How Much Does Siding Cost in Portland? (2026 Guide)

Rough Fiber Cement Siding Cost by Home Size

Siding is priced by the square foot of wall, not floor area, so a single-story house with a big footprint can have more siding than a compact two-story. These are national installed ranges for fiber cement from HomeGuide, materials and labor together. Use them to sanity-check a bid, not as your quote.

James Hardie branded siding often sits at the upper end or above, because HomeGuide puts Hardie board at roughly $16 to $40 per square foot installed once old-siding removal, prep and a premium style are in the number. This Old House lists a national project average near $14,674 and a 1,500 square foot range of about $7,500 to $21,000, which lines up with the table.

Want a rough estimate of your own wall area? Measure the length of each outside wall, multiply by the wall height (about 9 feet for one story, 18 for two), and add them up. You do not subtract much for windows and doors, since the crew still trims and flashes around every opening. A plain single-story ranch is usually near the low end of its row; a two-story house with lots of gables, dormers and corners lands high, because every break in the wall is more cutting, flashing and trim. That is the single biggest reason two bids on houses of the same square footage can be thousands apart.

What Changes the Price on a Portland House

The national ranges above do not know how old your house is, and in Portland that matters. The Census Bureau's 2020-2024 American Community Survey puts the median year built in the City of Portland at 1966. On the same survey, Gresham's median is 1981 and Beaverton's is 1987. Of Portland's 307,719 housing units, 195,145 (63.4%) were built before 1980, and 82,545 (26.8%) were built in 1939 or earlier.

Why house age moves the number. An older wall has taken more decades of rain behind its siding, so on an older Portland house there is a better chance the tear-off turns up soft sheathing or framing that has to be fixed before new siding goes on. That repair is not in any of the per-square-foot ranges above. It is the main reason a Portland bid can land above a national average, and it is why tear-off is a line on our written estimate and you see the bare wall before it is covered.

Do you need a permit to replace siding in Portland? Usually not for the siding itself. Portland Permitting & Development lists replacing or repairing siding that is not required to be fire-resistant among the one- and two-family home projects that do not need a building permit, and notes the work still has to meet the Building and Zoning Codes. If the wall behind the siding needs framing work, we check with the city whether that repair needs its own permit before it starts.

The catch in historic neighborhoods. If your house sits inside one of Portland's Historic Districts, Zoning Code 33.445.200 makes exterior alterations subject to historic resource review. The exemption for work that needs no permit only applies when the change does not alter exterior features listed in the district's documentation as part of its historic significance. So a change of siding on a listed house can need review even with no building permit. That review is its own step before work starts, so we look your address up on the city's zoning map before we quote.

We did not find a published, checkable siding cost survey just for Portland, so the ranges on this page stay national. The local factors above are what usually move a Portland number away from them.

Why the Cheaper Material Is Not Always the Cheaper Decision

Vinyl siding runs about $4 to $12 per square foot installed, against roughly $6 to $15 for fiber cement (HomeGuide), so vinyl usually wins on first cost. The gap closes when you look further out. Fiber cement does not rot, warp or melt the way wood and vinyl can in a wet climate, and James Hardie backs the board with a 30-year non-prorated product warranty and a 15-year warranty on the ColorPlus factory finish. For a house that stands in Northwest rain most of the year, a lot of homeowners spend more up front to repaint and replace less later. One thing to know about us: we install fiber cement, not vinyl siding, so if vinyl is honestly the right call for your budget we will tell you that at the estimate instead of quoting it.

More on the product itself: James Hardie siding. How a job actually runs: siding installation. Local permit rules and housing age by city: Gresham, Beaverton, Hillsboro and Vancouver, WA.