Our 1960s Amsterdam townhouse has a slow drain in the basement, and a plumber suspects the original cast-iron drainage pipe is corroded. We're renting, so not sure if this is our responsibility. The pipe runs about 8 meters to the street connection. What should we budget if we need to replace it, and who pays?
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Cast-iron drainage replacement is expensive because it involves excavation, disposal, and often permits. For an 8-meter residential drain line in 2026, expect €2,500–€4,500 depending on soil conditions, access, and whether the street connection needs work. If you're renting, the landlord typically covers structural drainage (Article 7:204 Dutch Civil Code covers maintenance obligations). Get written confirmation before proceeding. Costs vary by: excavation depth, ground type, local labor rates, and whether HDPE pipe (cheaper, standard) or ceramic (pricier, heritage buildings) is required. Many Amsterdam properties need gemeentevergunning (municipal permit) for street-side work—your pro will handle this. Post your job on AstraNL to get firm quotes from verified local drainage specialists who know Amsterdam's soil and permit requirements.
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