"There is an increase in the amount of planned and pipeline office development"

Контекст: There is an increase in the amount of planned and pipeline office development, however, it is unlikely to be until 2009 – 2010 that any significant delivery of well-located high-quality space will be completed that might affect the market and rental for this type of product.

Трубопровод, нефтепровод, и прочие трубы к тексту совсем не имеют отношения.