How to Compare Remodeling Bids That Look Nothing Alike

Two contractors walk through the same kitchen. A week later, you have two quotes. One says $85,000. The other says $61,000. Neither number means anything yet, because you don’t actually know if they’re pricing the same project.

This happens constantly, and it’s rarely because one contractor is trying to take advantage of you. More often, it’s because “the same project” isn’t as fixed as it sounds. Two honest, competent contractors can walk the same space and build two legitimately different scopes of work, priced two legitimately different ways. The problem isn’t the math. It’s that most homeowners are handed two documents that use different formats, different assumptions, and different levels of detail, and asked to compare them like they’re comparing the same thing.

Here’s what’s actually driving the gap, and how to line the numbers up before you decide anything.

Why the Same Project Gets Wildly Different Numbers

Before a number means anything, it has to be attached to a defined scope. A few of the most common reasons two bids diverge:

Different assumptions about what’s behind the walls. A contractor pricing a kitchen remodel or bathroom remodel in a Marin or San Francisco home has to make a judgment call about what they’ll find once demolition starts. One contractor might build in a contingency for outdated wiring or plumbing they expect to find in a pre-1960s home. Another might price the job assuming nothing unusual turns up, and plan to issue a change order if it does. Both are legitimate approaches. They produce different numbers up front.

Different material tiers baked into the price. A quote that includes mid-range tile and stock cabinetry will look cheaper than one that includes custom cabinetry and natural stone, even if every other line item is identical. If the material tier isn’t spelled out, you’re not comparing prices, you’re comparing guesses.

Different treatment of permits and fees. Some contractors include permit costs and their own time pulling permits in the base price. Others list it as a separate line item, or leave it out entirely and expect the homeowner to handle it. Marin County and San Francisco have different permit review processes, and the coordination time varies enough between jurisdictions that this alone can shift a bid by several thousand dollars.

Different scopes disguised as the same project. “Bathroom remodel” can mean refinishing what’s there, or it can mean moving plumbing, reframing for a new layout, and rebuilding the shower system from the studs out. If the two quotes don’t describe the same physical scope of work, the price difference isn’t the useful data point. The scope difference is.

What Should Actually Appear in a Legitimate Estimate

California requires a written contract for any home improvement job over $500, and that contract has to include specific information, not just a total price. According to the Contractors State License Board’s consumer guide to home improvement contracts, a compliant contract should include, at minimum:

• A detailed description of the work and materials to be used
• A written payment schedule tied to project milestones
• Written direction on who is responsible for pulling permits
• An estimated start and completion date
• The contractor’s license number and required disclosures

If a quote is missing most of this and is really just a one-page number, it’s not yet a document you can compare against anything. Ask for the detail before you try to compare it to another bid.

Allowances vs. Fixed Pricing: The Distinction That Confuses Most Homeowners

One of the most common sources of bid confusion is the allowance. An allowance is a dollar amount set aside in the contract for something that hasn’t been selected yet, like tile, plumbing fixtures, or countertops. It’s not the final cost. It’s a placeholder.

Here’s where it gets confusing: two contractors can quote the exact same allowance amount for tile, but one is being realistic about what that budget actually buys and the other is lowballing it to make the total number look more competitive. If you pick a tile that costs more than the allowance, the difference gets added later as a change order. A lower total price with unrealistic allowances isn’t actually a lower price. It’s a price that’s going to grow.

When you’re comparing bids, ask each contractor to walk you through what their allowance figures are actually based on, and whether they reflect current material costs for the quality level you’re expecting.

Questions to Ask Before You Put the Numbers Side by Side

A few questions that do more to make bids comparable than anything else:

• Does this price assume the existing electrical and plumbing stay as-is, or does it include upgrading anything?
• What happens if something unexpected turns up once demolition starts? Is that priced in, or handled through a change order?
• What’s included in the allowance figures, and is that based on materials I’d actually choose?
• Who is pulling permits, and is that cost included in this number?
• What is the payment schedule, and is it tied to completed milestones rather than a flat percentage upfront?
• Does this include cleanup and disposal, or is that separate?

If two contractors give you meaningfully different answers to these questions, you now know why the totals don’t match, and you can decide which approach you actually want, rather than just picking the smaller number.

Older Homes Make This Comparison Harder, Not Easier

This is where working with older housing stock in Marin County and San Francisco adds a layer most generic remodeling advice doesn’t cover. A Victorian or Edwardian home, or a mid-century Marin house that’s never been touched below the surface, is far more likely to have plumbing, framing, or moisture issues that only show up once walls come down. We’ve written before about how moisture and vapor barrier issues surface in older Bay Area homes and about the subfloor problems common in older Marin houses — both are examples of the kind of existing-condition risk that a careful contractor prices differently than one who’s assuming a clean slate.

This doesn’t mean the higher bid is automatically the honest one. It means you should ask directly how each contractor is accounting for the age and condition of your specific home, rather than assuming every bid was built on the same assumptions about what’s behind your walls.

A Simple Framework for Comparing Bids Fairly

Before comparing totals, put each bid through the same four questions:

1. Is the scope actually the same? Line up the physical work described in each bid, not just the service name.
2. Are the material tiers the same? A number is only useful next to another number if both assume a similar quality level.
3. What’s fixed and what’s an allowance? Know which numbers are final and which are placeholders that could grow.
4. What’s the plan for the unexpected? In an older home especially, ask how each contractor handles conditions that show up after demolition.

Once those four questions are answered the same way for each bid, the remaining price difference is finally telling you something real, whether that’s a difference in efficiency, overhead, subcontractor relationships, or simply how each contractor weighs risk.

Common Questions

Q: Why did I get remodeling quotes with a $20,000+ difference for what seems like the same project? A: Usually because the two quotes aren’t actually describing the same scope, material tier, or treatment of existing conditions, not because one contractor is overcharging. Ask each contractor to walk through their assumptions before comparing totals.

Q: What’s the difference between an allowance and a fixed price in a remodeling contract? A: An allowance is a placeholder budget for something you haven’t selected yet, like tile or fixtures. A fixed price is the final cost for something already specified. A low bid built on unrealistic allowances often ends up costing more once real selections are made.

Q: Is the lowest bid usually the best choice? A: Not necessarily. A lower number can reflect a smaller scope, lower-tier materials, unrealistic allowances, or a different plan for handling unexpected conditions. The lowest bid is only meaningful once you know it’s describing the same project as the others.

Q: What should be included in a legal remodeling contract in California? A: California requires a written contract for home improvement work over $500, including a detailed scope and materials description, a written payment schedule, permit responsibility, and an estimated timeline, per CSLB requirements.

Q: Does an older home in Marin or San Francisco make bids harder to compare? A: Often, yes. Older homes carry more uncertainty about what’s behind the walls, and contractors price that uncertainty differently. Ask directly how each bid accounts for your home’s age and condition rather than assuming all bids made the same assumptions.