Humble apologies, i multiplied your monthly rent by 52 NOT 12, huge error on my part, tired, no excuses.
As you said you owned, 10 houses, a mix of interest only and owned out right, i suggested a net overall of £500 per month per property, so £60k.
But the point still stands, with 10 properties you are getting a substantial amount of money, gas certs are around £80 per year, you wont be repairing cookers every month and electricity checks are every 10 years.
Then there is the growth in house values too.
Please don't kick out your tenants, i ve seen exactly what that is currently doing to a friend, its awful, her hair is falling out with the stress as she faces homelessness.
Aside, the EPC changes are bonkers, quite why someone in rented accommodation should get a better rated EPC than most owner occupiers is beyond me, EPC D would be reasonable, for smaller 1 or 2 property LLs, they will simply sell or pass the costs on to the tenant.