New Zealand (NZ) Deck Design - ROBO Deck Designer
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Deck design plans NZ

Material Pricing

Please note all prices are in New Zealand dollars and include GST (Goods and Services tax). For more information on the product from a vendor, please click on the link on the prices (except concrete).

Timber

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
40 100x75mm H4 Timber M 8.88 POA   Include wastage when calculating timber
41 300x50mm SG8 H4 Timber M 34.71 POA   Include wastage when calculating timber
42 45x45mm H3.2 Gauged Timber M 4.32 POA 5.51 Include wastage when calculating timber
43 42x420mm H3.2 radiata baluster EA 7.15 9.99   Please check length, as this differs from each vendor. Please ensure the length available meets you requirements.
44 90x45mm SG8 H3.2 Timber M 8.73 POA   Include wastage when calculating timber
45 140x45mm SG8 H3.2 Timber M 10.10 POA   Include wastage when calculating timber
46 190x45mm SG8 H3.2 Timber M 14.68 POA   Include wastage when calculating timber
47 100x100mm H4 Timber M 10.17 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.
89 150x12x1800mm fence paling, treated pine M 1.93     Include wastage when calculating timber

Timber Piles

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
48 125x125x600mm H5 Timber pile EA   POA 18.50  
49 125x125x750mm H5 Timber pile EA 19.46      
50 125x125x900mm H5 Timber pile EA 23.33 POA 27.60  
51 125x125x1200mm H5 Timber pile EA   POA 36.50  
52 125x125x1500mm H5 Timber pile EA 38.97 POA 45.60  
53 125x125x1800mm H5 Timber pile EA 46.71   55.20  
54 125x125x2100mm H5 Timber pile EA        
55 125x125x2400mm H5 Timber pile EA 62.28   73.90  
56 125x125x2700mm H5 Timber pile EA   POA    
57 125x125x3000mm H5 Timber pile EA 80.83      
58 125x125x3600mm H5 Timber pile EA 96.00 POA    
104 125x125x4400mm H5 Timber pile EA       POA From Cypress Sawmill, please click on price for more details

Decking

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
1 138x32mm H3.2 Merch grade griptread decking M 4.94 POA    
2 138x32mm H3.2 Merch grade smooth decking M 4.94      
3 140x19mm H3.2 Merch grade smooth decking M 3.94      
4 90x32 H3.2 Merch grade griptread decking M   POA    
5 100x32 H3.2 Merch grade smooth decking M   POA    
6 88x21mm H3.2 Merch grade griptread decking M 2.41      
7 88x21mm H3.2 Merch grade smooth decking M 2.41      
8 138x32mm H3.2 Premium grade griptread decking M 10.93 10.99    
9 138x32mm H3.2 Premium grade smooth decking M 10.93      
10 90x32mm H3.2 Premium grade smooth decking M   POA    
11 90x32mm H3.2 Premium grade griptread decking M   6.70    
12 90x32mm H3.2 Premium grade smooth decking M        
13 88x32mm H3.2 Premium grade griptread decking M 7.00 5.00    
14 88x21mm H3.2 Premium grade smooth decking M 4.63 POA    
15 140x19mm Kwila griptread decking M 9.70 POA    
16 90x19mm Kwila griptread decking M 6.20 POA    
17 140x19mm Vitex smooth decking M   POA    
18 90x19mm vitex smooth decking M   POA    
19 115X19mm Vitex smooth decking M   POA    
20 140x19mm Garapa smooth decking M   POA    
21 90x19mm Garapa smooth decking M   POA    
22 137x23mm Ekodeck classic greystone composite decking M 16.48      
23 137X23mm Ekodeck designer series backbeach/leatherwood composite decking M 20.36      
24 137x23mm Ekodeck designer series alpine ash/ironwood composite decking M 20.36      
25 137x23mm Ekodeck designer series riverbank red/estate brown composite Decking M 20.36      
26 137x23mm Ekodeck leatherwood designer edge board composite decking M 23.89      
32 136x24mm Terrain silver maple grooved decking M   34.83    
33 140x25 Vintage collection Coastline advanced PVC decking board M   46.50 33.17  
34 140x25 Landmark collection French White Oak advanced PVC decking board M   44.83 33.17  
35 140x25 Landmark collection Castle Gate advanced PVC decking board M   44.83 33.17  
36 184x25 Azek Slate Gray Pale Grey advanced PVC decking board M   50.83 34.83  
37 140x25 Azek Boardwalk advanced PVC decking board M   44.83 33.17  
38 135x27mm H3.2 Premium thermally modified timber decking, oil coated M 7.70      
39 88x27mm H3.2 Premium grade thermally modified timber, decking oil coated M 4.40      

Fasteners

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
59 M12 Square Washer, SS304 min. grade EA 3.54 4.05 2.62  
60 M12x240mm Bolt and nut, SS304 min. grade EA 7.08 10.99 11.04 If any of these bolts are used for attaching a deck to a dwelling, please check on the length.
61 M12x260mm Bolt and nut, SS304 min. grade EA 9.60 14.49 12.24 If any of these bolts are used for attaching a deck to a dwelling, please check on the length.
62 M12x180mm bolt and nut, SS316 grade EA 7.08 8.99 6.80  
63 M12x75mm bolt and nut, SS316 grade EA 8.03 4.29 3.67  
64 M12x100mm Coach screw, SS316 grade EA 4.83 6.29    
65 M12x200mm Coach screw, SS316 grade EA 7.58 9.45 7.60  
103 M12x150mm Coach screw, SS316 EA 6.15   6.16  
105 M12x300mm Bolt and nut, SS304 min. EA 10.40 15.49 12.80 If any of these bolts are used for attaching a deck to a dwelling, please check on the length.
106 M12x150mm Bolt and nut, SS304 min. EA     5.80  
107 M16 Wedge anchor for concrete fastening, SS304 min. grade EA       57.74 Available in packs of 12 or 25
108 M16 Square Washer, SS316 grade EA   4.05    

Concrete

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
0 Concrete M3       200.00 Very rough estimate. Price varies considerably depending on location and quantity

Rebar

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
66 D12x6M Grade 300E reinforcing bar M 2.76 POA   Include wastage when calculating reinforcing bar

DPC

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
67 150mm x 20M Damp proof course M 1.78 2.07 1.78 Include wastage when calculating DPC
68 200mm x 20M Damp proof course M 2.13 2.63 2.25 Include wastage when calculating DPC
97 250mm x 30M Damp proof course M 1.56 2.48 1.56 Include wastage when calculating DPC
98 300mm Damp proof course M 2.85 2.67 1.74 Include wastage when calculating DPC
99 500mm x 30M Damp proof course M 2.68     Include wastage when calculating DPC

Galvanised Nails

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
69 50x2.5mm nails, galvanised Kg 16.90 19.96 17.80 Include wastage when calculating nails
70 75x3.15mm Nails, galvanised Kg 13.33 13.99 19.96 Include wastage when calculating nails
71 100x4mm Nails, galvanised Kg 11.94 14.98 11.19 Include wastage when calculating nails
72 30x3.15mm Nails, Lumberlok, galvanised Kg 17.50 21.00 17.56 Include wastage when calculating nails
77 75x3.15mm Decking nails, galvanised Kg 15.75 24.99 25.49 Include wastage when calculating nails

Stainless Steel Nails

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
73 50x2.8mm Nails, SS316 Kg 71.18 73.96 73.96 Include wastage when calculating nails
74 75x3.15mm Nails, SS304 min. Kg 71.18 59.80 51.67 Include wastage when calculating nails
75 100x4mm Nails, SS316 Kg 71.18 63.01 62.50 Include wastage when calculating nails
76 30x3.15mm Nails, Lumberlok, stainless steel Kg 75.41 93.98 87.96 Include wastage when calculating nails
78 75x3.15mm Decking nails, SS316 Kg 64.00 63.01 62.50 Include wastage when calculating nails

Decking Screws

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
79 10Gx65mm Decking screw, SS304 min. grade EA 0.15 0.15 0.33  

Structural Brackets

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
80 Bowmac B45 L bracket, hot dip galvanised EA 25.97   26.00  
81 Bowmac BS45 L bracket, stainless steel EA 62.93   62.98  
82 Bowmac B35 T bracket, hot dip galvanised EA 26.82   26.87  
83 Bowmac BS35 T bracket, stainless steel strap EA 61.52 66.99 61.57  
86 Bowmac BS75 stainless steel strap EA 37.93 42.99 37.98  
87 Lumberlok 47x120mm joist hanger, stainless steel EA 7.93   8.98  
88 Lumberlok joist hanger 47x120mm, galvanised EA 3.09 6.29 5.78  

Nail Plates

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
84 Lumberlok sheet brace strap 300mm, galvanised EA 1.63   1.78  
85 Lumberlok sheet brace strap 200mm, stainless steel EA 3.55 4.69    
91 102x180mm Nailplate, galvanised EA 4.23   4.28  
92 110x200mm Nailon plate, stainless steel EA 11.45   11.78  
93 160mm Ceiling tie, left hand, stainless steel EA 2.85   3.10  
94 160mm Ceiling tie, right hand, stainless steel EA 2.85   3.10  
95 200mm Ceiling tie, left hand, stainless steel EA 3.28   3.48  
96 200mm Ceiling tie, right hand, stainless steel EA 3.28   3.48  

Stainless Steel Handrail

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
100 38mm Stainless Steel Tube M       40.11 From Grand Glass & Hardware. Please click on product price for more information
101 38mm Stainless Steel End Cap EA       14.00 From Sticky Flanges. Please click on product price for more information (select 38.1mm diameter option)
102 38mm Handrail Support, Stainless Steel EA       31.28 From Wood Lynn. Please click on product price for more information

Miscellaneous

Ref #Description Unit Price from Bunnings Price from Placemakers Price from Mitre10 Price from Others Comments
90 M12x50mm EPDM Square washer EA   1.79    

Please note:

  • For more information from a vendor, please click on the link on the prices (except concrete).
  • POA = Price on application
  • The prices listed above may not be direct comparisons. i.e. Stainless steel fasteners may be of different grades, but are of a minimum grade of SS304.
  • Many of the products are available from the venders in a quantity per length, and are specified in this table as a cost of per metre. Please note that many of these products may not be sold on a metre basis.
  • Many of the products are available from the venders in a set quantity (e.g. nails), and are specified in this table as a cost of per Kg, but are available in a quantity getter than 1Kg. Please note that this cost may be higher as you will have left over procducts.
  • Please allow for delivery when calculating costs, this table does not include delivery costs.
  • This table does not take into account of the regional availability of materials in differing locations.
  • Timber is normally specified per metre on this table. Please ensure that the length is available for your requirements.
  • Whilst the greatest care has been taken to ensure the accuracy of this information, prices do change and mistakes, though seldom do occur.
  • All prices are in New Zealand dollars and include GST (goods and services tax), though some of the product pages this website links to, do not include GST.

Material prices last updated: Sunday 2 November 2025

Disclaimer: Whilst this website contains a lot 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.



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