The Palmers' Guildhall was a 3-bay aisled hall with a screens passage at the lower (S) end. The original entrance doorway was at the location of the present 18th c. door. Service rooms lay beyond the screens passage.

The original dimensions are difficult to determine because of adjustments to the ground plan (eg, a wall has been added at the N end). The length measurement includes the modern dais and the width is approximate: the W aisle is approximately 8'9" across, 9' between columns in the southern 2 bays.