closing and want the takeoff done properly, the easiest way to find out if Trueworks is useful is to send it.

hello@trueworks.co.nz · trueworks.co.nz

Got a quote, tender or variation on your desk? Get it checked --- written, code-cited, back within 24 hours. First check free. Send us the drawings and the quote, tender or variation. You get a written, code-cited check back within 24 hours. No charge for your first check. No card, no obligation. NDA available.→ Get the free check at trueworks.co.nz/contact --- or email hello@trueworks.co.nz