A number of businesses say long-running roadworks are keeping customers away.
The installation of speed bumps and a zebra crossing on Romilly Crescent has been going on for five weeks and will continue for another month.
Nearby businesses said they have not been consulted properly on how disruptive the work would be.
Cardiff Council said the work is essential to make the area safer for pedestrians.
David Bullimore the owner Bully’s restaurant which is located on Romilly Crescent said;
“It’s definitely having an affect on our lunch business, yesterday we had no one coming in because the builders were parked outside tarmacking the road.”
Mr Bullimore said he wasn’t told by Cardiff Council about the extent of the work.
A neighbouring business owner, Jan Williams who runs Betti Biggs, said her business has also felt the effect.
“The lack of parking means no one can stop and pop in, there’s talk of allowing people to park in permit holders spaces during the day, I think that should be looked at.”
Cardiff Council said the work is essential to make the area safer for pedestrians and for the children at a local primary school.
The council expects the work to be completed on time.