Stolen guitars signed by some of rock's biggest names have been found hidden in the dirt beneath a house on Brisbane's bayside.

Although many of the guitars were damaged and signatures rubbed off, the owner has said he is thrilled to be reunited with his treasured collection.

One of the signed guitars from the stolen collection. Credit:QPS

Detective Senior Constable Lonie Horn said nine of the 14 instruments stolen from a Manly West house last month were found buried beneath a Lota house during a police search on the weekend.

Another two were found in the property's ceiling, while the remaining three were found at houses in Thorneside, Alexandra Hills and Mount Cotton.