It is probably true to say that most of us love our gardens completely and we lavish attention on it most of the time. However, some of the things we plant can grow into monsters in the course of a few years, and it is at these times that specialists have to be called in to sort out the problems. In some cases, surgery can be performed to bring the erstwhile specimen under control but when this is not possible it may have to be taken out completely. For those who are suffering from just such a problem, look online for something like 'tree service' or 'tree removal' to see which companies can do this in the local area.
The wonderful thing about these huge specimens, like oaks or elms for example, is that they can often be trimmed and trained to just the right size for us to admire. They house things like small animals and they are often an integral part of children growing up and having a swing or house place amongst its branches somewhere. However, if disease strikes, much like the Dutch elm disease did some years back, or if the whole thing starts to take over the yard and the one next door too, it could lead to disputes with neighbors which could end up in court.
Some people do not realize that a branch which overhands the next yard can actually be cut off by that neighbor. Any fruits which hang on that tree also become his, but the wood belongs to the original owner. That means that the neighbor can hack away at it as long as he returns any wood gleaned to the neighbor who owns it! It is best to call in the experts who can see how the specimen can be best controlled in the position that it is in. If it has grown too big, or the disease is untreatable, they may just have to take the whole thing down. This is a difficult task at the best of times but the root itself is something else for sure.
Roots of some specimens can spread far and wide amongst the neighborhood and may just infiltrate the foundations of a house too. So it is not just a matter of wrenching up the whole root system in one fell swoop. Rather, the system may need to be treated so that it will die first which should make it easier to dig out eventually. The wood from these huge specimens can be quite valuable too, as long as it is not diseased, but some species are protected by law. Whichever company is chosen to come and do this kind of work, they should have all this knowledge at their disposal.
When they take down the trunk and branches, make sure that it is chopped ready to burn by the householder, or, if it is being taken away, do a deal with whoever wants to buy it. It belongs to the owner and not the specialist so ensure that the benefit goes to the right person.