The first houses at the Vicarage Road development have gone on sale at £390,000.
The 90-home development in Llangollen was the subject of controversy after developers initially proposed building just four houses defined as affordable.
However, the development was given the go-ahead after developers agreed to increase the number of affordable houses on the plot.
The first plot of land is Plot 1, a five-bedroom detached family home and has been put on the market for £390,000
Plaid Cymru's group leader on Denbighshire Council Cllr Arwel Roberts believes the controversy over the amount of affordable housing shows the need for the council to re-start the building of council houses.
Cllr Roberts said: “We have consistently called for more affordable housing, not only in Llangollen but throughout Denbighshire. We don’t want to stop development, but we would like to see development that is sensitive to the local community and which meets demand instead of creating a demand.
“Rightmove notes that the vast majority of houses bought in Llangollen last year were terraced houses and the average price was £128,000. Furthermore the average weekly household income for the Llangollen area is £500 a week.
“As a consequence, it’s clear that there is little local demand for such expensive executive homes. There are families in Llangollen crying out for affordable family homes, but they are being priced out of the market.
“We spoke up to increase the number of affordable homes, but were frustrated by the council’s inability to do this. This is why we are saying that Denbighshire Council should start building council houses once again.
"The council is here to serve the people and they are demanding good-quality affordable housing. We should respect that and look at what we as a council can do."
Two of the houses on-site are already under offer.
According to Llangollen estate agents Wingetts: “The ’Vyrnwy’ at 2,042 sq ft is a substantial five-bedroom family home, comprising ground floor cloakroom and toilet, family room, large family lounge, dining room, kitchen, utility and entrance hall with central staircase leading to the first floor, which features (a) master bedroom with dressing area and en suite, (a) guest bedroom with en suite, three further double bedrooms and a family bathroom comprising bath and separate shower cubicle.
“Externally the Vyrnwy benefits from a block paved drive containing four parking spaces and leading to a double detached garage, gated access then leads to the rear garden which features a series of mature trees on the boundary.”