Lotus, a 79-staff grounds upkeep firm, sailed through its ISO 9001 and ISO 14001 tests and is hoping to bump up turnover to £6m next year with contract wins.
Lotus, based near Fleet in Hampshire, makes £3.5m from grounds upkeep for Spelthorne Borough Council, housing associations and a nearby hotel.
Operations director Alan Williams said contracts range from £30,000 for a housing association to ones for well over £1m for local authorities.
"We hope to take on a couple of major contracts within the next year on top of smaller jobs," said Williams, who works with managing director Richard Jones.
Lotus Landscapes had to prove good practice and keep records across all areas of business, from sales data to minimising eco impact from trucks.