Clementi Avenue 4 which is in D05 Section is very good area.
there is a HDB for Sale & here are the few details
S$ 330,000 Guide Price | Studio | 2 baths | HDB Type 3NG (New
Generation)
721 sqft / 67 sqm | S$ 457.70 psf (built-in)
http://www.propertyguru.com.sg/hdb