How to Bid Excavation Work: A Guide to Profitable Quoting
Learn how to bid excavation work with our comprehensive guide. Master labor rates, machine costs, and overhead to create accurate profitable quotes every time.
Mastering the Art of Excavation Bidding
Learning how to bid excavation work is a critical skill that separates thriving earthmoving businesses from those that struggle to stay afloat. A successful bid must account for more than just moving dirt; it requires a deep understanding of site conditions, soil types, and specialized equipment costs. Most contractors aim for a gross profit margin of 20% to 30% after accounting for all direct expenses.
Unit Pricing and Material Variables
The most accurate way to price an excavation project is by using a unit price model—usually charging by the cubic yard. Standard dirt excavation typically ranges from $10 to $30 per cubic yard, while rock excavation can skyrocket to over $100 per yard due to the need for hammers or blasting. When you send an estimate, clearly defining what constitutes 'rock' vs. 'common' material is essential to protecting your company from unforeseen costs.
Calculating Equipment and Labor Rates
Machine time is your largest expense, so your bid must reflect current fuel prices and maintenance schedules. An excavator or backhoe carries an 'ownership cost' even when it isn't running. When figuring out how to bid excavation work, calculate your 'all-in' hourly rate for each piece of equipment, including the operator's wage and benefits. This ensures every hour on the job site is contributing to your overhead and profit.
Using Software to Speed Up the Quoting Process
Modern contractors are moving away from handwritten notes and spreadsheets. Using WinkScope allows you to build templates for common tasks like trenching, basement digging, or driveway prep. By standardizing how you write an estimate, you reduce human error and ensure that every item—from mobilization fees to fuel surcharges—is captured before the quote reaches the homeowner or developer.
Protecting Your Profit with Clear Terms
Always include a specific section in your contract for 'changed conditions.' Excavation is risky because you never know what is underground until you start digging. Whether it's buried debris, high water tables, or unknown utilities, having a clear 'Extra Work' clause allows you to adjust the price fairly without restarting the entire bidding process. This transparency builds trust with clients while protecting your bottom line.
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