Summary A British team has been working since 1978 upon a programme of documentation and analysis in the Insula of the Menander at Pompeii, one of the irregular city-blocks situated immediately to the west of the old part of the city in an area which was developed from the early fourth century B.C onwards. Study of the structural techniques, of wall-abutments, and of anomalies in plan can be used in conjunction with the evidence of painted wall-plaster to identify five main phases in the building-history: Phase I (fourth-third centuries B.C), Phase 2 (second and early first centuries B.C), Phase 3 (c. 80-c. 15 B.C), Phase 4 (c. 15 B.C.-C. A.D. 50), Phase 5 (c. A.D. 50-79). These illustrate a complex pattern of changing property-boundaries, but underline the general trend towards increasing commercialization and greater pressure upon living-space in this area of the city. There is also interesting evidence of the economic basis of life in the individual houses during the years immediately before 79.