What Is Estimate?
An estimate is a written document that outlines the expected scope and cost of a job before a contractor is hired to perform the work. It gives the client a price reference and gives the contractor a record of what was proposed before work starts. In contracting, the terms 'estimate,' 'quote,' and 'proposal' are often used interchangeably, though some businesses treat them differently based on formality or how binding they consider the document.
Why It Matters to Contractors
Without a written estimate, both parties often end up with different expectations about what the job includes and what it costs. Estimates protect contractors from uncompensated scope creep and protect clients from surprise invoices. They also give the business a sales funnel to track: how many estimates go out, how many convert to jobs, and how much time passes between estimate and approval. That data reveals a lot about pricing competitiveness and follow-up effectiveness.
How It Works
A contractor assesses the job, calculates the labor and materials required, applies their markup, and produces an itemized estimate document. The document is sent to the client for review and approval. If the client approves it, the estimate becomes the basis for a work order. Most software platforms convert approved estimates directly into work orders so no data needs to be re-entered. If the client declines or asks for revisions, the estimate can be updated and resubmitted.
A landscaping contractor visits a property to scope a backyard renovation. They calculate 12 hours of labor at their burdened rate, $800 in materials, and apply a 40% markup on materials. They send an itemized estimate to the homeowner. The homeowner approves it within two days. The contractor converts the approved estimate into a work order and schedules the job for the following week.
Estimate vs. Invoice
An estimate is sent before work begins and asks the client to approve a price. An invoice is sent after work is completed and requests payment. An estimate describes what the contractor plans to do; an invoice records what the contractor actually did and what it cost. In field service software, the standard workflow is estimate to work order to invoice, with each stage feeding into the next.
How Contractors Track This
Estimates are tracked through a CRM or quoting module. The primary metric is estimate conversion rate: the percentage of estimates that become booked jobs. Tracking also shows average estimate value, follow-up timing, and which job types or client segments convert at the highest rates, which helps sharpen pricing and prioritize sales effort.
Frequently Asked Questions
Is a contractor estimate legally binding?
Generally, no. An estimate is typically understood to be an approximation, not a fixed-price commitment. However, if the final invoice comes in significantly higher than the estimate without a documented reason such as an approved change order, the client may have grounds to dispute the difference. Some contractors use 'quote' or 'fixed-price proposal' when they intend the number to be binding. Clarifying this distinction in writing protects both parties.
How long should a contractor estimate be valid?
Most contractors set an expiration date of 30 to 60 days on their estimates. Material prices and labor costs can change, so an estimate from several months ago may no longer reflect actual job cost. Stating the expiration date clearly on the estimate prevents disputes when a client comes back to approve work long after the estimate was sent.
What should a contractor estimate include?
A complete estimate includes the client name and property address, the date the estimate was prepared and its expiration date, a description of the scope of work, an itemized list of labor and materials with their costs, any exclusions or assumptions, the total price, and payment terms. The more specific the scope description, the less room there is for disagreement about what was included.