Five people appealed to a government tribunal over high rents last year - and, of those, only one had their rent reduced.
The figures were revealed in the House of Keys this week by the Policy and Reform Minister Chris Thomas.
He faced questions from Ramsey MHK Lawrie Hooper who wanted to know what the government would do to control high rents, particularly in poorly-maintained flats.
Mr Thomas said the Island already has a rent and rating appeal commission set up under 70-year-old laws but claimed few people use it:
Four-month closure planned for Peel Prom
Drop-in session on southern 20mph zones today
DOI reminds people to stay away from Storm Bram cleanup
Ewe better watch out - storm rips into farm's Xmas experience
Noble's overcrowding means audiology drop-in suspended
Government wants permanent paving around TT VIP area
Delays to buses this morning
Changes to 1st time buyers schemes planned