This is our main stream of work environmental cleans, we carry this out for Housing ass, Insurance, Councils and Public health and the price varies between the clients that we work for, Insurance normally being the higher pay out, but as an average run for a 1 bedroom property over this side of the water in wales we would charge in the region of £600 for the clean for 3 cleaners per day and £150 per van load of waste (transit size van) this would normally take a day and half at an average cost of £1050 this is priced on regular contracts, as i said insurance r one off every so often and you can add an extra £500 on to the bill
one thing i would caution u any fumigation spray that is sprayed down prior to u cleaning/clearing the property is considered saftely applied once u start lifting the carpets and furniture u'r coming into direct close contact with the pesticide long term effects of this can b quite dangerous, we never have propertys fumigated before we clear them for the above reasons, a few flee bites r all part of the job, as said above overalls and boots as well as masks and gloves, any how a property that has been fumigated will only kill the initial flees, vibration and heat will activacate the rest of the flee cycle thats y a good fumigator perfers to carry out his work after we've been in and not before, although we do spray through with a strong disinfectant before work comences such as activ8.
Good luck