Purchasing an apartment adjacent to old, abandoned, or dilapidated buildings in Lisbon will likely result in years of nuisance (noise, dust, traffic) from future renovation or new construction projects on those neighboring properties.
"if you are looking at a building and you notice that the buildings next to it are old abandoned dilapidated those buildings that are on either side of you those buildings could potentially be renovated torn down and rebuilt again and so that is something that you should keep in mind is that when you are buying a building look at your neighbors because the construction activity that happens with your neighbors because buildings are so close together they would definitely affect you and they could affect you for years"
