Internet Archaeol. 19. Geddes. Table comparing individual buildings.

Building	Period/Type	Dimensions in metres	Internal area (m²)	Internal area - 2 floors (m²)	Roof area (m²)	Rafter length in metres
Dun Mor Vaul	Broch	8	50.3	–	71	5.7
Dun Carloway	Broch	7.5	44.2	88.4	62.4	5.3
Dun Bharabhat	Broch	5.5	24	48	34	3.9
Loch na Berie	Broch	15	176.7	353.4	250	10.6
Dun Vulan	Broch	10	78.5	157	131	7.1
Dun Cuier	Broch	8.8	60.8	–	86	6.2
Kilpheder	Wheelhouse	8.8	53.6	–	27.8	3.5
Sollas	Wheelhouse	10.9	87	–	55	5
Drimore, South Uist	Norse	14 x 5	70	–	98.4	3.5
Bornish A, South Uist	Norse	10 x 4.3	43	–	50.9	3
Bornish 3/1, South Uist	Norse	7.2 x 4	28.8	–	52	2.8
Bornish 3/2, South Uist	Norse	3.8 x 4.6	17.5	–	24.7	3.4
Kilpheder 007, South Uist	Norse	6.9 x 3.2	21.7	–	31.8	2.3
Kilpheder 312, South Uist	Norse	8.4 x 3.9	32.8	–	34.6	2.3
Udal, North Uist	Wheelhouse	13 x 5	65	–	92	3.5
Udal a	Wheelhouse	11	68	–	27.8	3.5
Udal b	Wheelhouse	11	67	–	27.8	3.5
Udal c	Wheelhouse	8	30.5	–	17.8	2.8
Beirgh	Cellular	6.5	c.48.2	–	46.9	4.6
Dun Cuier	Cellular	7.1 (diameter)	44.2	–	62.4	5.3
Bostadh 1	Cellular	6 (dia.) + 4.5 (dia.)	32.8	–	62.4	4.2
Bostadh 3	Cellular	6 (dia.) + 2.25 (dia.)	44.2	–	62.5	4.2
42 Arnol, Lewis	Blackhouse	18.5 x 3.5 13.5 x 2	91.8	–	132.8	2.5
39 Arnol, Lewis	Blackhouse	19.5 x 3.5 8 x 1.5 14 x 1.5	101	–	146	2.5