A single-storey extension is a new ground-floor room built onto your house, usually at the rear or side, with its own foundations, walls and roof, creating a bigger kitchen, living space or bedroom without moving home.
Addresses across ML3 fall within our coverage for a single-storey extension, so if your home is in Hamilton we can arrange a survey on a day that works for you. We inspect the existing building, discuss materials and layout, and then price the agreed specification in writing. Expect a guide range of £33,500–£72,000 including VAT before that visit.
- Guide price
- £33,500–£72,000 inc VAT
- Time on site
- 10–16 weeks on site
- Postcodes
- ML3
- Planning rules
- Scotland
- Local area
- South Lanarkshire
- Survey
- Free, with a written quote
Single-storey extensions prices in Hamilton
The table below shows guide prices for a single-storey extension in Hamilton. They are based on rates in Scotland, which run about 4% below the national guide, giving an overall range of £33,500–£72,000. All figures include VAT and are firmed up after a free site survey.
| Type of job | What it usually involves | Guide in Hamilton |
|---|---|---|
| Small extension (8–12m²) | A modest rear or side extension, such as a utility room or a slightly larger kitchen. | £21,000–£38,500 |
| Typical rear extension (15–25m²) | A kitchen-diner or family room with bifold doors and a rooflight or lantern. | £33,500–£72,000 |
| Large or wrap-around (30m² plus) | A wrap-around or wide rear extension, often with structural steelwork into the house. | £67,000–£125,000 |
What moves the price up or down:
- Floor area, shape and number of corners
- Ground conditions, foundation depth and drains to divert
- Steelwork needed to open into the existing house
- Finishes, kitchen, flooring and heating specification
What does the job include in Hamilton?
- Groundworks, foundations and below-ground drainage
- Steel beams to open into the existing house
- Electrics and plumbing by qualified trades, with certificates
- Windows and external doors, including bifolds if chosen
- Plastering, screed floor and internal doors
- Building control inspections and completion certificate
Building in Hamilton
Lanarkshire mixes sandstone tenements and terraces in Hamilton, Motherwell, Airdrie and Coatbridge with former miners' rows and large post-war estates, many finished in roughcast. East Kilbride and Cumbernauld were developed as post-war new towns, and newer private estates surround most towns.
Roughcast homes commonly need re-rendering, window replacement and roof work. Semis and bungalows suit extensions and loft conversions, and new-town houses often take garage conversions and driveways.
These patterns matter for a single-storey extension: older walls, roofs and floors in Hamilton can need different materials or extra preparation compared with newer homes.
Do you need permission in Hamilton?
Each UK nation sets its own consent rules, and Hamilton is in Scotland. What follows is a plain summary; we check the specifics for your property with the council before pricing anything.
In Scotland, Class 1A permitted development covers some single-storey extensions, within limits on depth, height and distance from boundaries, and not in conservation areas or on flats. Anything outside those limits needs planning permission from the council.
A building warrant from the council’s building standards service is usually needed before work starts, and a completion certificate is accepted at the end. There is no Party Wall Act in Scotland; work near a boundary is agreed with neighbours under general law.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
How does the job run?
A visit to your home
A free survey comes first. It gives us what we need to price a single-storey extension properly, including dimensions, existing materials and access for deliveries, and gives you the chance to ask anything you like.
Your fixed price
The quote arrives in writing, not over the phone. It covers the full scope, the finishes you've chosen, any exclusions and the payment schedule, with a fixed price tied to that specification.
Dates and permissions
With the quote agreed, we book the work in and handle preparation: permissions where needed, building control notifications, material orders and access arrangements for your Hamilton property.
Finish and handover
During the work we protect the areas around it and tidy up at the end of each day. Once complete, we check the finish, remove our materials and hand over paperwork such as building control sign-off where it applies.
Working with SK Home Improvements
Single-storey extensions in Hamilton: questions
Do you cover Meikle Earnock, Motherwell and High Blantyre?
Yes. As well as Hamilton, we cover Meikle Earnock, Motherwell and High Blantyre and the rest of Lanarkshire. Our coverage is UK-wide, so the process is the same wherever you are: a free site survey, a quote in writing that fixes the price for the agreed scope, and one point of contact while the work is planned and carried out.
Who do I deal with during the job?
One point of contact manages your project from survey to handover. They schedule the trades working under our contract, keep you updated on progress, and are the person to call with any question. You don't need to coordinate builders, electricians or decorators separately, because that is part of what we do.
Is a flat roof or a pitched roof better on an extension?
A flat roof is quicker to build and usually costs less, gives a clean modern look and works well with a roof lantern. A pitched roof matches the main house, sheds water faster and allows a vaulted ceiling, but it costs more and its height can affect neighbours. Modern flat roofs in EPDM rubber or GRP last well when properly detailed. Planning rules on height can also decide the choice.
Can we stay at home during the build?
Most people stay at home while we build a single-storey extension, because the new structure goes up outside before we break through. The disruptive part is usually the last few weeks, when we open into the house and fit the kitchen. We put up dust screens, keep a safe route through the house and agree a temporary kitchen setup if needed. Water and power are only off for short, planned periods.
How long does a single-storey extension take to build?
A single-storey extension usually takes 10–16 weeks on site, from digging foundations to final plastering. Bad weather, deep foundations or a complex roof can add time. Before work starts, allow several weeks for drawings, structural calculations and building control approval, and longer if planning permission is needed. We give you a stage-by-stage programme with your quote so you know what happens each week.
Also covering areas around Hamilton
Coverage for Hamilton spans ML3. Close by, Meikle Earnock, Motherwell and High Blantyre are covered too, and the rest of our UK-wide area follows the same survey-then-quote process from start to finish.