Some authentic-estate traders looking for the next large issue are turning to tiny companies. A new breed of property firms is obtaining up properties occupied by fuel stations, doctors’ workplaces and corner grocery stores. They see an opening mainly because significant asset managers commonly prevent these properties, which they look at risky. Withco, a New York-centered landlord that symptoms lease-to-individual specials with small corporations, just lately elevated $30 million in undertaking funding from backers together with Founders Fund, Canaan Associates, Lennar Corp. , actor Will Smith and athletes Venus Williams and Kevin Durant. Keyway, also of New York, purchases health-related-office environment buildings from little enterprises and then leases them back. Earlier…