John Brown, a 68-year-old Vietnam vet and former firefighter, is happy in his one-bedroom unit in Bayview; it’s small but comfortable, clean and tidy. He’s at risk of losing his home. It’s an odd situation: Brown has no problem paying the rent, he’s not violating his lease, he gets along fine with his landlord, there’s no Ellis Act or Owner Move-in taking place. The building hasn’t been sold. He’s facing eviction because his apartment was built illegally – and now the city is cracking down. The tenants are appealing the demolitions to the Planning Commission, which will hear the case Thursday, July 27.