Delegates at the Landscape Institute's housing conference agreed to lobby government to make sure the profession is given significance through the code.
Studio Engleback director and chartered landscape architect Luke Engleback said that practitioners must promote themselves in assisting developers to meet the code's highest standard, level six.
"I am sick to death of people thinking we are Charlie Dimmocks doing the colouring in," he said. "Landscape management is about the art of survival and we can hit very heavily above our own weight.
"The Code for Sustainable Homes is a bit too closed for a profession like ours and we need to get to the people writing these things."
The code has nine categories, which must all be met if level six is to be reached.
Engleback argued that while none of the categories specifically highlights landscape or green space, each can be met by landscape architecture practices.
For example, water use could be addressed through rainwater harvesting, health and well-being through edible landscapes and exercise in green spaces, and energy through micro-climate changes, such as building schemes facing south to capture solar energy.
The Code for Sustainable Homes became a mandatory national standard for design and construction of new homes in the spring. The latest guide comes into effect on 3 November.