Browse Forums Building A New House Re: KDR site costs 5Jun 26, 2020 1:32 pm I'm new too Have purchased but waiting on settlement so just ahead of you. Demo - I budgeted $20k based on what it cost my friend, except that he had a septic tank on the block and mine has double the amount of trees. The quotes came in about $18k. Things to look out for are asbestos in house/fencing, old lead pipes (impact soil), slabs (cost more to demo), trees/vegetation, service connections. Feature and contour survey - Quotes came in around $900 but every builder I've talked to said they can't give me a figure for site costs without this. Soil survey - I'd been looking in the area for a while so had been talking to developers/people who had subdivided and sold the land so wasn't too worried about this one, most of the builders I've spoken to have built in the area so had a rough idea of the soil profile. You could probably arrange one with the real estate agent pre-settlement if the house is vacant. I recently did an enquiry on Dial before you dig (it's free) as I'm doing a demo and it shows you the map of services/assets (water/sewerage, electricity, gas etc). These will also impact your site costs, if it's an old house will probably still be overhead power, you'll need to pay for a green dome to convert to underground. If there's an easement on the land it changes the way you can build (if you do build over it you'll need piers (?)). If there's a high pressure gas line within 15m you have to get permission. I had a guy from a project builder offer to come out and do a feasibility study (I didn't take him up on it but if you wanted some expert help I guess, keeping in mind they are salesmen). Also keep in mind shape of block, orientation, contour (I just looked on the council map and the change in elevation was minimal enough, I also stood in the corners of the land and guesstimated the slope, be wary of giant weeds in the corner they might cover an unexpected dip), trees on council land, condition of fencing, overhead power lines. I'm in WA so I'll have to put in soakwells (for stormwater) but I'd have to anyway if it was a vacant lot. Hope this helps. See if any of the builders are willing to fix site costs, I don't know what it's like in NSW but doesn't hurt to ask. Re: KDR site costs 7Jun 28, 2020 6:39 pm GrahamB acaboi I'm new to the world of knockdown and rebuild. Can someone help me understand what are the site costs involved in a KDR? Also, what can one do to avoid expensive surprises? Based on the little information I have, couple of questions - 1. Can I arrange for soil test before purchasing the property? 2. If the existing house is on slab, doesn't that rule out the chances of running into big rocks etc post the knockdown? Normally a soil test can not be done if you don't own the property, but most KDR sites will normally come back as H1 I can understand how a KDR will result in a P site classification but how can a KDR change a soil type to be highly reactive. Re: KDR site costs 8Jun 28, 2020 8:58 pm theshack GrahamB acaboi I'm new to the world of knockdown and rebuild. Can someone help me understand what are the site costs involved in a KDR? Also, what can one do to avoid expensive surprises? Based on the little information I have, couple of questions - 1. Can I arrange for soil test before purchasing the property? 2. If the existing house is on slab, doesn't that rule out the chances of running into big rocks etc post the knockdown? Normally a soil test can not be done if you don't own the property, but most KDR sites will normally come back as H1 I can understand how a KDR will result in a P site classification but how can a KDR change a soil type to be highly reactive. It doesn't, in my experience providing prices for over 2000 homes over the years, most KDR classifications in the Sydney region come back as H Class We were lucky in that our old house was so small (86 square metres) compared to the new house, they were able to take enough readings around the old backyard house before… 8 37143 I am not sure whether Perth has its own way of doing things in regards to this. Most of Perth has class A (sandy soil), except for some areas near rivers or hills. 2 13100 Is anyone building with Mojo and have a recent site cost tender 0 15952 |