I 101% not property agent.
Using High Park Residences as an example
The median psf of 3-bedroom is about $915 psf while 4-bedroom is about $880 psf.
Median means 50% of the 3-bedroom is less than $915 psf and 50% of the 3-bedroom is more than $915 psf ...
Source:
http://www.propertyguru.com.sg/new-project-launch/reviews/high-park-residences-review-111264
Typically, new ECs should be priced about 20% cheaper than comparable private condos given the various restrictions of new ECs and the lower land cost for new ECs.
Applying a 20% discount, one should be able to determine the median psf of new ECs.
One may argue whether High Park Residences is a good benchmark.
I chose it because:
It was the last private condo launched in Sengkang
It has 3-room and 4-room units available
It is next to a LRT and has 118 facilities
Hope it will give yet another perspective on what should be a reasonable price for new ECs.
Ultimately, potential buyers have to judge whether it is a good buy or not, whether new ECs or private condos.