Guide · Before you sign
Plumbers in Honolulu: Cost Guide to Prices, Deposits and Warranties
What plumbers cost in Honolulu, what the 5 businesses in our report actually disclose about prices and terms, and the public facts and questions that belong in every quote.
Section 1What Honolulu businesses disclose
From the 5 businesses in our Honolulu report. The terms that matter most when something goes wrong are often the ones shared least.
| Term | Disclosed by | What we've seen |
|---|---|---|
| Typical price range | 0 of 5 | Not provided |
| Deposit | 0 of 5 | Not provided |
| Payment schedule | 0 of 5 | Not provided |
| Warranty | 0 of 5 | Not provided |
| Change-order pricing | 0 of 5 | Not provided |
| Cancellation terms | 0 of 5 | Not provided |
| Financing | 0 of 5 | Not provided |
| Estimate policy | 0 of 5 | Not provided |
Public dataLocal facts: the rules and figures behind a Honolulu quote
Your contract should match the local rules. These are the official sources.
| Fact | Figure | Period | Source |
|---|---|---|---|
| People per square mile | 5,639 | 2025 | Calculated from U.S. Census Bureau 2025 estimates and Gazetteer land area |
| Land area | 60.6 sq mi | 2025 | U.S. Census Bureau, 2025 Gazetteer files |
| Honolulu residents | 341,868 | July 1, 2025 | U.S. Census Bureau, Vintage 2025 population estimates (sub-est2025) |
| Population change since 2020 | -2.6% (from 350,993 (April 2020 base)) | 2020–2025 | U.S. Census Bureau, Vintage 2025 population estimates (sub-est2025) |
Figures from public sources. Sample figures show what our live public-data feed will fill in; they are not real counts.
Section 2Checklist before you sign
- An itemised written price.Permits, materials, equipment, disposal and cleanup each on their own line.
- The deposit and payment stages in writing.Each payment tied to finished work you can see.
- How changes are priced.Fixed written price per change, or cost plus a stated markup.
- The warranty document.What it covers, for how long, and whether it transfers.
- License and insurance.Check the license on the state lookup; get the insurance certificate from the insurer.
- Cancellation and delays.What you get back if you cancel, and what happens if the start date slips.
Section 3Frequently asked questions
Which plumbers in Honolulu are included here?
Every active business with enough public data is listed, so you can compare them on the same fields. We compared 5 plumbers for Honolulu. Paid placements never change the order.
Which of these plumbers in Honolulu has the best reviews?
Roto-Rooter Plumbing & Water Cleanup has a 4.8 rating from 1058 (2021) (2021) public reviews, the highest on this page.
Are these plumbers licensed?
5 of the 5 businesses here had their state license checked against public records. Each profile shows the source and the date of the check.
How many quotes should I get for plumbers in Honolulu?
Get at least three. Use the quote form on this page: only the businesses you tick receive your request.