How do I know if I can demolish an internal wall?

Depends on if it is a solid wall or a hollow partition (eg stud and plasterboard). Many stud partition walls are not load-bearing, however you can have a load-bearing wall that is a stud wall. A solid wall (brick or block) is more likely to be load-bearing, almost certainly if the wall continues up through the next floor. Even if it doesn't continue up, it may be supporting the floor joists for the floor above. To really be certain, you will need a structural engineer to examine and determine if the wall is load-bearing or not and the necessary measures to remove the wall if it is load-bearing. Experienced builders, especially from, say, design and build companies should also be able to give you a pretty definitive answer.

Hi Zach, you will need building control from you local council office to approve your alteration anyway! Call them and they will give you guidance and will once you have paid the fees required they will visit and determine what you can do and if structural calculations are required,you would have to retain the services of a structural engineer. Should you not undertake building control, you will have problems when you come to sell and move on because assurances will be sought , that the work was carried out in accordance with building regs Hope this helps Regards ian

It all depends on weather it’s supporting wall in terms of the if it’s 100mm or 50mm block if it’s holding joists etc

Now you have found out it is load bearing I would get drawing from structural engineer and acro up support and install a steel beam to take the weight from up above this would allow a open plan area and all works confirm too what structural engineers says in his drawings this is my opinion I am stonemason 25years

I wos recemending to invite the council building surveyor to give ther opinion.

If its Hollow / a stud wall than its not a load bearing wall, should be fine but always get a second opinion