Depending on the zoning of your property and the location of your development relative to nearby watercourse areas, in most circumstances a quick and simple planning assessment for your house addition and alterations can occur when they are designed within the following design guidelines. Please note that if you’re planning on extending your house and it is connected to Council’s CWMS, please read the following information on our CWMS page.
Ground-level additions or alterations:
- The alterations or additions will not result in the dwelling being located any closer to an existing primary street boundary than 4m (from the property boundary) or 2m closer than the minimum setback of the adjoining development, whichever measurement gives the greater setback
- With the inclusion of the additions or alterations, the dwelling will maintain the following minimum boundary setbacks (except for development within Residential Growth Policy Area 11 & Target Hill Policy Area 17):
- Where a wall for a proposed ground-level addition or alteration will abut a side boundary:
- It will not exceed 3m in height
- It will not exceed 8m in length
- When its length is added to the length of any other existing walls or structures located on that boundary:
- It will not result in all the walls or structures exceeding a length equal to 45% of the length of the boundary
- It will not be within 3m of any other relevant wall or structure abutting the boundary, unless on the adjoining property there is an existing wall or building adjacent to or abutting the proposed relevant wall or structure.
- The following private open space requirements will be maintained:
- There are no regulated trees on the site or on adjoining land that might be affected (including damage to tree roots) by the proposed development.
Second storey additions or alterations:
- The alterations or additions will not result in the dwelling being located:
- Nearer to an existing primary street boundary than 4m (from the property boundary) or 2m closer than the minimum setback of the adjoining development, whichever measurement gives the greater setback
- In front of the average setbacks of any existing dwellings on adjoining allotments with the same primary street frontage (or if there is only one such dwelling, the setback of that dwelling).
- The additions or alterations will comprise the following boundary setbacks:
- 0.9 mplus one-third of the remaining wall height above 3m from side boundaries.
- 5m from a rear allotment boundary (if the size of the allotment is less than 300m²
- 6m from a rear boundary of the allotment (if the size of the allotment is greater than 300m² ).
- The additions or alterations will result in the dwelling being:
- Less than 9m in total height when measured from natural ground level
- All wall heights being less than 6m when measured from natural ground level.
- The additions and alterations will not result in the unreasonable overshadowing of windows and/or outdoor entertaining areas of adjoining dwellings
- The additions and alterations will not include windows or balcony areas that provide direct views into windows and/or outdoor entertaining areas of adjoining dwellings.
In addition to the above, when considering the design of your dwelling alterations and/or additions, it is also important to ensure their external materials, finishes and colours are consistent with the existing dwelling.