This research analysed the views of practicing Estate surveyors and Valuers in Lagos State on the appropriate maintenance practice adopted for process plants in brewery industry because of the very important role this industry is currently playing in most national economies. The objectives used to achieve the above aim were to: identify the factors that influence useful life of plants in brewery industry; rank the views obtained from practising estate surveyors and valuers on the factors mentioned; obtain and rank the perception of these practitioners on the intervals for implementing the maintenance of process plants in brewery industry; rank the perception of estate surveying and valuation practitioners on intervals for retainerships granted engineers in this industry; and establish how brewery industry keeps track of its maintenance history. Questionnaire was the main instrument for data collection. A census of 317 estate surveyors and valuers were administered with the questionnaires, out of which 272 were successfully completed for analysis representing 80% return. Mean Item Score (MIS) was adopted to analyse the collected data. It was found out among others that technological improvements, frequency of use of plants and age when plant was acquired were the first three most significant factors influencing the useful life of process plants.it was recommended that brewery industry should undertake monthly maintenance to ensure that their operations are not hampered.

Keywords : Process Plant, Maintenance Practice, Brewery Industry, Estate Managers and Facility Managers.