“Building services” is one of those phrases that sounds clear until you try to search for it. You know something in your home needs sorting, but you are not sure whether you need a builder, a roofer, a plasterer or someone else entirely. So you type something vague into Google and end up more confused than when you started.
This guide breaks the term down in plain English. By the end you should know what falls under building services in London, and which type of work matches the job you have in mind.
The short answer
Building services is an umbrella term. It covers almost any physical work carried out on a property, from a small repair to a full extension. A general builder is someone who can either do that work themselves or bring in the right trades to get it finished.
Most jobs fall into one of four groups:
- Structural work
- Exterior work
- Interior fit outs
- Ongoing maintenance
Here is how they compare.
| Type of work | What it usually involves | Typical timescale |
|---|---|---|
| Structural | Extensions, loft conversions, removing walls, underpinning | Several weeks to several months |
| Exterior | Roofing, chimneys, rendering, damp proofing, paving, fencing | A few days to a few weeks |
| Interior fit outs | Kitchens, bathrooms, plastering, painting and decorating | A few days to a few weeks |
| Maintenance | Gutter clearing, small repairs, repainting, general upkeep | Hours to a couple of days |
Structural work
This is the heavy end of the trade. It means changing the shape or layout of a building, or dealing with the parts that hold it up.
Common examples include building an extension, converting a loft, knocking through two rooms into one, or repairing walls and foundations that have started to move.
Structural jobs almost always need paperwork. Building regulations approval is usually required, and planning permission may be needed too, depending on the size and location of the work. You can check what applies to your project on the Planning Portal guide to extensions, which explains the rules in a way that does not require a background in construction.
If you are planning to add space rather than just repair it, house renovations and extensions in London is the category you are looking for.
Exterior work
Exterior work protects the outside of your home from weather. It is the part people notice least until something goes wrong.
It includes:
- Roofing, from small leak repairs to full replacements
- Chimney repairs and rebuilds
- Rendering, which is the protective coating on outside walls
- Damp proofing and waterproofing
- Paving, decking, fencing and garden landscaping
The reason this work matters is simple. Water is the biggest threat to any building. A cracked tile or a blocked gutter can lead to damp inside the house within a single wet winter, and fixing damp costs far more than fixing the tile would have.
Interior fit outs
This covers everything that makes a room usable and pleasant to be in. Think kitchen and bathroom installation, plastering, tiling, flooring, and painting and decorating.
Fit out work is often the final stage of a bigger project. Once an extension is built and made watertight, the fit out turns a shell into a room you can actually live in. It can also be done on its own, for example when you want a new bathroom in an otherwise finished house.
Maintenance
Maintenance is the small, regular work that keeps a property in good shape. Clearing gutters, replacing a few roof tiles, repainting woodwork, fixing a fence panel after a storm.
It is easy to put off because none of it feels urgent. That is exactly why it is worth booking in. Regular property maintenance is far cheaper than the repair job you end up paying for when a small problem is left alone for three years.
Landlords in particular tend to arrange this on a rolling basis, since keeping a rented property in good repair is a legal duty as well as a sensible one.
How to work out which one you need
If you are still unsure, these questions usually settle it:
Is the room the wrong size or in the wrong place? You need structural work.
Is water getting in, or is the outside of the house looking tired? You need exterior work.
Is the space fine but the fittings are old or damaged? You need an interior fit out.
Is nothing actually broken yet? You need maintenance, and you are ahead of most people by asking.
Why use one firm rather than several
A single extension can involve groundworkers, bricklayers, roofers, electricians, plumbers, plasterers and decorators. Hiring each one yourself means managing seven different schedules and hoping nobody turns up on the wrong day.
A general builder handles that coordination for you. One point of contact, one plan, one person responsible if something slips. For anything beyond a very simple job, that is usually worth more than the small saving you might make by piecing it together yourself.
A note on quotes
Whatever category your job falls into, ask for a written quote that lists materials, labour and timescales separately. A quote that is a single figure with no breakdown makes it very hard to compare firms fairly, and even harder to query later if the final bill looks different.
Also check that the builder works in your area. Coverage varies, and a firm based across London may or may not travel out to Hertfordshire, Bedfordshire or Buckinghamshire.