Launch League

Construction & project management · Analyzing & Problem-solving

Construction estimator: what the job actually is

Working out what a building project will cost before it is built, by measuring the drawings and pricing every part of the work.

Published Last reviewed How we research and correct this

Construction estimator: quick facts

Construction estimator salary in Ontario: the median pay is $38.46 an hour, according to Job Bank (reference period 2023-2024). Its three-year outlook in Ontario is moderate. The job usually needs a college diploma, or an apprenticeship of two or more years.

Median pay in Ontario
$38.46 an hour
Pay range (low to high)
$24.00 to $61.54 an hour
Job outlook, 2025-2027
Moderate
People working in it in Ontario
8,150
Usually needs
Usually a college diploma, or an apprenticeship of two or more years

Source: Job Bank wages (updated 19 November 2025) and job prospects (updated 10 December 2025), NOC 22303. Pay varies by region and experience.

The work

What this job actually is

  • Deciding what a construction job will cost before anyone has built it. You read the drawings, measure the quantities, price the materials and labour, and produce a number a contractor can bid.
  • It is a desk job, but it comes from the site. The best estimators know what work actually costs because they have seen it done.
  • You are right or wrong in public. A bid too low wins the job and loses money, and a bid too high loses the job. Nobody tells you which you got right until the building is done.
  • Job Bank reports that most estimators work in the construction industry, and a smaller number work in manufacturing, mainly in fabricated metal product facilities.
  • It is not a regulated occupation in Ontario. Job Bank says certification by the Canadian Institute of Quantity Surveyors is usually required for the group, so there is a professional route, but it is not a licence.

A Tuesday

What a normal day looks like

Not a good day or a bad one. The ordinary version, which is what you would actually be living.

  1. 8:00 — Open the email. A general contractor has sent drawings for a bid due on Friday, and the drawings have a mistake.
  2. 8:30 — Read the drawings and the specifications, marking what you need to price. Most of the cost is hidden in the specifications, not in the drawings.
  3. 10:00 — Take-off: measuring quantities from the drawings. Linear metres of pipe, square metres of drywall, number of doors. Slow, careful, and repetitive.
  4. 12:00 — Lunch at your desk, answering a supplier about a price.
  5. 13:00 — Call three suppliers and two subcontractors for quotes. They give different answers, one of them quietly wrong.
  6. 14:30 — Build the estimate in a spreadsheet or estimating software. Add labour, equipment, overhead, contingency and profit.
  7. 16:00 — Review with the senior estimator. They ask about three items you assumed and you cannot defend one.
  8. 17:00 — Revise, double-check the arithmetic, and leave the final submission for the morning when you are fresh.

Honestly

Who loves this, and who should not do it

The second list is the useful one. Nearly every careers page leaves it out, which is why nearly every careers page reads like an advert.

You may like this if
  • You like turning a messy problem into a single number you can defend.
  • You are patient with detail and comfortable checking the same thing twice.
  • You are interested in how buildings are built but would rather plan than swing a hammer.
  • You can work to a deadline when other people's lateness is part of the problem.
  • You like maths that is applied rather than abstract.
You may hate this if
  • You get anxious when you cannot be sure you are right. An estimate is a prediction, and sometimes it is wrong.
  • You dislike tedious, repetitive measuring and checking.
  • You want to be on site in the open air. This is mostly an office job.
  • Deadlines that depend on other people stress you. Bid day does not move because a supplier was late.
  • You do not like the pressure of being responsible for whether a company makes or loses money on a job.

The route in

How you actually get there in Ontario

  1. Finish secondary school

    Job Bank says completion of secondary school is required. Maths and construction technology courses are the most relevant.

  2. Two routes, both stated by Job Bank

    Job Bank says candidates typically need a three-year college program in civil or construction engineering technology, or several years of experience as a qualified tradesperson in a construction trade such as plumbing, carpentry or electrical.

  3. Consider the professional body

    Job Bank says certification by the Canadian Institute of Quantity Surveyors is usually required. CIQS says it manages two certifications: Professional Quantity Surveyor (PQS) and Construction Estimator Certified (CEC). Their requirements were not stated on the page we read, so check them directly.

  4. Expect to start by assisting

    People often start by helping with take-offs for a senior estimator. Co-op placements with a contractor during a college program are a way to get the first foot in the door.

Where this comes from: Job Bank — Requirements for construction estimators in Ontario · Canadian Institute of Quantity Surveyors — About CIQS and designations · ontariocolleges.ca — program search

The money

Construction estimator salary in Ontario

Job Bank's own figures, quoted rather than summarised, with the period they describe — so you can tell how old they are and go and check them.

$24.00
Low (hourly)
$38.46
Median (hourly)
$61.54
High (hourly)

Ontario, NOC 22303. Reference period 2023-2024, last updated by Job Bank on 19 November 2025. Wages vary a lot by region inside Ontario and by how long you have been doing it — the low figure is roughly where you start, not what the job is worth.

Source: Job Bank — Construction estimator wages in Ontario

Where it is heading

The outlook for the next three years

Job Bank publishes a three-year outlook for every job in every province. It is the closest thing to an honest forecast, and it moves, so read it as a weather report rather than a verdict.

Ontario, 2025-2027

Moderate3 out of 5 stars

  • Employment growth will lead to a few new positions.
  • A moderate number of positions will become available due to retirements.
  • There are a moderate number of unemployed workers with recent experience in this occupation.

What that rating means: how many openings Job Bank expects in Ontario for this kind of work against how many people are likely to be looking — not whether it is a good job. A “limited” rating means more competition for each opening; it does not close the door, and it can change before you are ready to walk through it.

What is changing in this work

  • Construction activity is expected to be favourable across Ontario:
  • Large infrastructure investments
  • Steady demand and investments in new housing

Who hires for it

  • Most employed in the construction industry
  • A smaller number work in manufacturing, mainly in fabricated metal product facilities
8,150
people work in this job in Ontario
16%
are women (48% across all jobs)
16%
are self-employed (15% across all jobs)

Source: Job Bank — Construction estimators job prospects in Ontario (NOC 22303). Outlook updated by Job Bank on 10 December 2025; read by us on 5 October 2026.

Before you leave school

Things you can do now

  • Take the highest maths you can manage, and any technological design or construction course your school has.
  • Ask your guidance counsellor about a co-op placement with a general contractor or an engineering firm.
  • Look at the drawings for a building project. Many municipalities publish them with planning applications, and you can practise reading them for free.
  • If your family is renovating, ask if you can follow the quotes and see how the contractor priced the work.

Test it

Do this before you decide anything

Reading about a job tells you almost nothing. This is designed to be done alone, this week, for free.

Estimate the cost of something small, then check it

About 90 minutes
  1. Pick a small project at home, such as painting a room or building a small shelf. Measure the dimensions and work out the quantities, such as the area of the walls.
  2. Look up current prices for the materials at a hardware store website. Add up the cost and write down your assumptions, for example how many coats and how much waste.
  3. Estimate how long the work would take if someone else did it and how much you would charge for your time. Add a contingency and write the final number.
  4. Check your number against a quote from an online calculator or a contractor's published rates. Find where you were furthest off and why.

What it tells you. If you liked the careful counting and the puzzle of where your number was wrong, estimating suits you. If you hated having to commit to a number without being sure it was right, or the measuring wore you out, that is a clear sign. Everything in this job is a number somebody will check later.

Better than any article

Questions for somebody who does this job

Most people say yes to a teenager who asks good questions. These are the ones that get real answers rather than encouragement.

  1. “What does your day look like, and how much of it is measuring?”
  2. “How did you learn to estimate, on site or in a program?”
  3. “How accurate are your estimates, and what goes wrong most often?”
  4. “What is the CIQS certification like, and was it worth doing?”
  5. “What do you wish you had known before you started?”
  6. “What makes a good estimator different from a decent one?”

Could you own one of these?

The part other career sites never mention

Yes, in a limited way. Job Bank reports a self-employment share close to the average for all workers. Some estimators work as independent consultants for contractors who do not have their own, but it usually takes years of experience and a reputation first.

Business 101 is free and teaches that part

Quick answers

Questions people ask about this job

How much does a construction estimator make in Ontario?

The median pay for a construction estimator in Ontario is $38.46 an hour, according to Job Bank (reference period 2023-2024, updated 19 November 2025). The range Job Bank publishes runs from $24.00 to $61.54 an hour. Pay varies by region, employer and experience.

What is the job outlook for a construction estimator in Ontario?

Job Bank rates the employment outlook for this work in Ontario as moderate for 2025-2027 (updated 10 December 2025). Employment growth will lead to a few new positions. A moderate number of positions will become available due to retirements. There are a moderate number of unemployed workers with recent experience in this occupation. A lower rating means more competition for each opening, not that no one is hiring.

What do you need to become a construction estimator in Ontario?

Job Bank says this work usually needs a college diploma, or an apprenticeship of two or more years. The usual route in Ontario, in order: Finish secondary school; Two routes, both stated by Job Bank; Consider the professional body.

Where does a construction estimator work in Ontario?

Most employed in the construction industry. A smaller number work in manufacturing, mainly in fabricated metal product facilities. (Job Bank.)

How many people work as a construction estimator in Ontario, and how many are women?

Job Bank counts about 8,150 people working in this job in Ontario. 16% of them are women, compared with 48% across all jobs. That describes who does the work today, not who can.

Skilled trades hub: kids, teens and adults The highest-paying skilled trades OYAP: start in high school What can you do with your degree?

Not sure this is the right list to be reading

Start from yourself, not from the job.

Future Finder is free, takes about ten minutes, needs no account and stores nothing. It will tell you which kinds of work you lean toward, and which of these pages are worth your time.

Try Future Finder — freeAll jobs

Parent of a teenager weighing this up? Career coaching for teens gets them talking to people who do the work, anywhere in Ontario.

If this appeals, look at these too

construction manager carpenter civil engineer building inspector

Read next

University vs college vs apprenticeship What to do after high school Careers that match your strengths All careers guides

Wages and training requirements change. Every figure on this page is linked to the body that publishes it, and the review date above says when we last checked. If you find something out of date, tell us and we will fix it.