Fence Installation Guide for Oregon

Oregon Is Hard on Fences

A cedar fence in Salem will last decades. A pressure-treated pine fence in the same location might be rotting in 7 years if not maintained. Oregon's moisture levels make fence material selection one of the most important decisions in any outdoor project.

Material Comparison for Oregon

Cedar

Lifespan: 20–30 years
Maintenance: Stain or seal every 3–5 years
Best for: Privacy fences, decorative applications
Cost: Moderate-high

Pressure-Treated Pine

Lifespan: 10–15 years with maintenance, 5–8 years without
Maintenance: Must be sealed annually in Oregon
Best for: Budget-conscious installations
Cost: Lowest

Composite (Vinyl or Composite Panels)

Lifespan: 25–50 years
Maintenance: Occasional cleaning only
Best for: Low-maintenance, long-term investment
Cost: High upfront, lowest lifetime cost

Aluminum

Lifespan: 50+ years
Maintenance: None
Best for: Commercial properties, high-security applications
Cost: Premium

Permitting Requirements

In most Oregon municipalities, fences under 6 feet tall on the rear and sides of a property do not require a permit. Front-yard fences and fences over 6 feet typically do. Rules vary by city — Salem, Wilsonville, and Oregon City each have their own ordinances. On Top Home Services verifies permit requirements before every fence project.

Installation Best Practices for Oregon

• Post depth: Posts should extend at least 1/3 of their total length below ground. In Oregon's soil conditions, 3-foot depth for a 6-foot fence is standard.
• Concrete footings: Essential in Oregon's moisture-rich soil. Posts set directly in soil will rot at the ground line within years.
• Board spacing: Leave 1/8" gaps between boards for moisture drainage and expansion/contraction.
• Cap posts: Post caps prevent water from pooling on the top of posts, which is the #1 cause of post rot.