OK... the last several of these that I've done have been too easy.  So I'm hoping this one will be more of a challenge.

I refuse to endanger the lives of my children in a house with less than four bathrooms.

Remember, no Googling allowed.  Good luck.

Winner:  OK, that was way too quick... but congratulations again to Keith Conrad who correctly guessed Mr. Blandings Builds His Dream House.  Here are a few other choice quotes from the movie:

Betsy Blandings: Ms. Stellwagon has assigned each of us to take a classified ad and write a human-interest theme about it. I found one typical of the disintegration of our present society.
Jim Blandings: I wasn't aware of the fact that our society *was* disintegrating.
Betsy Blandings: I wouldn't expect you to be, Father. Ms. Stellwagon says that middle class people like us are all too prone to overlook ...
Jim Blandings: Muriel, I know this is asking a lot, but just one morning I would like to sit down and have breakfast without social significance.
Muriel Blandings: Jim, you really must take more interest in your children's education.
Joan: Can't squeeze blood from a turnip.

Jim Blandings: That's fine. For the rest of my life, I'll have to get up at 5 in the morning to catch the 6:15 train to get to my office at 8. It doesn't even open until 9, and I never get there until 10!
Muriel Blandings: Well, maybe if you start earlier, you can leave the office earlier.
Jim Blandings: To get home earlier, to get to bed earlier, to get up earlier, I suppose.
Bill Cole: Maybe you can get the railroad to push the train up to 4:15. Then you won't have to go to bed at all.

Jim Blandings: Nothing, Mary. Just a private joke between me and whoever my analyst is going to be.