Despite being involved in years of costly legal tussles over claims they were overcharged, they will be given just 12 weeks to pay bills they feel have already been inflated.
If they do not pay in full, Edinburgh City Council will charge them 8% interest on top of their repair bills - many of which have been disputed, with hundreds of cases remaining unresolved.
The bills relate to statutory repairs that have been carried out on buildings, including work on drainage, roof defects and pipework.
One resident, Julie Stuart, of Commercial Street, Leith, faces an additional charge of £5600 if she pays her £70,000 bill over a little more than a year.
She and partner Jeremy Pascoe are still waiting to receive their final invoice for work, which started back in 2004, to their home.
Ms Stuart said the 8% interest charge could affect others in the block, where the bill ended up at over £1 million in total.
She said residents were already faced with paying too much after years of problems. "I do begin to think it is never gong to end."
She said the building work had not gone plan and was only now being completed.
The property was served with a statutory repairs notice to make stonework safe at an original estimate of £300,000, to be divided up between 15 neighbours.
The council said the charge was standard practice and it would not waive the extra fee.
SNP councillor Stefan Tymkewycz first raised concerns over the property scandal, and has a dossier of complaints from families, businesses and community ventures who believe they have been treated unfairly.
He said yesterday: "It is clearly unfair of the council to be billing people with that amount of money and expect them to pay within three months, and then put another charge of 8% on if they don't."
Gordon Murdie, an Edinburgh surveyor who has campaigned on behalf of a number of residents and firms who believe they were overcharged, said: "One person I am dealing with said the council offered him the 8% interest as if it was as good deal.
"The resolution process is not working and people are still convinced they have been overcharged.
"The property repairs system was already a costly one for many people."
A Lothian and Borders Police investigation into the housing repairs service found no criminality, but was critical of practices the council operated and has since halted.
The council paid contractors to carry out emergency repairs and claimed back the cash from homeowners and firms.
It then charged an extra 15% of the bill in administration fees.
Although the police fraud squad probe found no criminality, officers discovered a significant number of staff members from the now disbanded property conservation department had accepted hospitality from contractors.
This included tickets for football matches, horse-racing meetings and rounds of golf.
Five workers were sacked and two are understood to still be suspended.
A council spokesman said: "The council intervenes at owners' request where repairs are necessary and the owners cannot agree on how to take them forward.
"Owners are aware that these bills will have been coming and are able to make their own arrangements to meet the cost of the repairs to their properties.
"The interest charge is standard practice for the council and is legally tied to a rate set by the Sheriff Court."
The spokesman said the interest rate was the same that would be prescribed by the sheriff court had the council raised an action to recover monies due in the court.