The contract to design and install the hard and soft landscaping at the new Great West Quarter (GWQ) development in Brentford, west London, includes landscaped piazzas and green spaces.
Barratt Homes has also stumped up an extra £300,000 as a Section 106 agreement with Hounslow Council for improvements to neighbouring Carville Hall Park.
Scotscape managing director Angus Cunningham told HW the contract award had resulted from six months of working closely with the management team at Barratt Homes West London.
"We started on a tender process last year and they wanted to use us, but we did have to do some value engineering," said Cunningham.
"(Barratt) had a fundamental design and wanted things to look really good. The challenge facing all contractors is meeting their financial needs."
Despite having to redesign its scheme, the contract award is still set to provide solid work for Scotscape for the next two-and-a-half years, added Cunningham."It will give us cash flow," he explained.
The award is one of a number of housing contracts won by Scotscape. It has also been awarded a £550,000 landscaping contract at Imperial Wharf in Chelsea, as well as work at the Silkworks development in Lewisham, south-east London, and Battersea Reach.
"We are finding housing developments are still going because what was coming out of the ground had to be finished," said Cunningham. "We may have a rough period in two years but at the moment we are still picking up the work."
Scotscape has branched out into living walls and installed the world's largest last year at the new Westfield shopping centre in London.
It has another living wall planned for next month at the NEC in Birmingham, and completed one at the RHS Chelsea Flower Show last week for designer Paul Hensey's Fenchurch Garden, which picked up the Most Creative Award.