They claim that the once thriving area for tourist gift shops and restaurants is being ignored as town shifts closer to the sea.
Their plea for help comes after a fifth shop along the pedestrianised area recently closed and now stands boarded up.
There are plans to develop the corner opposite the Olive Branch restaurant into an office block.
This, say developers, will bring around 200 employees into the area and with them will come business for the stores.
But traders argue that although there are many eateries in Colomberie, the other businesses will suffer.
They say the area has looked unsightly all summer and they fear that as more businesses close, because of the dying tourist trade, they will be replaced by office blocks.
Ian Renouf, owner of I&S Mobiles, said: ‘I can’t believe the state that it’s in.
There’s nothing we can do about the office block either as it’s all part of the States plan to shift town towards the waterfront.’