Regardless of the location of the mast (ground or building) structures less than 50 m high do not require notification to the competent military aviation supervision authority (100 meters for civil aviation). The legal basis here is the Regulation of the Minister of Infrastructure of June 25, 2003 on the method of reporting and marking air obstacles (Journal of Laws No. 130, item 1193). It is worth remembering, however, that in accordance with § 26 section 1 of the above-mentioned regulation, the mast (over 10 meters high) should be marked at the highest level with low-intensity obstacle lights marked in Annex 2 to the above-mentioned regulation as type A.
The situation is different when the planned investment borders on aviation facilities or is located in the landing approach strip (air corridor). In this arrangement, agreement is necessary regardless of the height of the planned mast. Municipalities have appropriate maps that determine the scope of airport-proximate zones subject to special requirements. The agreement indicates the details of the painting and light marking obligations that must be met.