How much does home addition cost in Honolulu? The usual addition job filed with Honolulu is $100,000, from 979 priced permits (July 2022 through June 2025); the middle half of firms file between $70,000 and $175,000. A filed value is what the contractor wrote on the permit, not a quote or the final bill.
The usual addition job filed with Honolulu is $100,000, from 979 priced permits, July 2022 through June 2025. The middle half of firms usually file between $70,000 and $175,000. Half of jobs were filed for less, half for more. A filed value is what the contractor wrote on the permit, not a quote or the final bill. An addition permit here usually takes 567 days from issue to final inspection. How long permits take →
Approximately, from each firm's own spread: every firm's range of filed values, weighted by its 979 priced permits across 314 firms, pooled into one. Half of Honolulu addition permits were filed between $52,500 and $207,000.
| Percentile | Filed value | Reads as |
|---|---|---|
| 10th | $28,000 | 1 in 10 permits filed below |
| 25th | $52,500 | 1 in 4 filed below |
| 50th | $107,000 | the middle permit |
| 75th | $207,000 | 1 in 4 filed above |
| 90th | $324,000 | 1 in 10 filed above |
Firms split into thirds by the usual value of the homes they work on, with each third's usual filed value weighted by permits. Home values: 2022 assessed values for Honolulu parcels.
| Firms working on | Usual home value | Usual filed value | Firms | Permits |
|---|---|---|---|---|
| Lower third | under $1,004,800 | $87,500 | 102 | 290 |
| Middle third | $1,004,800–$1,315,300 | $100,000 | 103 | 437 |
| Upper third | $1,323,800 and up | $150,000 | 103 | 241 |
Top 10 by permits in the last 12 months on file (Jul 2024–Jun 2025). Usual is each firm's middle filed value; middle half is the range its middle half of jobs were filed in. Busy is not the same as careful: pick what you value to build a list.
| Firm | Permits | Last 12 mo | Usual | Middle half | Finished |
|---|---|---|---|---|---|
| Homeworks Construction, Inc | 36 | 18 | $190,000 | $113,000–$262,500 | 76.5% |
| FU Long Construction Inc | 31 | 16 | $100,000 | $49,250–$195,000 | 72.4% |
| SL Construction, LLC | 30 | 14 | $75,500 | $40,000–$100,000 | 61.7% |
| Kai Ridge Hawaii Construction, LLC | 17 | 11 | $100,000 | $60,000–$150,000 | 3 of 6 |
| Pro Build Hawaii Construction | 16 | 8 | $75,000 | $57,000–$150,000 | 4 of 8 |
| HH Constructions Inc | 12 | 8 | $140,000 | $100,000–$236,250 | — |
| Atlas Construction Inc | 37 | 7 | $120,000 | $30,000–$255,000 | 62.9% |
| Amano Construction Inc | 16 | 7 | $150,000 | $87,500–$196,250 | 2 of 9 |
| Building Science LLC | 16 | 6 | $162,500 | $87,500–$262,500 | 87.8% |
| Ahua Builders LLC | 11 | 6 | $80,000 | $37,500–$237,500 | 4 of 5 |
Line your quote up against the file. In Honolulu, 1 in 10 addition filed values sit under $28,000, the middle half between $52,500 and $207,000, and 1 in 10 over $324,000.
Honolulu files the fewest addition permits in January (82 against an average month of 100) and the most in December (117). If you can choose, ask for quotes in a quiet month. We have no prices by month, so this is about crews' schedules, not a discount. When each trade is busiest in Honolulu →
Source: City & County of Honolulu building permits (DPP). The window is July 2022 through June 2025; a permit filed after that isn't here yet.
Usual is the middle permit: half were filed for less, half for more. Only permits with a filed value count; a value of $0 or none is left out.
The spread is approximate: we keep seven points of each firm's own range of filed values, not every permit, and pool them.
Nobody paid to be on this page and nobody can. How the records work in Honolulu →
Addition cost in other cities: Orlando Cincinnati Miami Minneapolis Denver San Diego Albuquerque Boulder Greensboro Saint Paul Arlington, VA Scottsdale Somerville Cary Naperville Bellevue Cape Coral Bellingham Bend San Francisco Anaheim Columbus, OH Marin County (unincorporated)
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