Probably John Paterson, 1804-6. 2-storey 5-bay domed bank with lower 2-storey rear wings. Cream sandstone, stugged ashlar with polished dressings, to front and sides, coursed and squared rubble to rear, coursed rubble to rear and sides of rear wings. Base course; cill course at ground floor; band cill course at 1st floor; broad frieze, dentilled eaves cornice with blocking course; bays divided by Ionic pilasters (engaged columns to domed section), paired angle pilasters; aprons of blind balustrading and architraves to ground floor windows.
NW (BERNARD STREET) ELEVATION: 3 centre bays bowed with domed roof; architraved, consoled and pedimented doorway at centre with panelled door and radial iron fanlight; single window at 1st floor above. Single windows to flanking bays. Outer bays with single windows, at ground floor architraved, consoled and pedimented.
SE (MARITIME STREET) ELEVATION: 3-bay main block to right with advanced pedimented bay to centre. Architraved windows, at ground floor consoled and corniced. Single storey gig house to outer left with broad round-arched carriage doorway and secondary door with small window over; blank ashlar panel above.
NW (BANK STREET): 3-bay main block with single windows at ground and 1st floor detailed as above. Lower 2-storey 3-bay rear wing to outer right; slightly advanced pedimented bay to centre with paired windows; single windows to outer bays, some blocked.
SW (REAR) ELEVATION: 2 single storey projecting rear wings to either sides forming narrow courtyard; square projection with wallhead stack to right; bowed centre section partly obscured; single windows.
Timber sash and case windows, 12-pane and 6-pane glazing. Piend and platform slate roof with central cupola; metal flashings, copper dome (formerly lead); 2 central stacks, 1 wallhead stack (see above).
INTERIOR: circular vestibule with round-arched niches; oval telling hall with black and white marble floor, domed ceiling and oval cupola; Vitruvian scroll cornice to dome; ornate Adamesque frieze with urns, griffons, etc, still-leaf acanthus cornice and Vitruvian scroll border;
7 architraved doorways with oval panelling leading off.
RAILINGS: low boundary wall with plain modern railings with inset anthemion motifs.