Installing a flagpole in the United States: permits, 811 and foundation

Installing a flagpole in the United States involves several layers of rules: the building code adopted by the state and the city or county, the local zoning code, the rules of a homeowners’ association and, for everyone who digs, the 811 system for buried utilities. This guide describes these rules and the basics of a flagpole foundation; the choice of pole is covered in the guide to types of flagpoles.

Building permits

There is no federal building permit for flagpoles. Building codes are adopted by states and local governments, often based on the International Building Code (IBC) of the International Code Council, with amendments of their own. Section 105.2 of the IBC lists work that needs no permit, such as fences up to 7 ft, retaining walls up to 4 ft and playground equipment at one- and two-family homes; flagpoles are not on the list. Whether a particular flagpole needs a building permit is therefore decided by the local building department, which may have exempted small flagpoles in its own amendments.

Zoning: height, setbacks and number

Local zoning codes decide where a flagpole can stand and how tall it can be. An example is Durham, North Carolina, whose Unified Development Ordinance sets:

Commercial flags with logos or messages are treated as signs in Durham and follow the sign standards, as described in the guide to flagpoles for businesses.

HOA rules

In a homeowners’ association, the governing documents can add rules on flagpoles, within the limits of state law. Texas protects at least one flagpole of up to 20 ft in the front yard, Florida a freestanding flagpole of up to 20 ft that does not obstruct sightlines at intersections and is not in an easement, and Arizona a flagpole in the front yard or backyard. Florida’s law keeps the pole subject to building codes, zoning setbacks and local noise and lighting ordinances. More in the guide to flags in HOA communities.

811 before digging

811 is the national call-before-you-dig number. According to the Common Ground Alliance, every digging project, from installing a mailbox to a commercial build, requires contacting 811 a few days in advance, as some utilities are buried just inches below the surface. Not contacting 811 is the top cause of damage to buried utilities, which the alliance puts at about $30 billion a year in the United States.

The foundation

Most in-ground flagpoles are set in concrete. According to Concord American Flagpole:

• Ground set installation is the strongest and most common: the pole stands in a ground sleeve in a concrete foundation, buried to a depth equal to 10 percent of the mounting height.
• A shoe base is used when the pole is mounted above ground.
• The NAAMM metal flagpole manual gives basic foundation measurements for firm, dry soil only; soil varies by site, and the exact requirements are verified by a structural engineer with knowledge of the local soil.

The New York State Department of Transportation’s specification for an aluminum flagpole describes a typical public installation: a corrugated steel pipe sleeve in a concrete footing, galvanized steel, sand, grout, oak wedges and caulking, with the pole set truly vertical and tested by flying a 5 × 8 ft flag for a week or longer.

Wind speed

Flagpoles are designed for the wind at the site. According to Concord American Flagpole, the ANSI/NAAMM FP 1001-07 guide specification publishes a map from ASCE 7 of 3-second gust wind speeds, and a pole whose wind rating does not meet the maximum wind speed for the location, or that flies a flag larger than the recommended size, can cause injury and property damage. New York’s specification, for example, uses 80 mph for New York City, Long Island, Westchester, Rockland and a number of western counties, and 70 mph for the rest of the state. More in the guide to flagpole safety.

Very tall poles

A flagpole of more than 200 ft, or a lower one near an airport, requires notice to the Federal Aviation Administration under 14 C.F.R. § 77.9, as described in the guide to flagpole heights. Getting a long pole to the site is covered in the guide to transporting a flagpole.