Flat Roof Replacement cost: Hilo vs Waiau-Pacific Palisades (2026)
The two metros aren't quite in sync on flat roof replacement: Hilo sits 3% below Waiau-Pacific Palisades, or roughly $10,950 versus $11,300 — about $350 apart.
Hilo HI
Lower costTypically around $10,950
Waiau-Pacific Palisades HI
Typically around $11,300
Hilo vs Waiau-Pacific Palisades: full breakdown
| Factor | Hilo | Waiau-Pacific Palisades |
|---|---|---|
| Typical 2026 cost | $10,950 | $11,300 |
| Estimated range | $5,600–$16,250 | $5,800–$16,800 |
| Labor index (vs US) | ×1.04 | ×1.08 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | $300 | $325 |
| Labor share | $6,550 | $6,800 |
| Materials/equipment | $4,400 | $4,500 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
Is the price difference a dealbreaker?
A 3% difference on flat roof replacement is minor — you'll typically see a wider spread just from getting multiple quotes in the same city, so don't let location drive the decision.
Flat roof replacement by type: Hilo vs Waiau-Pacific Palisades
Each flat roof replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Hilo | Waiau-Pacific Palisades |
|---|---|---|
| EPDM (rubber) | $5,600–$13,050 | $5,800–$13,500 |
| TPO | $6,700–$14,100 | $6,900–$14,600 |
| PVC | $7,750–$16,250 | $8,000–$16,800 |
| Modified bitumen | $5,600–$12,000 | $5,800–$12,400 |
| Built-up roofing (BUR) | $7,200–$15,200 | $7,450–$15,700 |
These are 2026 planning figures for flat roof replacement, localized to each city — not formal quotes.
Flat roof replacement by roof size: Hilo vs Waiau-Pacific Palisades
Flat and low-slope roofs are priced per square (100 sq ft) and run about $3–$11 per sq ft installed, depending on the membrane. The roof area is close to the footprint since there's little pitch.
| Size | Hilo | Waiau-Pacific Palisades |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,550–$9,350 | $4,700–$9,650 |
| 1,500 sq ft (15 squares) | $5,600–$12,000 | $5,800–$12,400 |
| 2,000 sq ft (20 squares) | $6,700–$15,200 | $6,900–$15,700 |
| 2,500 sq ft (25 squares) | $8,250–$17,300 | $8,550–$17,900 |
| 3,000+ sq ft (30 squares) | $9,850–$20,500 | $10,200–$21,200 |
Flat roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Cheapest time for flat roof replacement in either city
Shingles need warm, dry weather to seal, and demand peaks after summer storms. Booking in the slow late-fall/winter window for a spring install often unlocks off-season pricing.
Where does a smart roofing budget go in 2026?
A roofing quote can hide a lot behind a single number — whether it's a true tear-off, the shingle grade, and what's under the surface. Here's how our editors sort through it.
The risk case
Budget for the unknown: rotten decking found at tear-off is the most common surprise. Get the per-sheet repair rate in writing up front so a "cheap" bid doesn't balloon mid-job.
The value case
Architectural shingles hit the sweet spot — far more durable than 3-tab for a modest premium, and far cheaper than metal or tile. For most homes they're the right default.
The do-it-right case
Pay for a full tear-off and quality underlayment, flashing and ventilation. An overlay saves money today but traps heat, voids some warranties and costs more at the next replacement.
A roof's real cost shows up over its lifespan, not on install day. Tear-off, a documented repair rate and a mid-tier shingle grade are what keep that lifetime cost in check.
Hilo vs Waiau-Pacific Palisades
Is flat roof replacement cheaper in Hilo or Waiau-Pacific Palisades?
Hilo comes out ahead here, at roughly $10,950 for flat roof replacement compared with $11,300 in Waiau-Pacific Palisades — a 3% ($350) gap as of 2026.
Why does flat roof replacement cost more in Waiau-Pacific Palisades than Hilo?
Labor rates explain most of it — 1.08 in Waiau-Pacific Palisades vs 1.04 in Hilo. A hot climate versus hot, along with differing permit costs, accounts for the rest.
How much is flat roof replacement in Hilo, HI?
Expect to pay $5,600 to $16,250 for flat roof replacement in Hilo in 2026, averaging around $10,950.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
It doesn't vary by location — Late spring to early fall (dry, 45–85°F) is the discount window in both Hilo and Waiau-Pacific Palisades (roughly 5–10% off), while mid-winter and the post-storm rush tends to be the most expensive in either city.
Should I choose where to live based on flat roof replacement cost?
That would be a stretch. $350 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Waiau-Pacific Palisades can close a good chunk of it. What matters more long-term is energy costs, climate and the condition of the home.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik