i think that house aged 30 years or above, owner hardly have floor plan on hand

Oh, one issue if buying a subsale landed house is when the previous owner doing illegal exterior renovation that
may exceed the building setback line....which will be troublesome when you want to apply for a proper new renovation extension
works...if changes on the interior of a house is still passable... as long not affecting the building façade/ outlook

cheers mate,
izwan
www.archidstudio.com

Good day mate

Pricing depends on which type of house you purchased

A) terrace , semi-d , bungalow ?
B) single or double / triple storey house
C) purpose idea of extension - only on ground floor ? Or both upper floor as well …. If only ground floor does not required structure engineer P.E endorsement complete with structure design , and structure design calculation and reports .. which basically will add additional cost .
D) if got original plan / S&P plan - we could just scan and trace it - reduce of pricing compared to go and do measured drawings.
E) got CF cert with you ? If don’t have … then need to do cf search at majlis / council … if no result from them, then have to write a declaration and proceed with the commissioner of oath … got sometimes need to go to court / mahkamah kecil to declare in front of the judge … depends on situation…
F) got original land grant with you ? If not need to go to pejabat tanah (land office ) and search for the house land grant

All these needed to do submission… so if you got all these , then pricing would be cheaper ….if not …. Just standby ranging 5.5-7K
( not including payment directly to council ya ) example
1) payment of processing plan
2) payment of rental  row2 bin from their panel ( few trips only)
3) deposit payment ( WAng cagaran )

All in standby 9-10k …..

This is the proper way… got short cut way which I don’t ethically advise…
Hope that answer you question

Cheers mate
Izwan
Www.archidstudio.com

Excluding site measurement only Drafting  - 1.5 weeks if purely architecture drawings .. if required structure need to wait since the structure Engr need to overlap drawings taken from architecture drawings: add another 1 - 1.5week…

Once complete and if everything comply to the officer requirements then they will process 14days - 30days (working days) …. But normally always got some comments from the officer .. depending on which officer .. some of them can be reasonable , some don’t and insist to follow his/her comments…. Normally what we do is print draft copy and set an apointment with the officer for his/her initial comments… reduce the time for drawing amendments…

Total about 1.5month- 2 month

Hope this helps
Cheers mate
Izwan
Www.archidstudio.com