Bill of materials for deck shape 502 & 502R

Design no:	502 & 502R
Sub option:	2
Pergola:	No
Length:	10.0m
Width:	6.0m
Height:	1000mm
Handrail type:	A

This ROBO Deck Designer makes the creation of NZ deck plan drawings a breeze. By clicking on the form controls with this website it is possible to create a working deck plan drawing of a deck within minutes with a complete list of materials. By using this service you can create a working deck drawing with limited design knowledge to the New Zealand (NZ) building code. To use the online tool the preview drawings are free, if you decide to go ahead and purchase a set of drawings the cost is from $299.00 + GST.

Timber

Timber			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
100x75mm H4 Timber	26.06	M	9.42	245.49	POA						5% wastage included
190x45mm SG8 H3.2 Timber	237.14	M	18.02	4273.26	POA						5% wastage included
140x45mm SG8 H3.2 Timber	52.50	M	12.17	638.93	POA						5% wastage included
90x45mm SG8 H3.2 Timber	32.77	M	10.88	356.54	POA						5% wastage included
100x100mm H4 Timber	23.99	M	11.46	274.93	POA						For minimum waste for a handrail post either a 2.7m or 2.4m length would be suitable. Please ensure the length available meets you requirements.
45x45mm H3.2 Gauged Timber	106.41	M	4.32	459.69	POA		5.74	610.79			5% wastage included
300x50mm SG8 H4 Timber	9.16	M	37.89	347.07							5% wastage included

Timber Piles

Timber Piles			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
125x125x1200mm H5 Timber pile	16	EA	36.84	589.44	POA		39.00	624.00

Decking

Decking			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
90x32 H3.2 Merch grade griptread decking	706.13	M	4.33	3057.54	POA

Fasteners

Fasteners			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
M16 Wedge anchor for concrete fastening, SS304 min. grade	10	EA							18.40	184.00	From Read Bros.
M12x240mm Bolt and nut, SS304 min. grade	54	EA			12.90	696.60	11.56	624.24			If any of these bolts are used for attaching a deck to a dwelling, please check on the length.
M12x150mm Bolt and nut, SS304 min.	6	EA					6.08	36.48
M12x300mm Bolt and nut, SS304 min.	6	EA			16.58	99.48	13.40	80.40			If any of these bolts are used for attaching a deck to a dwelling, please check on the length.
M12x180mm bolt and nut, SS316 grade	4	EA	7.08	28.32	9.74	38.96	7.12	28.48
M12x75mm bolt and nut, SS316 grade	6	EA	8.03	48.18	5.01	30.06	3.85	23.10
M12x200mm Coach screw, SS316 grade	110	EA	7.58	833.80	9.84	1082.40	8.00	880.00
M12x150mm Coach screw, SS316	10	EA	6.15	61.50			6.48	64.80
M12 Square Washer, SS304 min. grade	262	EA	3.54	927.48	4.14	1084.68	2.74	717.88
M16 Square Washer, SS316 grade	10	EA			4.14	41.40

Concrete

Concrete			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
Concrete	0.67	M3							220.00	147.40	Very rough estimate. Price varies considerably depending on location and quantity

Rebar

Rebar			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
D12x6M Grade 300E reinforcing bar	19.95	M	2.76	55.06	POA						5% wastage included

DPC

DPC			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
500mm x 30M Damp proof course	10.50	M							2.31	24.26	5% wastage included

Galvanised Nails

Galvanised Nails			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
75x3.15mm Decking nails, galvanised	21.39	Kg	15.75	336.89	16.72	357.64	25.99	555.93			5% wastage included
100x4mm Nails, galvanised	8.05	Kg	11.94	96.12	15.63	125.82	11.80	94.99			5% wastage included
75x3.15mm Nails, galvanised	0.27	Kg	13.33	3.60	15.76	4.26	21.80	5.89			5% wastage included

Stainless Steel Nails

Stainless Steel Nails			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
30x3.15mm Nails, Lumberlok, stainless steel	3.88	Kg	75.41	292.59	100.58	390.25	87.96	341.28			5% wastage included

Structural Brackets

Structural Brackets			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
Bowmac BS75 stainless steel strap	3	EA	37.93	113.79	40.28	120.84	37.98	113.94

Nail Plates

Nail Plates			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
Lumberlok sheet brace strap 200mm, stainless steel	84	EA	3.55	298.20	4.20	352.80
160mm Ceiling tie, left hand, stainless steel	72	EA	2.85	205.20			3.10	223.20
160mm Ceiling tie, right hand, stainless steel	78	EA	2.85	222.30			3.10	241.80

Stainless Steel Handrail

Stainless Steel Handrail			Bunnings		Placemakers		Mitre10		Others
Description	QTY	Unit	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Unit Cost	Ext Cost	Comments
38mm Stainless Steel End Cap	2	EA							14.00	28.00	From Sticky Flanges. Please click on product price for more information (select 38.1mm diameter option)
38mm Handrail Support, Stainless Steel	2	EA							31.28	62.56	From Wood Lynn. Please click on product price for more information
38mm Stainless Steel Tube	1.18	M							42.47	50.11	From Grand Glass & Hardware. Please click on product price for more information

Lowest combined price for currently priced items: $14808.96*

This total is calculated using the lowest available price shown for each priced item in the bill of materials.Please take into considerations the following points below

Where a supplier price is shown, click on the unit cost to view more information about the product.
All prices include GST (goods and services tax at 15%).
Actual purchasing costs may be higher than the calculated material cost because some products are sold only in fixed pack sizes or quantities. For example, if nails are sold in 2 kg boxes and the calculated requirement is 5 kg, you may need to purchase 6 kg.
Post lengths are approximate. Actual requirements may vary depending on hole depth, ground levels and the finished deck height. Additional length may also be required to allow piles to be trimmed after installation.
If your design involves a pergola, extra timber has been included at the end of to allow for trimming during construction.
No allowance has been made for wastage of bolts, nuts or washers.
The concrete volume is a very rough estimate, this varies greatly on the soil type, hole size and depth.
No allowance has been made for temporary bracing or timber used to hold piles in position while concrete is being placed and cured.
When opening supplier product links, we recommend waiting at least 10 seconds between opening links from the same supplier. Opening a large number of links in quick succession may result in temporary access restrictions from the supplier's website.
No allowance has been made for post caps or post capping. These may be made from suitable leftover timber, stainless steel flashing or proprietary post caps.
Material prices last updated on Wednesday 16 September 2026.

Disclaimer: Whilst this website contains a significant amount of information on the design of decks which has been produced with the highest level of professional care, ROBO Deck Designer, ROBO Design Solutions or Paul Roberts (the developer of this website) does not accept any responsibility for the accuracy of the information on this website. This website is intended as a guide only, please refer to the New Zealand building code for the appropriate regulations.