Hey there as your son score is average he can go for the following college -

1. Dr. DY college of architecture, pune

2. Singhad college of architecture, pune

3. Rizvi college of architecture, mumbai

4. Amity university, mumbai

5. PES university, banglore

6. CmR university, banglore

7. BGS school of architecture and planning, banglore

8. Dayananda sagar academy of technology and management, banglore

9. RNS Institute of Technology, banglore

All the best!!