have you checked LCS utopia..i don't know if there are availablities. check them out. even visalakshi enclave phase ii. i would go for a 32/50 block apartmentss rather than 100's.. there is not guarantee that there will be small garden/walking space..so do your sutdy. there is lancors new project called corner stone a bit pricey but nanganallur itself have jumped beyond comparison inspite of the water shortage..these days most of the roads are a pleasure to drive..a 2bhk costs 95lacs..though.. I would look at places closer to hospitals and markets. i think there are two other porjects on the velachery-tambaram road...one by ruby builders, tall concete structure..i don't think you will get lot of walking space.