You must ensure that structures such as garages and extensions to houses remain well clear of overhead lines. The NZECP 34:2001 has set down minimum distances allowed between any new buildings and overhead lines. The minimum safe distances differ depending on the voltage of the overhead lines.

If you need to build closer to overhead lines on a private property they may need to be placed underground. A specialist contractor can do this – call us for advice on (09) 430 1803.

Minimum safe distances from buildings to overhead lines
Voltage “d” (distance) 
Minimum distance 
beneath conductors
“d” (distance) 
Minimum distance to
Side of conductors
Not exceeding 1kV 4m 3.5m
Exceeding 1kV but not exceeding 11kV 5.5m 5m
Exceeding 11kV but not exceeding 33kV 7m 8.5m
Exceeding 33kV but not exceeding 110kV 7.5m 9.5m
Exceeding 110kV Refer to Table 2 NZECP34