Cost model: Town centre pedestrianisation | Features

Cost model - OPTION A
High-quality hard landscaping to circus quadrant including tented roof, steps, kiosks and ornamental pool, with associated street converted to covered mall
	Element cost (£)	£/m2 gfa	% of total cost
Preparatory works	35 500	9.59	1.61
Breaking up tarmacadam road paving, removing paving flags, taking up kerbs, gulleys, etc, taking down lampposts, etc, and removing from site		1750 m2 @	£10
Excavate over site to reduce levels and cart away		1500 m2 @	£12
Pavings and landscaping	474 500	128.24	21.55
50 mm sawn granite slabs 300 x 500 mm with flame textured surface finish bedded in granite dust and on 150 mm MOT type 1 granular filling		1550 m2 @	£110
Ditto as curved steps 700 mm wide including granite riser and reinforced concrete steps below		350 m2 @	£250
65 mm granite setts 200 x 100 mm bedded on 60 mm cement and sand screed (1:4), 150 mm 21 N/mm2 concrete bed and 150 mm MOT type 1 granular filling		700 m2 @	£140
10 m high 350-400 mm girth semi-nature tree (£2000) in purpose-made aluminium planter		5 @	£4,500
28 mm terrazzo tile pavings to mall area on 25 mm cement and sand screed (1:4) on 150 mm 21 N/mm2 reinforced concrete bed on granular fill		900 m2 @	£90
Structures	705 000	190.54	32.02
Steel-frame mast and tensioned Teflon (30-year life) tented structure spanning 40 m including foundations		600 m2 @	£400
Kiosks (7 x 4 m)		3 @	£25 000
Ornamental, irregular-shaped raised concrete pond clad in granite including central fountain, filtration and sterilisation equipment, underwater illumination and water supply, etc		200 m2 @	£1,500
Concrete retaining wall 3 m deep on foundations to sides of sunken area, one side 2 m high and top-clad in granite		75 m @	£1,200
Mall structures	442 500	119.6	20.1
Double-glazed, fire-vented mall roof on supporting steelwork including rainwater goods		900 m2 @	£400
Double-glazed aluminium curtain walls to ends of mall		150 m2 @	£350
Extra over last for three sets of doors, two automatic sliding and one hinged		30 m2 @	£1,000
Street furniture	61 600	16.65	2.8
Granite benches 2 x 1 x 0.6 m including foundations		9 @	£2,000
Stainless steel balustrading 1 m high		76 m @	£250
Stainless steel handrail		10 m @	£100
Granite bollards 1 m high		20 @	£1,000
Stainless steel litter bins		4 @	£9,000
Drainage and external services	138 500	37.43	6.29
Surface water drainage to paved area including surface drains, recessed manhole covers and connection to sewers		3500 m2 @	£15
General street lighting for an average 30 lux based on 5 m stainless steel columns @ 12 m centres and double-headed luminaires		2200 m2 @	£20
Special lighting to tented area		600 m2 @	£20
Public highway services and connections		allow	£30 000
Additional services to mall	143 900	38.89	6.54
Warm air curtains above mall entrances		6 @	£4,000
Ventilation to mall		900 m2 @	£60
Lighting to mall including emergency lighting and luminaires		900 m2 @	£50
Smoke alarm detection system to mall		900 m2 @	£5
Builder' work in connection		allow	£20 000
Preliminaries	200 000	54.06	9.09
Contractor's management and site staff, accommodation, overtime, protection, phasing and other preliminary costs - say 10%		say	£650
Flush doors; non fire rated; solid core veneer faced; hardwood frames; ironmongery; complete		115 @	£550
Allowance for services access panels		Item @	£5 000
TOTAL OPTION A	114 400	14.48	1.3
TOTAL OPTION A (LESS TENTED STRUCTURE AND COVERED MALL)	1 050 000	375	100

Cost model - OPTION B
Good-quality hard landscaping to street and the circus quadrant including sunken area, raised planters and ornamental fountain
	Element cost (£)	£/m2 gifa	% of total cost
Preparatory works	26 500	7.16	3.58
Breaking up as option A		1750 m2 @	£10
Excavate over site to reduce levels and cart away		750 m3 @	£12
Pavings and landscaping	356 000	96.22	48.11
50 mm sawn Yorkstone paving slabs to pedestrian areas bedded on sand and 150 mm MOT type 1 granular filling		1540 m2 @	£80
70 mm ditto to vehicular areas bedded on sand, 150 mm 21 N/mm2 concrete bed and 150 mm MOT type 1 granular filling		1750 m2 @	£100
70 mm sawn Yorkstone curved steps 700 mm wide including yellow brick risers and reinforced concrete steps beneath		150 m2 @	£200
Raised stone dias 6 m diameter on foundations		allow	£6,800
6 m high 25-30 cm girth semi-mature tree (£1000) in aluminium planter		7@	£3,000
Structures	120 000	32.43	16.21
Ornamental circular raised concrete pond line internally with mosaics and externally with Yorkstone, otherwise as option A		75 m2 @	£1,000
Yorkstone-faced concrete raised planters 4 m wide x 2 m high on 1 m deep foundations to sides of sunken area including imported fill and planting out		45 m @	£1,000
Street furniture	44 000	11.89	5.95
Stainless steel Woodhouse or equivalent seats 2 m long		10 @	£1,500
Stainless steel railings comprising 1 m high plain bollards at 2.2 m centres with tubular barriers between		75 m @	£350
Stainless steel illuminated MTR bollards 1 m high		10 @	£700
Stainless steel litter bins		4 @	£900
Street umbrellas		4 @	£1,000
Stainless steel signpost with finial on foundations		-	£950
Etched stainless steel finger signs		7 @	£100
Drainage and external services	127 500	34.46	17.23
Surface water drainage to paved area including surface drains, recessed manhole covers and connection to sewers		3600 m2 @	£12.50
General street lighting as option A		3700 m2 @	£17.50
Public highway services and connections		allow	£18 000
Prelminaries	66 000	17.84	8.92
As option A - 10%		3500 m2 @	£15
TOTAL OPTION B	740 000	200	100

Cost model - OPTION C
Medium-quality hard landscaping to street and the circus quadrant including raised irrigated, grassed and shrubbed areas and a central illuminated sculpture
	Element cost (£)	£/m2 gifa	% of total cost
Preparatory works	23 500	6.35	6.35
Breaking up as option A		1750 m2 @	£10
Excavate over site to reduce levels and cart away		500 m3 @	£12
Pavings and landscaping	138 700	37.49	37.49
200 x 100 x 65 mm red clay paver to various patterns in pedestiral areas bedded on sand and 150 mm MOT type 1 granular filling		2100 m2 @	£37.50
Ditto to vehicular areas bedded on sand, 150 mm 21N/mm2 concrete bed and 150 mm MOT type 1 granular filling		850 m2 @	£47.50
200 x 133 x 65 mm blue/grey tactile brick pavers bedded on sand, 150 mm 21N/mm2 concrete bed and 150 mm MOT type 1 granular filling		30 m2 @	£85
6 m high 25-30 cm girth, semi-mature tree (£1000) in tree pit		4 @	£1,500
10 m high 35-40 cm girth, semi-mature tree (£2000) in tree pit		4 @	£2,750
Structures	40 400	10.92	10.92
Raised grassed areas on imported fill, irrigated and surrounded by 0.5 m faced brick bund wall on foundations		720 m2 @	£45
Extra over last for shrubbed areas		200 m2 @	£40
Street furniture	52 700	14.24	14.24
Painted traditional cast iron-ended, three-place seat, 2000 m long as Dorothea or the equivalent with iroko slats		12 @	£400
Painted traditional cast iron railing 1 m high to slow radius including setting standards in concrete		60 m @	£220
Painted Victorian cast iron bollards 1 m high on foundations		7 @	£300
Painted Victorian aluminium removable bollards 1 m high on foundations		4 @	£400
Painted cast iron enclosed-top litter bins on foundations		4 @	£600
Painted cast iron tree guard		4 @	£250
Painted cast iron 1200 x 1200 m tree grating in frame		4 @	£400
Painted Victorian cast iron sign post and finial on foundations		-	£550
Painted sign fingers		6 @	£75
Yorkstone and metal sculpture		allow	£25 000
Drainage and external services	81 000	21.89	21.89
Surface water drainage to paved areas including surface drains, recessed manhole covers and connection to sewers		3000 m2 @	£10
General street lighting with painted cast iron Victorian columns @ 12 m centres		3700 m2 @	£6
Floodlighting to sculpture		6 @	£800
Public highway services and connections		allow	£9,000
Prelminaries	33 700	9.11	9.11
As option A - 10%		3500 m2 @	£15
TOTAL OPTION C	370 000	100	100

Cost model - OPTION D
Economical hard landscaping to the circus quadrant including convered roof to open-air market, water and electrical supplies, public lavatories and refurbishment rather than pedestrianisation of street
	Element cost (£)	£/m2 gifa	% of total cost
Preparatory works	13 000	3.51	1.6
Take off bitumen wearing course, lift existing pavings, part break up surfacing and cart away		1750 m2 @	£4
Excavate over site to reduce levels and cart away		500 m2 @	£12
Pavings and landscaping	83 000	22.43	10.2
40 mm hot-rolled asphalt wearing course laid on roads		600 m2 @	£5.50
400 x 400 x 65 mm modular concrete pavers to match existing pavements bedded on sand		260 m2 @	£13
Re-align existing kerbs		110 m @	£9
200 x 100 x 85 mm concrete block pavers as road hump 10 x 4 m including blister pavers at ends		-	£3,000
200 x 100 x 85 mm concrete block pavers bedded on sand and 150 mm MOT type 1 granular filling		2850 m2 @	£23
6 m high, 25-30 cm girth, semi-mature tree (£1000) in concrete planter		4 @	£1,700
Structures	525 000	141.89	64.5
Okalux sandwich panel open-market canopy roof on structural steel trees on precast concrete columns and foundations		900 m2 @	£450
Automatic %22French%22 public conveniences (excluding £10,000 annual maintenance charge) on foundations		2 @	£60 000
Street furniture	4 900	1.33	0.6
2 m long precast concrete exposed aggregate seat, as Marshalls' Boulevard or equivalent, bolted down		4 @	£350
Precast concrete circular bollards 1 m high		10 @	£200
Precast concrete litter bins including lid		5 @	£300
Drainage and external services	114 100	30.84	14.01
Surface water drainage to paved area including surface drains, recessed manhole covers and connection to sewers		2800 m2 @	£12
Lighting to underside of open market roof		900 m2 @	£30
General street lighting with functional lights @ 12 m centres		2000 m2 @	£4
Underground power supply to market stalls		42 @	£250
Underground ring main and water supply to market stalls		42 @	£500
Public highway services and connections		allow	£14 000
Preliminaries	74 000	20	9.09
As option A - 10%		say	£650
TOTAL OPTION D	814 000	220	100
TOTAL OPTION D (LESS OPEN MARKET STRUCTURE AND TOILETS)	148 000	40	100

ALTERNATIVE ELEMENT SPECIFICATIONS
	Element cost (£)	£/m2 gifa	% of total cost
Pavings and landscaping
50 mm standard precast concrete 600 x 750 mm grey paving flags bedded sand	260 m2 @	£11	-0.14
50 mm landscaped textured 600 x 600 mm natural-coloured paving flags with Cornish granite aggregate finish bedded on sand	260 m2 @	£22	0.63
50 mm landscaped ground 600 x 600 mm coloured paving flags with Cornish granite aggregate finish bedded on sand	260 m2 @	£30	1.2
80 mm cobblestone sets bedded in cement mortar (1:3) thick on sand on 150 mm MOT type 1 granular filling	600 m2 @	£90	£13.70
Precast concrete kerbs on foundations	110 m @	£18	0.27
Granite kerbs on foundations	110 m2 @	£45	1.07
Two course of flush granite kerbs 400 mm wide on foundations	110 m2 @	£85
Structures
Steel framed mast and tensioned PVC (15-year life) tented structure spanning 40 m including foundations	600 m2 @	£300	-16.22
Tensioned structural timber curved canopy, spanning 40 m plywood clad with waterproof covering and including foundations	600 m2 @	£500	16.22
Painted cast iron and steel decorated and glazed canopy 3 m wide to building facade with outer decorated columns	120 m @	£1,500	48.65
Painted cast iron and steel decorated domed eight-column canopy 3.2 m high on foundations	-	£35 000	9.46
Traditional cast iron fountains	@	£5000 - 20 000	-
5.5 m span painted cast iron bandstand (£30 000) on faced brickwork plinth and foundations	-	£50 000	13.5
28 m span painted steel and glass octagonal latticed girder market canopy on steel columns including central clock turret and foundations	600 m2 @	£700	113.5
4.2 m long fabricated painted steel civic bus shelter covered on one side and top with polycarbonate sheeting	-	£5,000	1.35
2.5 x 2 m electronic information board (EIB) on posts and foundations	-	£13 000	3.5
Traditional brick-faced toilet block comprising 2 female WCs, 1 male WC, 4 urinals and 1 disable toile on and inlcuding foundations	-	£80 000	21.62
Street furniture
Hardwood picnic bench and table set	-	£550	0.15
Hardwood slated benching 3 m radius around tree	-	£6,000	1.62
Aluminium flagpoles 12 m high on foundation	-	£1,200	0.33

REGIONAL FACTORS
All costs in this article are based on a scheme in the South East and should be adjusted by the following location factors for schemes in other regions:
Region	Factors
Inner London	1.12
Outer London	1.06
East Anglia	0.98
East Midlands	0.96
Northern	0.98
Northern Ireland	0.84
North West	1.02
Scotland	1.04
South East	1
South West	0.98
Wales	0.96
East Midlands	0.97
Yorkshire and Humberside	0.98