6 min read · Cost
Comparing three California siding quotes that vary 2x in price isn't simple — but it's the difference between great project and project regret. Here's the honest framework.
Step 1: ensure scope is comparable
Verify all three quotes are for substantially the same scope. Same elevations included? Same material spec? Same window scope (windows or not)? Same trim treatment? If scopes differ, normalize them first or compare scope-adjusted price.
Step 2: extract material specs
Material spec line-by-line: cladding (manufacturer + product + color/finish), WRB (specific product), flashing (where itemized), fastener (where itemized), trim (specific product). Generic 'fiber cement siding' or 'premium WRB' doesn't compare to specific 'Hardie HardiePlank ColorPlus' or 'Tyvek HomeWrap with tape'.
Step 3: compare substrate-repair allowance
Each quote should include substrate-repair allowance for unexpected damage at tear-off. Quote with $1,000 allowance vs. quote with $5,000 allowance — the $5K quote isn't 'higher cost'; it's allocating for surprises the other quote will charge as change orders.
Step 4: compare warranty terms
Workmanship warranty length, what's covered, prorating, transferability. A 10-year non-prorated workmanship warranty isn't equivalent to a 'lifetime' warranty with restrictive prorated terms. Read the actual documents.
Step 5: verify CSLB and insurance
All three contractors need verified CSLB license, current general liability insurance, current workers' comp. Verify directly at cslb.ca.gov. Don't accept marketing claims without verification.
Step 6: check references
Three recent local references for each contractor; call them. What's the experience pattern? Recent contractors with strong reviews vs. unable-to-provide-references suggests the actual quality differential.
Step 7: walk a recent project
Visit one recently-completed project per contractor. Look at install quality — corners, transitions, caulk detail, cladding-to-grade clearance. This tells you what your project will look like.
Step 8: consider the contractor relationship
Beyond price and scope: how does each contractor communicate? Are they responsive? Do they explain things clearly? You'll spend 4-8 weeks working with this contractor; quality of relationship matters.
Step 9: ignore irrelevant scoring criteria
Salesperson personality. Office quality. Marketing materials. These don't reflect install quality. Focus on the substantive criteria above.
Step 10: make the decision
Often the right contractor is the mid-priced one with the strongest itemization, verified credentials, real references, and good communication. Cheapest typically cuts scope; most expensive doesn't always deliver more. Mid-range with full documentation usually wins.
Quote comparison checklist
| Step | Focus |
|---|---|
| Scope normalization | Same elevations, materials, windows, trim? |
| Material spec extraction | Specific manufacturer + product + finish |
| Substrate-repair allowance | Realistic for home age |
| Warranty document review | Length + coverage + prorating |
| CSLB and insurance verification | Directly at cslb.ca.gov |
| References | Three recent local; call them |
| Walk recent project | Visual install quality assessment |
| Contractor relationship | Communication, responsiveness |
Key takeaways
- Normalize scope first
- Compare itemized material specs
- Verify CSLB + insurance + references directly
- Mid-priced with strong documentation usually wins
FAQ
Quick Answers
Diminishing returns; three substantive comparisons is usually enough.
On aged stock, $2,000-$5,000 is typical; on newer construction, $1,000-$2,000.
Sources
Authoritative references
- Contractors State License Board (CSLB) — verify a California contractor
- James Hardie — official product & installation resources
External links to government, code, and manufacturer sources. Sierra Siding is not affiliated with these organizations; references are provided for verification.