Browse Forums Building A New House Re: Overshadowing from Neighbours 3Jun 04, 2020 12:02 am Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: Overshadowing 18May 11, 2021 10:39 am Sparkyf And the annoying part is when you DO have overlooking, you only have to obscure the bedroom windows, NOT the bathroom windows! Streaker next door! Hi Sparkyf, I am a first homeowner, building a double storey house on a new estate. our land is facing a North east and settlement is in a few weeks. will i have an issue on overshadowing if my neighbor builds single storey? or double storey? is overshadowing a possible issue on lands facing east, south east and north east only? will having a building permit before your neighbor get an occupancy cert be the best solution? any input is appreciated. Re: Overshadowing 19May 12, 2021 9:05 am Your shadows are checked based on date of 22nd September, at 9am and 3pm. There is a brilliant app called suncalc (www.suncalc.org) where you can zoom into your street address, enter the date (22nd Sept) and enter the max height of your house. You can move the yellow slider at the top, and the black line will show your shadows, and tell you the length. Overshadowing is mostly on the south east and south west, so in your case there will be shadows to the back of the house (morning), and front right (afternoon). As an example, if your house is 8.5M (max), the shadow in the afternoon will be 11.7M, so if you have a tall house and narrow block, you can calculate or measure where the shadow will fall on the neighbour's yard. The regulations cover how much daylight is in their private open space: A14 and B21 Overshadowing of open space This standard protects existing private open space from overshadowing from new developments. Standard A14 and B21 Where sunlight to the secluded private open space of an existing dwelling is reduced, at least 75 per cent, or 40 square metres with minimum dimension of 3 metres, whichever is the lesser area, of the secluded private open space should receive a minimum of five hours of sunlight between 9 am and 3 pm on 22 September. If existing sunlight to the secluded private open space of an existing dwelling is less than the requirements of this standard, the amount of sunlight should not be further reduced. Overshadowing can occur regardless of block direction, if the house occupies a large percentage, and/or is very high. Ideally you would want the living area windows facing northerly, to get free warmth from the sun in winter, as an example. Our block faces southwest, so our dining and kitchen windows will get the northerly sun (and solar panels are also on the long side facing NW-NE). Even having the planning permit will help, as that will be passed by council, who take into consideration overlooking as well as overshadowing. We also exceeded the max height of 7.5M, but there is a building regulation that states if your block slopes more than 2.5 degrees then you can exceed that by up to 1M (we did, our block slopes 5 degrees)! www.suncalc.org Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Overshadowing rules: Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ [b]Complete document: https://www.planning.vic.gov.au/__data/ ... e-2015.pdf[/b] Ours: Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Overshadowing 20May 12, 2021 9:37 am Sparkyf Your shadows are checked based on date of 22nd September, at 9am and 3pm. There is a brilliant app called suncalc (www.suncalc.org) where you can zoom into your street address, enter the date (22nd Sept) and enter the max height of your house. You can move the yellow slider at the top, and the black line will show your shadows, and tell you the length. Overshadowing is mostly on the south east and south west, so in your case there will be shadows to the back of the house (morning), and front right (afternoon). As an example, if your house is 8.5M (max), the shadow in the afternoon will be 11.7M, so if you have a tall house and narrow block, you can calculate or measure where the shadow will fall on the neighbour's yard. The regulations cover how much daylight is in their private open space: A14 and B21 Overshadowing of open space This standard protects existing private open space from overshadowing from new developments. Standard A14 and B21 Where sunlight to the secluded private open space of an existing dwelling is reduced, at least 75 per cent, or 40 square metres with minimum dimension of 3 metres, whichever is the lesser area, of the secluded private open space should receive a minimum of five hours of sunlight between 9 am and 3 pm on 22 September. If existing sunlight to the secluded private open space of an existing dwelling is less than the requirements of this standard, the amount of sunlight should not be further reduced. Overshadowing can occur regardless of block direction, if the house occupies a large percentage, and/or is very high. Ideally you would want the living area windows facing northerly, to get free warmth from the sun in winter, as an example. Our block faces southwest, so our dining and kitchen windows will get the northerly sun (and solar panels are also on the long side facing NW-NE). Even having the planning permit will help, as that will be passed by council, who take into consideration overlooking as well as overshadowing. We also exceeded the max height of 7.5M, but there is a building regulation that states if your block slopes more than 2.5 degrees then you can exceed that by up to 1M (we did, our block slopes 5 degrees)! www.suncalc.org Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Overshadowing rules: Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ [b]Complete document: https://www.planning.vic.gov.au/__data/ ... e-2015.pdf[/b] Ours: Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Very well written and knowledge sharing Sparkyf . I would like to add couple of observations around the obscuring of the windows. As mentioned it depends upon the overlooking requirement and what I came to know also depends upon the building envelope/overlooking restrictions on that particular block. For example we are building double storey and have vacant lands on left and right. There is no issue of overlooking but still have to obscure the windows as the house is encroaching the overlooking envelope on that block of land which is like any window within 2m or so from the side boundary have to be obscured irrespective of the overlooking/overshadowing calculations. This is how the Building Surveyor explained to me when I challenged to get the obscure windows removed as there was no overlooking issue as side blocks being vacant. I am not based in Victoria however i had a quick look into your question to understand what you were asking. The way I read the regulations, overshadowing relates to the… 1 2576 Hi All, I would appreciate some assistance with issues around overshadowing. We are hoping to build a double storey in Wyndham (Victoria), on a west facing lot, with our… 0 16971 |