Browse Forums Building Standards; Getting It Right! Re: How to maximise r30 zone? 3Sep 03, 2022 9:33 am There 3 levels to check WA State , local council and developers guides Start with The WA Design codes Dig around for the accompanying notes/guides and check lists. goodluck Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: How to maximise r30 zone? 4Sep 03, 2022 12:15 pm Nads123 Hello everyone, with the ruling of distance from wall to wall etc...for a 338sqm land what is the minimum distances from surroundings and requirements so that we can maximise the building? Hi Nads123 As a rule of thumb R30 has open space of 45% of the lot. That means that you can build roughly a 186m² dwelling on that lot. You need a 24m² outdoor living off a living area. If your alfresco is open on 2 sides and is less than 34m² it can count towards your open space. Front setback is 4m. You have a 1m setback from non habitable windows and 1.5 from habitable windows. You can build zero lot for a certain distance. Councils vary in their application and insistance of these guidelines. Some allow some variation others are sticklers for them. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: How to maximise r30 zone? 5Sep 03, 2022 12:37 pm chippy Nads123 Hello everyone, with the ruling of distance from wall to wall etc...for a 338sqm land what is the minimum distances from surroundings and requirements so that we can maximise the building? Hi Nads123 As a rule of thumb R30 has open space of 45% of the lot. That means that you can build roughly a 186m² dwelling on that lot. You need a 24m² outdoor living off a living area. If your alfresco is open on 2 sides and is less than 34m² it can count towards your open space. Front setback is 4m. You have a 1m setback from non habitable windows and 1.5 from habitable windows. You can build zero lot for a certain distance. Councils vary in their application and insistance of these guidelines. Some allow some variation others are sticklers for them. Thanks for the reply, exactly what I was searching, if the kitchen is its own room and not an open plan one will it be considered a non habitable room and can be wall to wall if no Windows are present? Thinking of alfresco/garden in the middle with kitchen facing it so no need for Windows on border side. Also anyone have a list of what are considered as habitable and non habitable rooms? I wanted to make sure I am designing accordingly then bring it to the expert so not much will need to be changed. Regarding zero lot, does it mean able to build wall to wall? Re: How to maximise r30 zone? 6Sep 03, 2022 12:39 pm StructuralBIMGuy There 3 levels to check WA State , local council and developers guides Start with The WA Design codes Dig around for the accompanying notes/guides and check lists. goodluck Thanks for the info 👍🏼 will check it out Re: How to maximise r30 zone? 7Sep 03, 2022 12:53 pm From the Rcodes: A Habitable room is a bedroom, living room, lounge room, music room, sitting room, television room, kitchen, dining room, sewing room, study, playroom, sunroom, gymnasium, fully enclosed swimming pool or patio; The distance from the boundary relates to openings. If the wall has no openings you can build to the boundary as zero lot. Zero lot is built to the boundary. Typically you can only build on one boundary but again if you can get neighbour approval you can sometimes get around this. We have built on both side boundaries of a 10m lot. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: How to maximise r30 zone? 8Sep 03, 2022 1:18 pm chippy From the Rcodes: A Habitable room is a bedroom, living room, lounge room, music room, sitting room, television room, kitchen, dining room, sewing room, study, playroom, sunroom, gymnasium, fully enclosed swimming pool or patio; The distance from the boundary relates to openings. If the wall has no openings you can build to the boundary as zero lot. Zero lot is built to the boundary. Typically you can only build on one boundary but again if you can get neighbour approval you can sometimes get around this. We have built on both side boundaries of a 10m lot. I see! So if no Windows we can build wall to wall on one side! Awesome! Is it also correct for the ruling of 2/3 wall to wall on one side and 1/3 wall to wall on another? Re: How to maximise r30 zone? 9Sep 03, 2022 2:03 pm Not necessarily. Again from the Rcodes: Walls may be built up to a lot boundary behind the street setback (specified in Table 1 and in accordance with clauses 5.1.2, 5.2.1 and 5.2.2), within the following limits and subject to the overshadowing provisions of clause 5.4.2 and Figure Series 11: i. where the wall abuts an existing or simultaneously constructed wall of similar or greater dimension; ii. in areas coded R20 and R25, walls not higher than 3.5m with an average of 3m or less, up to a maximum length of the greater of 9m or one-third the length of the balance of the lot boundary behind the front setback, to one side boundary only; iii. in areas coded R30 and higher, walls not higher than 3.5m with an average of 3m or less, for two-thirds the length of the balance of the lot boundary behind the front setback, to one side boundary only; or iv. where both the subject site and the affected adjoining site are created in a plan of subdivision submitted concurrently with the development application. So when we built, our garage wall abuts the neighbours garage wall on one side and then further back on the other side we have a long zero lot wall but we attained our neighbours approval for that. My suggestion is to go and look at some small lot display homes and also google designs being used by builders in WA on small lots. That will give you an idea of the sorts of things that are possible. Once you have got some hints then take the bits you like and see if you can massage them into a sensible design that works for you. When it comes to a small lot it's even more important to get a good designer that is full bottle on the RCodes and knows what your particular council will and won't allow within those parameters. It's not like just picking a design and dumping it on the block, you really need to work to maximise the design to make the most of the space you have. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: How to maximise r30 zone? 10Sep 04, 2022 9:52 am chippy Not necessarily. Again from the Rcodes: Walls may be built up to a lot boundary behind the street setback (specified in Table 1 and in accordance with clauses 5.1.2, 5.2.1 and 5.2.2), within the following limits and subject to the overshadowing provisions of clause 5.4.2 and Figure Series 11: i. where the wall abuts an existing or simultaneously constructed wall of similar or greater dimension; ii. in areas coded R20 and R25, walls not higher than 3.5m with an average of 3m or less, up to a maximum length of the greater of 9m or one-third the length of the balance of the lot boundary behind the front setback, to one side boundary only; iii. in areas coded R30 and higher, walls not higher than 3.5m with an average of 3m or less, for two-thirds the length of the balance of the lot boundary behind the front setback, to one side boundary only; or iv. where both the subject site and the affected adjoining site are created in a plan of subdivision submitted concurrently with the development application. So when we built, our garage wall abuts the neighbours garage wall on one side and then further back on the other side we have a long zero lot wall but we attained our neighbours approval for that. My suggestion is to go and look at some small lot display homes and also google designs being used by builders in WA on small lots. That will give you an idea of the sorts of things that are possible. Once you have got some hints then take the bits you like and see if you can massage them into a sensible design that works for you. When it comes to a small lot it's even more important to get a good designer that is full bottle on the RCodes and knows what your particular council will and won't allow within those parameters. It's not like just picking a design and dumping it on the block, you really need to work to maximise the design to make the most of the space you have. Thank you so much for the reply, will do that 👍🏼 Yes it had a house on it. 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