Chantier means a building site, but has a colloquial meaning of "a mess" (see http://french.about.com/od/vocabulary/g/chantier.htm ), so I guess scrappy/loose/chossy might be a plausible translation in this context.
In reply to French Erick: I thought I recalled seeing the word chantier relating to road works, so both the suggestions made could make sense. So if it means chossy, probably it still will be, but if it means being developed then it should be sorted by now (8 yr old guidebook). Thanks for the suggestions one and all.
In reply to Rog Wilko: I have just asked our Resident French person and she says it roughly means started but not finished, there is no real direct English translation
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