The station was split into the A-site (the top secret, technical operations area) and the B-site (accommodation and administrative buildings) located about a mile east.
Gerrards of Manchester were contracted to construct the Final system buildings for the station and many local men worked on the site. During construction, four or five buses carrying men and an additional one or two lorries would travel to the site every working day. Working on the A-site required a special pass due to the secret nature of the work there. The radar equipment itself was kept covered by black cloth while the workers were there. Sometimes, a buzzer would sound, and the workers had to vacate the site to allow the radar operators to do their work in secret.
After the buildings were constructed, equipment was brought to the site. On two occasions getting the equipment into the buildings required the walls to be breached with hammers and chisels and reconstructed afterwards.