If you are planning a serious remodel on the San Francisco Peninsula, getting three bids is still smart. It is just not the shield most homeowners think it is.
Three bids can help you compare pricing. They can help you spot obvious outliers. They can even tell you which contractor seems organized and professional. What they cannot do, by themselves, is protect you from scope gaps, vague assumptions, incomplete drawings, permit revisions, late selections, or hidden existing-condition problems. In other words, three bids do not remove the reasons change orders happen in the first place.
That matters even more in high-end Peninsula remodeling. Many homes in this market are older, heavily customized, expanded over time, or being pushed into a much higher performance standard than they were originally built for. On top of that, California contract rules require real detail in writing, local jurisdictions require permit documentation, and alterations can trigger energy-code compliance requirements that are easy to underestimate early on.
The hard truth is this: a change order usually does not happen because you failed to collect enough prices. It happens because the work was not fully defined before pricing started.
What homeowners hope three bids will do
Most affluent homeowners use the three-bid rule for understandable reasons.
They want market validation. They want to know whether one contractor is overpriced. They want a second and third opinion. They want to feel they are making a disciplined decision, not an emotional one.
That logic works better for a commodity purchase than for a custom design-build project. A remodel is not like pricing the same appliance from three stores. Each contractor may be pricing a different interpretation of the work. If the plans are early, if allowances are loose, or if details are still “to be determined,” then the bids are not really competing on the same scope. They are competing on different assumptions.
And different assumptions are where change orders are born.
The problem is not the number of bids. It is bid quality.
A useful bid is only as good as the information behind it.
The Contractors State License Board in California is quite categorical on the type of detail that should be present in a home improvement contract. The agreement must specify the goods to be utilized and the manner in which the work is to be done, size, colour, quantities, and model numbers, just to mention a few. It also requires written direction on permits, a date of completion, and any variation of price or section in any form should be in a written change order, which is signed by both parties before the changed work starts.
That standard is telling. If the final contract is supposed to be detailed, then the pricing that leads to that contract should be detailed too. Yet many homeowners ask for bids before enough decisions have been made. The contractor is then forced to fill in blanks. One bidder assumes standard-level tile. Another assumes imported slab material. One includes patch-and-paint only. Another assumes full-room refinishing. One carries a modest electrical allowance. Another assumes panel work is excluded unless discovered later.
All three bids may look professional. None of them may truly protect you.
Why do surprise change orders happen even on “well-bid” jobs
Here are the most common reasons three bids still fail to prevent budget shocks.
1. The drawings are not mature enough
If pricing begins from conceptual drawings, sketch plans, or lightly detailed permit plans, there are still too many decisions missing. Interior elevations, cabinet internals, appliance specs, trim profiles, waterproofing details, lighting locations, flooring transitions, HVAC routing, and structural coordination all affect cost.
Palo Alto’s own residential construction guide says kitchen and bathroom remodels, wall removal or addition, exterior changes, and additions all require plans, and that incomplete or unclear plans can delay permit issuance. It also notes that the level of plan review depends on the information supplied. That is a polite way of saying incomplete documents create downstream trouble.
2. The permit path adds scope after pricing
On the Peninsula, permit review is not just a formality. In San Mateo County, some projects may require both planning and building permits, with the planning permit needing approval before the building permit application proceeds. Palo Alto also has formal revision and deferred-submittal procedures, and warns that improper resubmittals can delay response.
That matters because a bid prepared before agency comments is not the same as a bid prepared after agency comments. If review corrections require structural changes, ventilation upgrades, new documentation, fire-sprinkler work in certain cases, or revised energy compliance, your “fixed” bid may not stay fixed for long.
3. Energy-code compliance is treated like an afterthought
The California energy code does not exclude additions and modifications. The California Energy Commission says that energy code is to be applied to additions to existing buildings and to alterations, and in the compliance manual of 2022, the rule is that once there has been additions or alterations in buildings in the sense that they involve changes to the envelope and mechanical systems, as well as changes to water heating systems, compliance documents are to be submitted along the building permit application.
For homeowners, this means your remodel is not just about finishes and layout. Changes to windows, insulation, lighting, HVAC, ventilation, and water heating can all pull technical requirements into the job. If one bid properly carries those obligations and another quietly assumes they will be handled later, the cheaper number may simply be less complete.
4. Existing conditions are unknown until walls open up
No bidder can entirely view the interior of old walls, beneath floors, or behind preceding remodel work. When the demolition commences, the contractors can find out about dry rot, undersized framing, old wiring, old plumbing, illegal modifications, foundation problems, or leveling problems that were not reasonably visible before.
This is especially common in higher-end remodels where design ambitions are pushing an older house to perform like a newer one. Hidden conditions do not care how many bids you collected. If the issue was unknowable at bid time, it can still become a legitimate change order later.
5. Allowances create false confidence
An allowance is not a final number. It is a placeholder.
Homeowners often feel protected because an allowance appears to cover a category: tile, plumbing fixtures, appliances, lighting, stone, or landscape. But unless the allowance matches what you actually plan to buy, it is just a temporary line item. The problem is not that allowances are dishonest. The problem is that they can make an incomplete budget feel complete.
In affluent Peninsula projects, finish expectations tend to rise as the design becomes more refined. That is why preconstruction teams work to turn allowances into actual selections early, before construction pricing is locked.
6. The bids are not leveled apples-to-apples
This is one of the biggest traps.
Homeowners compare three bottom-line numbers as though each contractor priced the same thing. Often they did not. One may include site protection, temporary kitchen setup, debris hauling, permit expediting, premium hardware, or final paint touch-up. Another may exclude several of those items and count on field change orders later.
California’s consumer guidance stresses that a contract should include everything agreed to, including cleanup and removal of debris, and should describe materials as specifically as possible. That level of specificity is exactly what helps expose whether bidders are truly pricing the same job.
7. You are bidding before the design-build process has done its job
In a well-run design-build process, pricing is not a single event. It is a progression.
First, the team defines the scope. Then it develops drawings and specifications. Then it identifies engineering, permit, and code implications. Then it narrows the selections. Then it prices with increasing accuracy. Done properly, the budget is refined before the contract is finalized, not discovered after demolition starts.
Three early bids from partially defined information are often less protective than one carefully developed price built from a disciplined preconstruction process.
What actually protects you better than three bids
The better protection is not fewer opinions. It is a better definition.
- A serious design-build contractor should help you reduce change-order risk by doing the following before construction starts:
- Define the scope room by room and system by system.
- Clarify what is included, excluded, and still undecided.
- Advance drawings far enough that pricing is based on real details, not wishful thinking.
- Coordinate structural, mechanical, electrical, plumbing, and finish decisions before the field team improvises.
- Identify permit and code implications early.
- Convert allowances into real selections wherever possible.
- Carry a realistic contingency for hidden conditions instead of pretending those risks do not exist.
- Write the final agreement with the level of detail California expects.
That process is not flashy. But it is what lowers the odds of expensive surprises.
A simple Peninsula example
Imagine a homeowner in Burlingame, Menlo Park, or Palo Alto planning a major kitchen remodel with a small addition and some reworked living space.
They get three bids from the same permit drawings.
Bid A is the lowest. It carries appliance, tile, and lighting allowances. It assumes existing electrical capacity is adequate. It excludes structural revisions unless required after plan check. It also assumes the owner will choose final plumbing fixtures later.
Bid B is higher. It includes more realistic finish budgets, anticipates some electrical upgrading, and flags that energy compliance documentation may change once the final window and mechanical selections are confirmed.
Bid C is the highest. It includes more preconstruction work up front, more complete specifications, and a tighter list of exclusions.
At first glance, Bid A “wins.”
Then the plan check comments come back. The team revises documents. Final fixtures exceed allowances. The panel needs work. Some framing changes appear after demolition. Suddenly, Bid A is not the bargain it seemed. It was only the least complete picture of the same project.
That is how homeowners end up saying, “We got three bids. How did this still happen?”
What to ask before you sign
Ask these questions, and listen carefully to the quality of the answers:
- What assumptions are you making that are not yet fully designed?
- Which allowances are most likely to move?
- What permit, code, or energy-compliance items could still change price?
- What exactly is excluded from this proposal?
- How did you handle unknown existing conditions?
- What level of drawings and specifications was this priced from?
- If something changes, how will change orders be documented and approved?
That last question matters. In California, change orders are not supposed to be casual verbal side deals. They are supposed to be written, priced, and signed before the changed work begins.
The real takeaway
Three bids are not useless. They are just over-trusted.
They do not guarantee that the scope is complete. They do not erase gaps in drawings. They do not stop permitting comments, code triggers, energy-compliance requirements, hidden conditions, or unrealistic allowances. And they definitely do not turn an underdefined remodel into a predictable one.
For affluent homeowners on the San Francisco Peninsula, the safer path is to treat bids as one checkpoint, not the main defense. The real defense is a design-build process that gets specific early, coordinates technical issues before work begins, and writes the contract the way California expects: detailed, clear, and documented.
When a project is properly defined, pricing gets more honest. When pricing gets more honest, change orders become more limited and more understandable. That is a much better form of protection than simply collecting one more number.+
Planning a remodel and want a bid that’s actually detailed enough to prevent surprise change orders? Book a Free Home Project Consultation: https://calendly.com/richleehomesales/30min
Sources
- California Contractors State License Board: home improvement contract guidance and sample contract
- California Energy Commission: 2025 Energy Code overview and 2022 Residential Compliance Manual for additions and alterations
- County of San Mateo: permit process and kitchen/bath remodel permit requirements
- City of Palo Alto: building permit process and residential construction guide
Rich Lee
Written by Home Pride Construction