Mailbox Installation Cost Calculator

A basic plastic or steel USPS-approved roadside mailbox costs $20-$60 at the hardware store. Cast aluminum decorative mailboxes run $80-$250. Brick or stone surround kits start at $150 and go up to $400 for premium units. Custom built-in-place stone or brick mailbox pillars require a mason and cost $500-$800 in materials alone. The style you choose is the single biggest driver of total project cost.

A basic wood 4x4 post costs $15-$30 and can be set in a hole with concrete for $50-$100 in labor. A metal powder-coated post runs $40-$120 and requires similar installation. Decorative cast iron or aluminum posts cost $80-$200. Any new post installation requires digging a hole, typically 24 inches deep, setting the post plumb, and allowing concrete to cure 24-48 hours before attaching the mailbox.

If your existing post is sound and plumb, a swap is a simple hardware job - new mailbox, same post. If the post is rotted, leaning, or the old mailbox was bolted through it, you'll need a full post replacement. Extracting an old post set in concrete adds $75-$150 in labor. The new post must be set and cured before the mailbox is mounted, which typically adds a day to the project.

Cluster mailbox units (CBUs) serve multiple addresses and are common in newer subdivisions and HOA communities. A standard 4-unit cluster box runs $150-$350 for the unit plus $100-$250 for mounting on a pad or pedestal. Locking individual mailboxes that protect against mail theft run $80-$200 for the unit. Installation is similar to standard post-mount but often requires a concrete pad rather than a simple in-ground post.

Reflective address number decals run $5-$15. Cast metal address plates cost $20-$60. Solar-powered address lights that illuminate numbers at night run $30-$100 for the fixture. Hardwired lighting requires an electrician and can add $150-$300 to the project. Many HOAs mandate specific address number styles and sizes - verify requirements before purchasing materials.