Builders in Glasgow

If you are looking for builders in Glasgow, start with the Scottish rules, because most advice online is written for England. Work that increases a house's floor area, forms a dormer or turns a roof space into a room needs a building warrant from the council before it starts, and building without one is an offence (Building standards procedural handbook, version 1.9, read 12 October 2026). A good local builder will raise this in the first conversation. If one does not, treat that as a warning.

What is different about building in Glasgow?

Three things set the city apart from most of the UK: the flats, the stone and the paperwork.

Flats first. The Scottish House Condition Survey found that Glasgow City is the council area where households were most likely to live in flats, at 74%, against 36% across Scotland (2022-2024 survey, published 26 May 2026; gov.scot, read 12 October 2026). The same table shows only about 57% of dwellings in Glasgow and Edinburgh were built after 1945, compared with 72% nationally. So much of the work here is repair, upgrade and conversion of older shared buildings, not the semi-detached extension that dominates English advice.

The stone is sandstone, the main building stone in Scotland. It is relatively soft and porous, and Historic Environment Scotland's Engine Shed advice says it decays when water gets in, often through failed roof leadwork, cracked rainwater goods or open joints (Engine Shed, sandstone, read 12 October 2026). That affects who you hire, which the repair section below covers.

The paperwork is the building warrant, covered next.

Do you need a building warrant in Glasgow?

For most structural jobs, yes. mygov.scot says that if your work needs a building warrant you must get one before you start, and that starting without one could lead to a fine. A warrant lasts three years from the date it is granted, and the fee depends on the value of the work (mygov.scot, building warrant, read 12 October 2026).

The Scottish technical handbook sets out what is exempt. Some small detached buildings between 8 and 30 square metres can be built without a warrant, with conditions on distance from boundaries and on fixed combustion appliances or sanitary facilities. But the general exemption for work to a house excludes any work that increases its floor area, and any demolition or alteration of the roof, external walls or element of structure. The handbook gives forming a dormer window as an example, and says that developing a roof space as habitable space is a conversion needing a warrant (technical handbook 2022, domestic, section 0.5, read 12 October 2026). The handbook is revised from time to time, so ask the council which edition applies to your application.

In plain terms, an extension, a loft conversion, knocking through a load-bearing wall and most structural alterations will need a warrant. mygov.scot explains how to apply through the eDevelopment portal, and you can ask Glasgow City Council's building standards team about an unusual job before you commit (mygov.scot, building warrant).

What happens if work was done without one?

The procedural handbook says the usual remedy is a building warrant enforcement notice, which is served on the "relevant person" (not, in general, a builder working for a client). A late application made before works are complete must meet the standards in force at the time and carries a fee of 200% of the standard fee. A completion certificate for work done without a warrant costs 300% of the standard fee. This matters when you buy a flat that someone has already altered: ask for the warrant and completion certificate for any extension, loft room or removed wall.

Is planning permission the same thing?

No. Planning permission and a building warrant are separate consents, and Scotland has its own permitted development rules, which differ from English ones. The Town and Country Planning (General Permitted Development) (Scotland) Order 1992 is the underlying order (legislation.gov.uk, read 12 October 2026), and the Scottish Government explains the householder rules in Planning circular 1/2024.

For a house, Class 1A covers some single-storey extensions. The circular says the overall height of the extension cannot exceed 4 metres, and it cannot cover more than half the front or rear curtilage. It also says there are no permitted development rights for single-storey ground floor extensions in conservation areas or for flats, and that listed building consent is normally needed if the building is listed. Dormers fall under a separate class, Class 1D (Planning circular 1/2024, section 4, read 12 October 2026).

If you live in a flat, which in Glasgow is most people, the rights are narrower. Class 4A allows some external alterations but does not cover enlargements, and there are no Class 4A rights in a conservation area or within the curtilage of a listed building (circular 1/2024, section 5, read 12 October 2026). A new dormer on a top-floor tenement flat will therefore usually need a planning application, and a building warrant on top. Read mygov.scot's guide to getting planning permission and ask Glasgow City Council's planning service for advice before paying for drawings. Conservation area status is something only the council can confirm for your street.

Who pays when the repair is shared?

In a tenement, many repairs belong to everyone. Your title deeds come first. mygov.scot says the Tenement Management Scheme applies only where the deeds say nothing, are unclear or conflict. Under the scheme, owners usually split costs equally, apart from parts used only by some owners and cases where the largest flat is more than one and a half times the floor area of the smallest. Decisions are made by vote, with one vote per property (mygov.scot, Tenement Management Scheme, read 12 October 2026). The rules sit in Schedule 1 to the Tenements (Scotland) Act 2004.

Before you invite builders to quote for a roof, chimney, stair or close, get the deeds checked and your neighbours to agree in writing. A solicitor can read the title conditions. Builders can price work for you, but they cannot settle who owes what.

How should sandstone be repaired?

Carefully, and by someone who has done it before. Engine Shed's advice for sandstone is to avoid cleaning in the first place, because cleaning strips the protective surface and some cleaned buildings decay "6 to 10 times faster" than their uncleaned neighbours. Replace only stones that are failing, repoint open joints with lime mortar and not synthetic materials, and use a contractor with technical knowledge, craft skills and access to suitable materials. Cleaning on listed buildings or in conservation areas needs consent.

Ask any builder quoting for stonework or pointing three questions. Which mortar will you use? How will you decide which stones to replace? Can I see a similar job? Cement pointing on old sandstone is the classic fault.

What do extension and loft jobs look like here?

For a house in Glasgow's suburbs, an extension builder will usually work from architect or technician drawings submitted with both planning (where needed) and the warrant. Expect them to ask whether you have a warrant in place before they price, and to talk about the staged inspections the council sets. For a flat, the first question is the title deeds, the second is the neighbour above or below, and the third is planning. These steps often take longer than the construction itself, so start them early.

Loft conversion in Glasgow raises its own questions. Tenement roofs are shared, so converting your top-floor flat's roof space may touch the roof, chimneys, stair and common walls that other owners have rights in. Our loft conversions and extensions pages explain the work itself, and the loft conversion cost guide and house extension cost guide show how to read published prices. We do not quote Glasgow prices on this page, because we have not found a published local figure we can verify.

How do you find a local builder in Glasgow?

Use the same checks as anywhere, adjusted for Scotland. Our guide on how to hire a builder covers insurance, written quotes, payments and cooling-off rights. Add these Glasgow-specific questions:

1. Have you applied for building warrants in Glasgow before, and who will submit this one?
2. Will you work to the warrant drawings and tell the council's building standards team when each stage is ready for inspection?
3. Who is responsible for the completion certificate?
4. Have you repaired sandstone with lime mortar, and can I see the work?
5. If the job affects common parts, who is dealing with the other owners?

You can search for a builder near you or browse by city. Our ranked list is ordered by verified reviews from the last 12 months, then by distance, and nobody pays to move up it. A labelled Featured slot sits above the list. An enquiry goes to one builder only. The directory is still being filled town by town, so check the builder's own insurance and registrations on the relevant scheme's site.

Note that the England and Wales guidance on our site about building regulations does not apply to Scotland, where the building warrant system is separate.

The Glasgow housing picture

The UK House Price Index put the average price in Glasgow City at £193,675 in July 2026, up 2.6% on a year earlier, against £196,349 for Scotland as a whole. National Records of Scotland's mid-2025 estimates give Glasgow City 654,330 people, 300,114 households and 329,581 dwellings, the most of any of the 32 Scottish council areas. Band B is the most common council tax band at 24.8%. None of this tells you what your job costs, but it shows a large, flat-dominated and older housing stock, which is why repair and conversion work is such a large part of what Glasgow builders do.