“How much does a new roof cost?” is the first question almost every homeowner asks. The honest answer is that it depends on your specific roof. Two houses on the same street with the same square footage can have very different prices because of pitch, layers, decking condition and design.
Instead of giving you a number that may not apply to your home, this guide explains the eight factors that drive the cost of a roof replacement in Olympia, so you can understand your quote and compare bids fairly.
1. Roof Size
Roofers measure in “squares,” with one square equal to 100 square feet of roof surface. Roof area is larger than your home’s floor area because of the slope and overhangs. More squares mean more materials, more labor and more debris to haul away.
2. Pitch (Steepness)
Steeper roofs take longer to work on safely. They need extra safety equipment and staging, and crews move more slowly. Many older homes in South Capitol and on the Eastside have steep, complex roofs that cost more per square than a simple low-slope rambler.
3. Complexity
Every valley, hip, dormer, skylight, chimney and wall where the roof meets siding adds cutting, flashing and labor. A simple gable roof with two planes costs less than a roof with eight facets and three dormers, even at the same size.
4. Number of Layers to Remove
Many Olympia homes have two layers of shingles from an earlier reroof. Removing extra layers takes more time and produces more debris and disposal fees. A full tear-off is still the right approach, because it lets the roofer inspect the deck.
5. Decking Repairs
Once the old roof is off, the condition of the sheathing becomes clear. Years of leaks or moss along the eaves can leave soft or rotted boards that must be replaced. Older homes may have skip sheathing (gaps between boards) that needs new plywood or OSB over it. A good quote explains how decking repairs are priced, usually per sheet, so you aren’t surprised.
6. Materials
Architectural asphalt shingles are the most common choice. Premium shingle lines, impact-rated products and designer styles cost more. Metal roofing costs more than shingles but lasts much longer. Our comparison of metal roofs and asphalt shingles explains the trade-offs.
Underlayment, ice and water shield, flashing, drip edge and ventilation are also part of the materials cost. Cutting corners on these hidden parts is a common way low bids save money.
7. Ventilation and Flashing Upgrades
Many homes in our damp climate have under-ventilated attics, which causes condensation, mold and shorter shingle life. Adding ridge vents and opening soffit vents is usually done during a replacement. Replacing old chimney and wall flashing instead of reusing it also adds cost, but it prevents the most common leaks.
8. Access, Permits and Disposal
Steep driveways in West Olympia, tight lots, and homes where a dumpster can’t be placed close all affect labor. Permit fees vary by jurisdiction: City of Olympia, Lacey, Tumwater or Thurston County. Debris disposal is charged by weight, so heavier roofs cost more to haul away.
How to Compare Roofing Quotes Fairly
When you get more than one bid, make sure you are comparing the same scope. Ask each roofer:
- Is this a full tear-off, and how many layers will be removed?
- How are decking repairs priced?
- Which shingle line and underlayment are included?
- Is ice and water shield included in valleys and at the eaves?
- Will all flashing be replaced or reused?
- Is ventilation being improved?
- Is the permit included?
- What workmanship warranty do you provide, in writing?
- Are you registered with Washington L&I, bonded and insured?
The lowest number often leaves out items that the higher bids include. A detailed, itemized quote protects you.
Ways to Manage Cost
- Plan ahead. Scheduling early gives you time to compare options and materials.
- Combine projects. Replacing gutters or siding at the same time as the roof can save on setup and labor.
- Keep up with maintenance. Regular moss removal and gutter cleaning help your current roof last as long as possible.
Is It Time for a Replacement?
If you aren’t sure whether you need a new roof yet, start with the warning signs and a professional inspection. Our roof replacement service page explains exactly what is included in a complete system.
Get a Written, Itemized Quote
Olympia Roofers measures your roof, photographs any problem areas, and gives you an itemized quote with material options before any work starts. As a local roofing contractor in Olympia, WA, we serve homes across Olympia, Lacey and Tumwater. Use the short form on this page to book your free estimate.