Flagpole installation in Finland – building permit, location and foundation

Installing a flagpole begins with choosing the location and height and finding out whether the municipality’s provisions apply to the project. Then come digging, foundation and erection. This guide describes what the Building Act, the municipal building ordinance and manufacturers’ instructions say about installing a flagpole. It does not replace the manufacturer’s installation instructions for the pole concerned.

Building permits and the flagpole

The Building Act (751/2023) entered into force on 1 January 2025. According to the Ministry of the Environment, the Act replaced the building permit, the action permit and the action notification with a single building permit (rakentamislupa) and raised the permit threshold. Under section 42 of the Act, a building permit is required for a new mast or chimney at least 30 metres high. An ordinary flagpole is well below that.

A permit may nevertheless be required for a smaller project. Under section 42(2) of the Act, a building permit is required if the building has more than a minor impact on land use, the townscape, the landscape, cultural heritage or environmental aspects. The municipality can provide in its building ordinance that no permit is needed for a project regarded as minor.

According to the Ministry of the Environment, even when no permit is needed, building must comply with

• plan provisions
• building regulations
• the municipality’s building ordinance.

The municipal building control authority can give information on whether the plan or building ordinance applies to a flagpole on a given plot. In protected surroundings or a culturally valuable yard, this is often clarified before the pole is bought. In a housing company, putting up a pole is decided in the company’s decision-making process.

Åland has its own building legislation, so the region’s provisions apply there.

The pole’s location in the garden

According to Suomalaisuuden Liitto, a flagpole is placed in a central, easily noticed spot that suits the landscape and has nothing in the immediate vicinity to hinder the flag flying, such as trees or buildings. Usually the best spot is in the front garden, for example on a lawn. According to the Association, the pole is not placed in an out-of-the-way spot or next to refuse containers.

When choosing the spot it also helps to consider that the flag and pennant need room to fly in every direction and that a tilting pole needs room to be lowered for maintenance. The proximity of power and telephone lines is a safety matter both when the pole is erected and when it is lowered.

Checking for cables before digging

A garden may contain electricity, telecom and district heating cables and water and sewer pipes. According to Johtotieto Oy’s Johtotietopankki service, the locations of underground cables and pipes are checked before digging, and a location enquiry is made at least three working days before digging begins. The service provides cable maps, and cables can be marked on the ground by a marking service when needed. According to Johtotietopankki, the marking does not remove the digger’s responsibility for any damage. The property’s own cables, such as those of garden lights, usually do not appear on network companies’ maps.

Foundation

A flagpole is usually fixed either in a ground sleeve cast in concrete or on a tilting base bolted to a concrete foundation. Ready-made foundations are also available. The size of the foundation depends on the pole’s height, the flag’s size, wind conditions and the soil, and the manufacturer usually states the dimensions and amount of concrete. In Finnish conditions, ground frost is one of the factors in designing the foundation.

Under section 29 of the Building Act, a structure must meet the essential technical requirements that are essential to safety if its failure could endanger people, and building must follow good building practice. The concrete is left to cure for the time stated by the manufacturer before the pole is raised and the flag hoisted.

Erection

A light fibreglass pole can often be raised by two or more people, while long aluminium and steel poles are usually erected with a lift. On a tilting base, the pole is raised on the hinge and locked with bolts. The risks of erection are described in the guide to flagpole safety.

Lighting and electricity

If a light is wanted at the foot of the pole, the cable route can be planned while the foundation is dug. According to Tukes, an ordinary electricity user may not carry out fixed electrical installations, but extra-low-voltage lighting systems, for example at 12 volts, may be installed following the manufacturer’s instructions. More information is in the guide to flag lighting.

Pole height and transport

Choosing the height is described in the guide to flagpole heights, and transporting a long pole in the guide to flagpole transport.