For the homeowner looking to upgrade their curb appeal, the journey often starts at the end of the driveway. A well-designed mailbox post is more than just a utility; it is the first glimpse of a home's personality and a critical element of exterior organization. If your current setup involves a single, lonely post holding one modest box, the idea of a double mailbox post might be the perfect upgrade.
This guide dives into the world of DIY double mailbox post ideas, offering inspiration and practical advice for creating a functional and stunning installation. Moving beyond the standard configuration allows for better mail sorting, enhanced aesthetics, and a significant boost to property value. Whether you prefer a classic symmetrical look or a modern, statement-making design, there is a configuration to suit your taste and space.
Planning Your Double Post Layout
Before picking up a single tool, careful planning is essential to ensure your new installation is both beautiful and compliant with local regulations. Measuring the correct positioning and understanding the rules of the road will save you time, money, and potential headaches later on.

Spacing and Sizing
The distance between the two boxes is crucial for functionality and safety. You want enough room to easily access each slot without the door of one hitting the box next to it. A general rule of thumb is to center the boxes on a post that is 8 to 10 inches wide, or to place them approximately 18 to 24 inches apart if using two separate boxes on a shared post. This spacing provides ample room for mail retrieval and for the doors to swing open fully.
Local Regulations and Installation Depth
Contact your local post office and municipal building department. The United States Postal Service (USPS) has specific guidelines regarding the height, distance from the curb, and installation method for mailboxes. Typically, the box should be between 41 and 45 inches from the ground. Additionally, check for underground utilities before digging your post holes. A proper installation requires the post to be set in concrete at a depth that is one-third of the total post height above ground, ensuring stability against wind and the force of outgoing mail.
Design Ideas and Material Choices
The material you choose for your double mailbox post will dictate the overall style of your entryway. From rustic wood to sleek metal, the options are vast and allow for a high degree of customization.

- Wood: Offers a timeless, warm feel. Cedar and pressure-treated pine are popular for their outdoor durability. Consider a classic Craftsman style with a shiplap finish or a clean, modern box with clean lines.
- Metal: Provides a more contemporary and low-maintenance option. Galvanized steel or aluminum can be painted to match your home's accent colors. A vertical seam metal post can add a touch of architectural sophistication.
- Stone or Pavers: Create a substantial, upscale look. Using brick, stone veneer, or large landscape pavers to build the post structure results in a very high-end appearance that is built to last.
Creative DIY Configurations
Think beyond the standard side-by-side box setup. The "double" aspect of your post can be interpreted in many creative ways to solve specific problems or create a unique focal point.
The "Command Center" Post
Instead of two separate slots, consider one large, centralized mail slot paired with two smaller, organized compartments below. This design is perfect for a busy household. The main slot handles letters and small packages, while the lower compartments are designated for sorting mail, keys, or even small parcels for neighbors, keeping everything tidy and out of sight.
Integrated Architectural Feature
For a truly standout design, integrate the double post into a larger structure. This could involve building a small, covered porte-cochère extending from the house, where the double mailbox is elegantly framed within the support post of the roof. Or, design a feature wall at the entry using stacked stone or decorative concrete blocks, with the mailbox units recessed into the center. This approach turns a functional necessity into a work of art.
Enhancing Curb Appeal and Functionality
The right decorative touches can transform a simple double post from good to great. Lighting is a powerful tool for both safety and aesthetics. Installing a small, low-voltage landscape light on either side of the post ensures that the address numbers and mail slot are visible at night, adding a layer of sophistication and security.
Additionally, consider the surrounding landscape. Planting low-growing perennials like lavender or boxwood around the base of the post can soften the hard lines of the structure and create a seamless transition between your driveway and garden. A fresh coat of paint in a bold color, such as a deep navy or a classic black, can make the post stand as a proud architectural element against your home's siding.