Depart from Paris by West
Take the motorway, heading 'Dreux'
Then head 'L'Aigle'
Finally, go to 'La Ferté-Fresnel', and turn left at the end of the village, heading 'Saint-Nicolas des Laitiers'.
You can park on the right at the end of 'Saint-Nicolas', on a parking near to a petanque field.
(Click on the picture to enlarge)
IGN map from 'L'Aigle' to 'Saint-Nicolas'
More detailed IGN map
Location of the house
Aerial sight