The bottom part (soubassement) of my house is made of it. There's a lot of it in the region, and I am currently collecting it off nearby fields to make borders round my flower beds.

See http://www.proz.com/kudoz/850313

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Note added at 4 hrs (2007-03-17 21:47:51 GMT)
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Rkillings is right to a great extent. The (type of?) "pierre meulière" used for house building looks nothing like what we commonly accept as flint. So calling a "maison en meulière" a "flint house" IS like calling a drink composed essentially of sugar and water an "orange drink" or a pie composed essentially of potato and fat a "meat pie". But that's the way the world is.

Add to that the fact that "pierre meulière" is largely confined to a particular part of France, so that its exact equivalent is prob. unheard of in other places. On the other hand, flint is (or was) used for houses in other places (indeed, in my own, the external walls above the "meulière" part are flint embedded in mortar and rendered over). And "pierre meulière" IS a kind of flint, apparently, even if it doesn't look like it. So "flint house", while not necessarily as exact as "house built with pierre meulière stone", might be seen as a "cultural equivalent".

http://www.monanneeaucollege.com/minerauxpages/silex-meulier...

Par le terme « silex », on entend une famille plutôt nombreuse d’espèces minérales. Le constituant fondamental de ces roches est la silice. Beaucoup d’entre elles ont une origine purement minérale ; d’autres sont de nature organique. Le silex offre un certain nombre de variétés qui sont : le silex pyromaque ou pierre à fusil ; le silex corné ou hornstein; le silex noir ou phtanite, très commun dans le calcaire carbonifère ; le silex molaire ou meulière, développé dans le Bassin parisien ; le silex xyloïde ou bois silicifié.
http://pages.videotron.com/silex/mainframesilex.htm

Des bancs affleurants de pierre meulière (assimilable à une sorte de silex) furent également exploités dès le XIIe siècle sous diverses formes. ...
fr.wikipedia.org/wiki/Épernon –

Les meules de nos moulins mesuraient couramment 1,10 ou 1,20 mètre de diamètre, pour un poids de l'ordre de 250 kilogrammes. Elles étaient faites d'une variété particulière de meulière : le silex meulier. Les meilleures pierres venaient de la Brie et celles des carrières de La Ferté sous Jouarre étaient très appréciées.
http://32 32.cicv.fr/communes/champvou/pages/patrimoi.htm

Picture of " Meulière caverneuse" at http://www.teaser.fr/~gvanderrest/bcpst/docs/TP/petro.html

La meilleure est une variété de silex, constitué par de la silice, connue sous le nom de silex meunier, ou plus simplement de meulière. Il existe des gisements dans beaucoup de pays d'Europe et d'Amérique, mais la France en est particulièrement bien dotée. Le gisement le plus important est celui de la Ferté-sous-Jouarre. On en trouve aussi dans la Marne, à Montmirail et Épernay, à Épernon, dans l'Eure-et-Loir, à Lésigny dans la Vienne, à Bergerac en Dordogne, et à Saint-Mars-la-Pile en Indre-et-Loire. On trouve aussi des pierres dans l'Yonne, l'Eure, les Deux-Sèvres
http://www.moulinsdefrance.org/old/meule_a.html




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Note added at 4 hrs (2007-03-17 21:50:26 GMT)
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As for "millstone", personally I've never encountered the expression in connection with construction, and were I to have before learning French, I would probably have imagined a house built of disused millers' ... make that millers' disused millstones. Then again, a "millstone house" might be one that requires more money to maintain it than it is worth ...

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Note added at 4 hrs (2007-03-17 22:01:14 GMT)
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Maisons meulières (different kinds, actually):
http://images.google.com/imgres?imgurl=http://www.feau-immob...
http://www.focusfrance.com/clients/imageup/12810-1.jpg
http://www.arche-immobilier-montargis.com/immobilier/photos/...
http://www.arche-immobilier-montargis.com/immobilier/photos/...

Flint houses:
http://images.google.com/imgres?imgurl=http://www.wallingfor...

http://www.concentric.net/~Djfrench/P_Houses/flinthouse.jpg
gwydir.demon.co.uk/jo/minerals/flint5.jpg
http://images.google.com/imgres?imgurl=http://www.periodprop...

Maybe "brown stone house" would do.


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Note added at 17 hrs (2007-03-18 10:11:05 GMT)
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For me, "millstone grit" is the technical equivalent. Everyone in France knows what a "maison meulière" is built with, but I remain to be convinced that everyone in the UK knows what a "millstone grit house" is. I wonder how many people would think it was some sort of outbuilding where a miller stored grit for improving the efficiency of his millstones ... With "flint house" one immediately has a mind's-eye picture of the house, and knows it is not timber or brick or concrete or granite, that it is a brown (and white and black, possibly) stone. THere may be cases where strict technical accuracy is called for, however.

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Note added at 17 hrs (2007-03-18 10:19:12 GMT)
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Apart from anything, "maison meulière" is not as much a description of what the house is built with as it is an indication of prestige, aesthetics, and construction quality, in much the same way "Georgian stone" (albeit 50-100 years earlier) talks more about a buyer's social aspirations than about what a house is made of. What best captures this notion in English, for the period concerned, I don't know.