Other options for you are:
If your employer is renting:
1) Ask the landlord - he/she may have a copy of the floor plan which usually is provided at the time of purchase
If your employer owns his/her home:
1) The floor plan is usually provided by the seller/realtor at the time of the purchase of the house
Please also note that any renovations done to the home are also provided by the company/person who has done the renovations.