Subdivision Cost Calculator W.A.

If you are subdividing and plan to retain an existing house you will require parking for 2 cars unless you live on a major traffic route with buses e.g. Charles Street, North Perth.

If you must construct a hardstand for 2 vehicles and your current driveway is insufficient or needed to be removed to allow access to the new lot, you will generally construct a paved or concrete area with dimension of roughly (6m x 5m). The cost of this for a contractor will be between $2500 – $3000. The My Subdivision Calculator will allocate the higher amount in the final calculation as a worst-case scenario.

Earthworks and retaining are only required in specific situations. It is difficult to plan for this potential requirement at this early stage of your investigation.

We suggest potentially selecting this option if you are considering subdivision in any of the following areas or situations:

• Subdividing – City of Canning
• Subdividing – City of Armadale
• Subdividing – City of Gosnells
• Subdividing with steep sloping blocks which slope from left to right as you face your lot. Generally, this will apply to street facing blocks (or) corner blocks.
• Subdividing a block which slopes from rear fence to the road. If the slope from back to front is greater than 12% or in the range of 2-3m in height difference, you (maybe) required to retain between blocks. If you need to retain land then generally earthworks are required in the blocks either side of that retaining.
• NOTE: Each shire has a different approach to earthwork requirements so you may or may not have to do this during your subdivision, most of the time NOT.
• NOTE: If you are unsure on whether you need this and want to budget for a (potentially) worst case scenario then select the earthworks cost. Keep in mind any earthworks exercise is going to be expensive. The nominated amount by us of $20,000 would be probably the lowest cost you would pay for earthworks in any situation meaning your costs could be much higher potentially and depend on your block conditions.

Have you got a bitumen crossover connecting the main road to your driveway? This is council-owned as it is on council land.

During subdivision you are required to remove redundant (unused) crossovers. If any crossover is constructed out of bitumen it will need to be removed and possibly re-instated with a new concrete (or) paved crossover. If you need to re-instate a crossover the cost will be approximately $2500 through a concrete contractor.

If you are planning a rear lot subdivision and are required to remove a carport (for access), if that carport is attached to house by the main roofline, you will need to do remediation works to the side of that building to fix roofline, building face and gutters. The cost can really vary here depending on which building contractor you use.

The current building contractor that we recommend does this for a very competitive rate generally in the range of $6000-$8000. If you are simply dismantling a steel carport that was connected to the building to allow access, then this cost will generally have been captured in the (Partial DEMO) fee itemised in the final cost you receive.