Lord Foulkes of Cumnock voiced his concern at the "apparent contempt" in Mr Harper's response.
Urban Realm highlighted the challenge posed to New Cumnock "from the Prince Charles-backed Knockroon development".
Lerwick is the most affordable area to set up home, followed by Cumnock in Ayrshire.
Labour former Scottish Minister Lord Foulkes of Cumnock argued that the bill had been "treated abominably" by the government.
The magazine said New Cumnock needed to "reassess a policy of managed decline which is in danger of becoming a self-sustaining prophecy".
An 18-year-old woman has been raped on the outskirts of New Cumnock.
Cowan, originally from St Andrews in Scotland, was arrested three days later at the home of another former jail mate, Alan Hornall, in New Cumnock, East Ayrshire.
"We have been following New Cumnock and the challenges they face for four years now, giving us a real sense of perspective on the challenges faced, " he said.
The session began with Labour's Sandra Osborne - the MP for Ayr, Carrick and Cumnock - using her debate to claim that 19% of the population in Scotland lived in poverty.
The issue was raised at First Minister's Question by SNP MSP Adam Ingram, who said hundreds of jobs and the wellbeing of communities in Cumnock and Doon Valley were dependent on SRG.
It has taken years for New Cumnock to get to this point and it will take years to put right but the sooner these issues are tackled the sooner they can be resolved.
Lord Foulkes of Cumnock complained that it was "a disgrace to Scotland" that important parts of the bill were being debated so late on a Thursday, when peers tend to go home early.
And a British Transport Police spokesman said a branch of a tree which had fallen onto the rail line near New Cumnock, Ayrshire, shattered the windscreen a freight train, showering the driver with glass.
Tory Lord Jopling said it was "a major constitutional change" and Labour's Lord Foulkes of Cumnock said it had "not be thought through" and questioned how extending the electoral register to include younger votes would be funded.
The Valuation Rolls show that The Right Honourable Arthur James Balfour of Whittinghame owned 235 properties in Scotland, in East Lothian and Berwickshire, while Keir Hardie owned just one property at Holmhead, in the parish of Old Cumnock.
After questions, Lord Foulkes of Cumnock cast doubt on whether the government had been sincere in its commitment not to use the Moses room - which is not wheelchair accessible - for grand committee consideration of the Welfare Reform Bill, which makes significant changes to disability benefits.
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