When you get three bids for a project and one is significantly lower than the others, it is natural to wonder: why is there such a difference? The answer almost always comes down to what is included — and what is being cut.
What Goes Into a Quality Bid
A thorough construction estimate from a reputable contractor accounts for: licensed and insured labor, quality materials with warranties, proper permits and inspections, engineering when required, site preparation and cleanup, project management overhead, and a reasonable profit margin.
When a bid is 30-40% below market rate, something on that list is being cut. Usually multiple things.
Where Low Bidders Cut Corners
Labor: The biggest expense in construction is labor. Low bidders often use unlicensed, uninsured workers. If someone gets hurt on your property and the contractor does not carry workers’ comp, you could be liable.
Materials: There is a reason one paver costs $3/sq ft and another costs $8/sq ft. Cheap materials crack, fade, and fail faster. A patio built with inferior materials may look great on day one and terrible by year three.
Permits: Skipping permits saves the contractor time and fee money. But unpermitted work can be a nightmare when you sell your home — and potentially dangerous if it does not meet structural codes.
Preparation: Proper base compaction, drainage planning, and site grading take time. Cutting these steps leads to settling, cracking, and water problems within months.
The Real Cost of Cheap Work
We regularly get calls from homeowners who hired the cheapest bid 2-3 years ago and now need their project rebuilt. The cost to tear out failed work and redo it properly is typically 50-80% more than doing it right the first time.
What to Look For
A detailed, itemized estimate. An active California contractor’s license. Proof of insurance. References you can actually call. A realistic timeline. And willingness to pull permits. If a contractor checks all these boxes, their price will fall within a reasonable market range — and it will be worth every penny.