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OS maps provide a recognised base for planning applications, but clear scale, coverage, boundaries and export quality are what help reduce validation delays.

This guide explains which MasterMap® and Ordnance Survey maps are required for UK planning applications and how to obtain them from MapServe®.

Use MapServe® roof layers plus OS MasterMap® to quantify dormers and loft conversions, screen them against PD rules, and evidence breaches early under England’s 10-year enforcement regime.