Between the 11th and 17th October 2004, a geophysical survey was undertaken at the site of San Felice by The Archaeological Prospection Services of Southampton and The British School at Rome on behalf of Hans vanderLeest of Mount Allison University, Canada. Taking into account the pronounced topography of the overall survey area, the narrow terrace forming part of the southern edge of the field appeared to be the most likely area for habitation. Indeed, the surface collection survey had already indicated that the dense scatters of material were derived from this area. With that in mind, the results from both the resistivity and magnetometer surveys indicate evidence of activity in this area. The resistivity survey produced a plan of possible structures based around a central open courtyard area. The disturbed results of the magnetometer survey, whilst not defining individual structures, did suggest activity in this portion of the field thus confirming expectations.

The ephemeral traces of structures detected in the resistivity survey results made interpretation difficult. However it must be appreciated that the nature of the buried remains may not create strong responses and that the geology may mask archaeological features. The success of the magnetometer survey in detecting the remains of a kiln does suggest that the buildings are probably associated with this feature.