Kwik-Fit Insurance Services (KFIS) has been boosted by the strength of the UK property sector, with a 36% rise in sales of home insurance last year.
The company has also seen a 30% rise in its motor insurance book to 220,000 policyholders last year.
Premiums taken by KFIS have now risen from £2.5m in 2000 to £3.4m last year.
A KFIS spokesman said the broker now had 18 insurers on its panel compared with 12 one year ago.
Reports this week said 1,700 jobs at the garage chain were in danger, just two years after Ford bought the company from tycoon Sir Tom Farmer for £1.3bn.
But Kwik-Fit chief executive Farmer has so far denied any jobs are at risk.