Scientific methods, showing the researcher how properly to acquire knowledge, exist in all fields of science. Archaeological surface surveys are not an exception. Some of the applicable methods have been developed in theory, and others deliberately modified for the execution of certain regional projects, but all of them contain all the non-destructive archaeological work focused on the spatial aspect – preliminary preparations, actual fieldwalking and post-processing activities. Archaeology in Bulgaria has also taken part in these world trends. Being a territory densely inhabited since the Prehistoric periods to Modern times, it has offered a vast amount of knowledge to researchers. Extensive surveys aimed at acquiring all sort of information have been conducted in Bulgaria since the middle of the 16th century. Most of the surveys in the 20th century have been site-orientated, some of them even being deliberately focused only on sites dating from a specific chronological period. All of the listed trends are part of the development of archaeological surface survey methods. As a result a great amount of legacy data has been accumulated, most of which has been collected in the database “Archaeological Map of Bulgaria”. In the early 1980s several attempts at intensive systematic surveys took place in Bulgaria involving many researchers. Unfortunately, these processes were suspended until recent times when the established field survey methods were combined with Geographic Information Systems software, in both desktop and mobile applications. Intensive surveys, both systematic and salvage, showing the densities of artefacts as “carpet-like” scatters are becoming more and more popular in Bulgaria nowadays. Spatial location and replicated collections of site surfaces with assessment of ground visibility show interesting trends most of which have been discussed in foreign publications.