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.
Looking for a single-storey extension in Herefordshire? We organise the whole job, bringing in the trades it needs under one agreement, and you have a single contact. We cover Hereford, Leominster, Ross-on-Wye and Ledbury, along with villages and suburbs nearby. The rules in England decide what consents are needed, and our guide range of £34,500–£74,000 including VAT gives you a realistic starting point for a budget.
- Guide price
- £34,500–£74,000 inc VAT
- Time on site
- 10–16 weeks on site
- Planning rules
- England
- Price level
- About 2% below the national guide
- Towns listed
- 4
- Survey
- Free, with a written quote
Single-storey extensions prices in Herefordshire
Use the table to gauge the cost of a single-storey extension in Herefordshire before we visit. Figures include VAT and are scaled for the West Midlands, coming out about 2% below the national guide, which gives £34,500–£74,000 overall. After a free survey, you receive a fixed written price.
| Type of job | What it usually involves | Guide in Herefordshire |
|---|---|---|
| Small extension (8–12m²) | A modest rear or side extension, such as a utility room or a slightly larger kitchen. | £21,500–£39,000 |
| Typical rear extension (15–25m²) | A kitchen-diner or family room with bifold doors and a rooflight or lantern. | £34,500–£74,000 |
| Large or wrap-around (30m² plus) | A wrap-around or wide rear extension, often with structural steelwork into the house. | £69,000–£127,000 |
What moves the price up or down:
- Floor area, shape and number of corners
- Roof type, rooflights, lanterns and the amount of glazing
- Steelwork needed to open into the existing house
- Finishes, kitchen, flooring and heating specification
Scope of the work
- Groundworks, foundations and below-ground drainage
- Flat or pitched roof, with rooflights or a lantern if specified
- Steel beams to open into the existing house
- Electrics and plumbing by qualified trades, with certificates
- Windows and external doors, including bifolds if chosen
- Building control inspections and completion certificate
Housing across Herefordshire
Herefordshire is known for black-and-white timber-framed buildings, especially in villages around Weobley, Pembridge and Eardisland. Old Red Sandstone is used widely in churches, farmhouses and walls, Hereford has Victorian terraces and interwar suburbs, and market towns such as Leominster, Ledbury and Ross-on-Wye mix historic centres with newer estates.
Timber-framed and sandstone properties often need lime plaster, breathable finishes and careful roof repairs. Town terraces suit loft conversions and rear extensions, and rural homes commonly add porches, driveways and fencing.
A mild, rural county with frost-prone valleys; the Wye and Lugg flood regularly, so ground levels and drainage matter for outdoor work.
Planning and building rules in Herefordshire
Which rules apply depends on where you live. For Herefordshire, the answer is England, and the points below reflect that; we verify them with the council before quoting.
In England, many single-storey rear extensions are permitted development: typically up to 3 m deep on a semi-detached or terraced house and 4 m on a detached house, no more than 4 m high, and covering no more than half the land around the original house. Larger rear extensions can go through the prior approval process. Side extensions, flats, listed buildings, conservation areas and homes where permitted development rights have been removed need planning permission.
Building Regulations approval is needed for almost every extension, covering foundations, structure, insulation, drainage, ventilation and fire safety. If the work is on or near a shared wall or boundary, the Party Wall etc. Act 1996 may apply.
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?
Survey and measure
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
After the survey we send a quote for a single-storey extension that fixes the price for the scope we've agreed. If you want to change materials or scope, we revise it in writing before anything is booked.
Dates and permissions
Preparation matters as much as the build. We agree access, parking and working hours with you, order materials in good time, and confirm any permissions so the job isn't held up once it starts.
Build and hand over
Our trades complete a single-storey extension while your point of contact keeps you updated. When everything is finished, we clear the site, take away waste and go through the result with you before handover.
What you can expect from us
Frequently asked questions
Can you combine a single-storey extension with other work?
Yes. Because we manage several trades under one contract, we can plan a single-storey extension alongside other work on your Herefordshire home, such as new windows with rendering, or a kitchen refit with an extension. Combining jobs can reduce repeat set-up such as scaffolding, skips and access, and every element is listed and priced in the same written quote.
What does a typical extension build look like week by week?
A typical single-storey extension follows the same order: clearing the site and digging foundations, building walls up to roof level, then fitting the roof and windows to make it weathertight. Electrics, plumbing, insulation and plastering follow. The last stage is opening into the house, laying the screed and fitting doors and finishes. Building control inspects at key stages, and we book those visits for you.
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.
Do you cover Hereford, Leominster and Ross-on-Wye?
Yes. As well as Herefordshire, we cover Hereford, Leominster and Ross-on-Wye and the rest of Herefordshire. 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.
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.
Towns in Herefordshire
Find your town below. Every place listed in Herefordshire is covered for a single-storey extension, with the same survey, written quote and fixed-price process.