There are 9 13-letter words that start with 'house'.
| housebreakers | housebreaking | 
| housecleaning | househusbands | 
| housekeepings | houselessness | 
| housepainters | housewarmings | 
| housewiferies | |
Note: These 9 13-letter words that start with 'house' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with houseb, housel, housew, housem, housec, housef, housep, housek, househ, houses, houser, housed, houseg, houset.
6-letter words start with 'house' (4)