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Dear experts, i was being quoted for a major a&a via a direct builder (no external archi, but they have in house archi) for an existing 3 storey and an addition of an attic. there is no rebuilt as we trying to avoid that. there is no change of # of rooms. we did req for an addition ensuite toilet for master and walk in closet. on first look, it looks on the high side. so want to know from you guys which of these big item cost is off grid or optional. thanks alot! 1. Authorities fees : URA $ 6.5k BCA $ 2k Submission by Architect & PE $ 35k 2. prelim works (incl pest control, pre con survey, rto fees, temp toilets, topo survey cost etc) : $65k 3. demolition and excavation : 30k 4. anti termite 2.5k 5. rc sub structure and super structure : ~ 80k 6. steel works ~50k 7. internal and ext wall 30k 8. metal roof 20k 9. waterproofing 7k 10. wall finishes 100k 11. floor finishes 80k 12. ceiling finishes 20k 13. doors, windows, panels 50k 14. external works (walls, gate, drain) 20k 15. m&e 115k this all excludes carpentry and sanitary fitings. adds up to 713k, thanks alot

many builders have "in-house" architects who are registered architects who will sign the plans and do submissions for a fee. it doesn't mean the architect is working for the builder but rather on a free-lance or project basis. do note that in case of issues, you know which side the architect is on as the architect is not hired by you. URA fees for reconstruction is $6000 plus GST = $6420 in case you want to know the exact amount. since you adding another storey (attic) it would be classified as reconstruction and not A&A. prelim looks fair anti-termite looks fair. check how many years warranty is being provided. not sure what addition structure is being proposed but steel does look abit high if the steel works is just for the new roof internal and external wall looks fair. but if you want to cut cost, don't do external wall. just do fencing instead. can save you some $$$ and also improve air flow metal roof looks fair. but check what type of roof is being proposed. if using metal roof from Bluescope Lysaght then sounds ok. make sure all the essential waterproofing and substrates are proposed and done properly as metal roof have multiple layers to provide insulation and water proofing water proofing looks a bit high. but i'm not sure how many areas (balcony, roof terrace, toilets) you need to do. check what brand of water proofing material is being proposed. wall finishes include what? plastering? tiling? painting? floor finishes using what type of material? marble? homogenous tiles? engineered wood? parquet? doors, windows, panels look fair. do check and make sure that all door frames are redone and not reused from existing house external works look fair. but ask for more detail on what is being done. also is external wall works quoted 2 times? M&E includes what? full aircon whole house? have ducted aircon? whole house rewired with new wiring and network points? whole house plumbing redone? if the quote is before GST, do add in the 7% GST for the actual amount. carpentry and sanitary could add on another 70K to 100k depending on how extensive you want your carpentry and what brand of fittings you choose. a toilet bowl can range from below $200 to more than $1000 depending on the brand and technology. at 700+k, topping up another 20% to 30% of budget could actually be enough for rebuilt of an entire new house.