B.Arch

Some best colleges for B.Arch is listed below:
*Sushant school of art and architecture
*Manav Rachna International Institute of Research and studies
*Ansal University
*Lingaya's University
*Amity University
*RP inderaprastha Institute of Technology
*O. P Jindal Global University
*KR Mangalam University
*GD Goenka University.

Yes, you can try for seats in Private self-financing colleges like Acharya, Alliance, RV, MSRIT, Oxford, etc.

No, you need to qualify NATA to get admission in this college for architecture.

We can not say approximate score for admission in this college. Admission is through Chandigarh Engineering and Architecture Counselling based on rank obtained in JEE Mains Paper-2. Visit the link below for more information
https://www.shiksha.com/college/Chandigarh-college-of-architecture-3568/admission.

Hello,
I hope you are doing well. Below is the list of cutoff for home state and other state for all categories to get admission in NIT Hamirpur.
General - HS - 1746 to 5577 and OS - 920 TO 1483
OBC - HS - 2439 to 6033 and OS - 446 to 611
SC - OS - 197 to 253 and HS - 301 to 556
ST - OS - 91 to 91 and HS - 118 TO 157 .
If your rank satisfies here, then you will get admission.

I would suggest you to try for the top NIT's in the order: Trichy, Rourkela, Nagpur, Jaipur, Bhopal, Patna and Hamirpur. You'll definitely get into top 5 of these. Also, try for the SPAs as well: SPA Vijayawada, Delhi and Bhopal.
Best of luck.

Sorry, you need at least 215 marks to be able to get into MNIT, Jaipur, B.Arch courses. Moreover, you still have minute chances if you add home state quota with it. Kindly go for NIT- Kozhikode, NIT-Calicut and NIT-Bhopal which you are likely to get with these marks.
Best of luck.

As there are various colleges of B.Arch but most of the colleges accept NATA. So, please visit the link given below to find out the best colleges based upon the JEE rank of your son:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6919840.

Yes, it depends upon the colleges' criteria. If the college allowed you, then you will do it. After all, if you did not get a seat in B.Tech, then you will apply for B.Arch in counselling procedures. As it is depending upon the counselling, the college will tell you that you should apply in this field based upon your counselling rank.

Hey buddy you can use this link to find out which colleges you can get from these marks. This is shiksha's official college predictor tool based on previous years data.
Hope this helps. All the best.
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india