Structural Renovations near you

Part A of Schedule 1 to the Building Regulations 2010 carries three requirements and a structural renovation is measured against all of them: A1 on loading, A2 on foreseeable ground movement, and A3, which requires that in the event of an accident the building will not suffer collapse to an extent disproportionate to the cause. Our foundation guide sets out the loading and ground movement wording in full. What matters here is the part of it that bears on altering a house that is already standing.

The clause worth pulling out of A1 is its ending. Loads are not merely to be carried safely: they must be carried without causing deflection or deformation of any part of the building, or movement of the ground, that would impair the stability of any part of another building. In a terrace or a semi, another building means the house next door. That is why a beam sagging slightly more than it should, a bearing concentrating load onto tired brickwork, or a dig that takes support from beside a neighbour's footing are regulatory failures rather than merely untidy ones - and why the engineer's calculation is a document about two houses, not one.

Whether a particular job is controlled work at all is decided by the definition of a material alteration in regulation 3 of the Building Regulations 2010, which our joinery guide explains in detail. For structural work the answer is almost always yes, because Part A is one of the requirements listed in that definition, and the practical consequence is an application to a local authority building control service or a registered building control approver in England and Wales, a building warrant in Scotland, or district council building control in Northern Ireland.

Section 2A of the Defective Premises Act 1972 was inserted by section 134 of the Building Safety Act 2022 and came into force on 28 June 2022. It provides that a person who, in the course of a business, takes on work in relation to any part of a relevant building - a building consisting of or containing one or more dwellings - owes a duty to the person for whom the work is done, and to every person who holds or acquires an interest in a dwelling in the building, to see that the work is done in a workmanlike or, as the case may be, professional manner, with proper materials, and so that as regards that work the dwelling is fit for habitation when the work is completed.

Before 2022 the equivalent duty in section 1 of the Act applied only to the provision of a new dwelling, which is why it so rarely helped homeowners having work done to a house that already existed. Section 2A closes that gap, and it is not limited to the person who wrote the cheque: it also runs to anyone who later acquires an interest in the dwelling. The duty does not apply where the work relates to the initial provision of the dwelling, which is section 1's territory, or where the building ceases to be a dwelling on completion.

The time limit is the part that makes it useful. Section 4B of the Limitation Act 1980 sets a period of 15 years from the date the right of action accrued for actions under section 1 and section 2A of the Defective Premises Act 1972 and under section 38 of the Building Act 1984, and section 2A itself treats the cause of action as accruing when the work is completed. For a structural defect that takes years to declare itself, that is a materially different position from an ordinary contract claim - which is exactly why it is worth having the drawings, calculations and building control paperwork filed rather than lost.

Structural mistakes announce themselves slowly. The classic sequence after a badly executed wall removal is hairline cracking at the ends of the new beam, doors upstairs that start to bind, and a line of cracking in the ceiling where a partition above has settled onto something that is now deflecting. None of it appears in the first week, which is why the sign-off paperwork matters more than the appearance of the finished room.

Chimney breast removal is the job that produces the largest number of unpleasant surprises, because the stack above is heavy, and because in a terrace it may be sharing a party structure with the house next door. Removing a breast below while leaving the stack above unsupported is one of the classic dangerous alterations, and it is often discovered only when the neighbour's chimney starts to move.

The third pattern is the one bought with the house. Where an opening was formed years ago with no approval, there is no calculation to check against, and the only honest answer is to expose the bearings and have them assessed. A regularisation application to the local authority is available for unauthorised work in England and Wales, and it is far better than hoping the question never comes up - because at sale it always does.

The cost sits in the load and in the access. What the wall is carrying, how far the new beam has to span, how heavy the steel is and how it gets into the house, what the existing masonry is like where the bearings land, whether the work involves a party structure and therefore notices and a surveyor, whether temporary propping has to hold a floor or a roof, how much making good follows, and whether the engineer's design has to allow for ground conditions or a nearby tree. A single-storey opening in a modern cavity wall and a two-storey opening in a Victorian terrace are not the same job at any scale.

LokalMatch connects you with contractors and nothing more. Describe the structural work once, with your postcode and any engineer's drawings you already hold, and firms covering your area will approach you. Homeowners never pay to use LokalMatch; the pros pay for the enquiries they are sent. LokalMatch does not carry out work, does not set prices and does not vet, rank or recommend anyone, so verifying insurance, previous structural jobs and who is providing the calculations is your responsibility.