Cwrt Yr Eglwys in Canton was developed by Taff Housing Association in partnership with Cardiff City Council and Pendragon Construction.
The scheme consists of 16 one bedroom flats and four, three bedroom houses.
The Cabinet Secretary said the success of the scheme was a result of good partnership working.
Carl Sargeant said:
“I am always keen to visit schemes which have received Welsh Government funding, to see for myself the benefits our investment can bring to communities.
“I am pleased we have been able to support Taff Housing Association in this development with funding from the Social Housing Grant programme and the Smaller Properties programme. In 2016/17 we made available £4.2 million from the Social Housing Grant programme to support the delivery of affordable housing schemes in Cardiff which are either on site or about to start on site.
“Increasing the supply of homes in Wales remains a top priority for the Welsh Government, which is why we have pledged to deliver 20,000 affordable homes during this administration. I am committed to working with developers, housing associations and local authorities to bring forward schemes which will increase the supply of good quality affordable homes.”
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