I'm assuming that this presentation is concerning a proposed/planned construction project, in which case I think construction project is fine, and if you need to refer to the thing that is being constructed, you can call it a proposed building or a proposed facility (more generic).

If it's already underway and they are giving a progress report, I would still call it a construction project, but then if you need to refer to it you could call it the building/facility under construction.

Hope that helps! :)

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Note added at 3 hrs (2007-11-27 19:30:16 GMT)
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Строительный объект can certainly be a construction site, but it is often used in a broader sense to refer to a construction project. See, for example, строительный объект in Multitran--not that Multitran is any sort of final authority, but I think the numerous Multitran entries involving the word "project" strengthen the case for the broader translation here. Here are a few more examples grabbed at random from the Web:

"Строительные объекты выполненные компанией СиМК-А" - you can't say "construction sites performed by Company X," you have to say projects.

"Комплексное снабжение строительных объектов: Я представляю компанию "Марпа", которая осуществляет комплексное снабжением строительных объектов материалами по ценам производителя." They are not talking about assembling a site--they are talking about constructing a building--so site won't work here, either.

There are also plenty of examples where "construction site" is more appropriate, of course. I just picked a couple to illustrate that site is not always correct.


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Note added at 22 hrs (2007-11-28 14:31:56 GMT) Post-grading
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Glad I could be of assistance.

One note about Iris' "construction unit"--she mentions that it works in British English, which as a speaker of American English I can't speak to one way or another--but I have not encountered that phrase in this sort of context American English...FWIW.