Garden Rooms in Stevenage

Garden rooms near me in Stevenage SG1

Looking for garden rooms near Stevenage SG1? This page is for homeowners in Stevenage, Hertfordshire. You describe the room you want, and we match you with builders who already take on work in and around Stevenage, so nobody has to drive across the county to see your garden.

Garden Room Match is a matching service, not a builder. Up to 3 local builders get your request, each visits your Stevenage plot for free, and each sends a written quote you can compare like for like.

Every request is read by a person on our side before it goes to builders, so a postcode in SG1 that is outside a builder's range does not get passed on by mistake.

Local garden room builders in Stevenage

The builders we work with already take on garden rooms in Stevenage and the area around it. That matters because a builder who knows Hertfordshire knows how Stevenage Borough Council handles outbuildings, which ground is clay or chalk, and which roads are awkward for a delivery lorry.

Every builder we work with is insured and established: public liability cover and three or more years trading. They give written quotes, so you compare the same things across 3 quotes instead of three different conversations. There is no fee to you; builders pay for introductions. We cannot promise a particular builder will be free on your dates, which is why you get up to 3 to choose from.

Garden room with bifold doors folded open onto a hardwood deck with loungers on a summer evening, an example of the kind of garden room builders near Stevenage SG1 are asked for — Garden room with bifold doors open onto a hardwood deck on a summer evening. Design idea, not a real project.

How it works in Stevenage: three steps

1
Tell us about your garden
Answer a few questions: the room you want, roughly how big, and your SG1 postcode. It takes about a minute and costs nothing.
2
Up to 3 Stevenage builders visit
We pass your request to up to 3 builders who work near Stevenage. Each visits for free, measures the plot, checks access and asks what you want from the room.
3
Compare written quotes
You get written quotes to compare like for like. Pick one, ask questions, or walk away. Expect to hear back within 48 hours.

How we vet Stevenage builders

A builder gets no requests until every check below is done and on our records. We repeat the insurance, identity and company checks at least every 12 months.

Public liability insuranceWe see the policy document and record the insurer, the amount of cover and the expiry date. When the policy expires, the builder stops getting requests automatically until we see the renewal.
Identity checkedWe check who runs the business.
Established: 3+ years tradingWe look the company up on Companies House, or check a sole trader’s trading history.
Signed agreementThey sign our lead agreement before they see any request.
They get in touchThey must contact at least 90% of homeowners within 48 hours, or they stop getting requests.

The badges you see

If you gave us your email, we send you each matched builder’s name and badges. A badge only shows while the check behind it is in date, and we never show one we have not checked ourselves.

Every matched builder

Insured £…with their amount of cover
Company checkedlinked to its Companies House record, or “Sole trader checked”
ID checkedwe know who runs the business

Some builders also have

Insurance-backed guaranteeonly if they offer one and we have checked it
Scheme memberfor example TrustMark or the FMB, checked on the scheme’s own register

Garden room prices in Stevenage: guide prices by size

These are guide prices, not quotes. They come from the same size bands as our garden room cost calculator and include VAT. A Stevenage builder who has seen your garden will give you a firmer figure in writing.

A garden office is the baseline. A gym, studio or annexe adds a little more for the floor, light, sound or sleeping space; the columns show each room type at each size.

Guide figures for fitted rooms, including VAT. Not a quote: your written quotes depend on your plot. Prices assume easy access to the garden. If materials have to be carried through the house, the calculator adds £1,000 to £2,500.

Guide prices by size and room type in Stevenage
Size	Garden office	Garden gym	Studio	Annexe
SmallAbout 3 × 3 m	£12,500 to £18,000	£13,500 to £20,000	£13,500 to £20,500	£16,500 to £25,000
MediumAbout 4 × 3 m	£18,000 to £29,000	£19,000 to £31,000	£19,000 to £31,500	£22,000 to £36,000
Large5 × 4 m and up	£32,000 to £58,000	£33,000 to £60,000	£33,000 to £60,500	£36,000 to £65,000

Guide figures including VAT, rounded to the nearest £500 as in the calculator. Not a quote.

Common extras and what they add

Extra	Adds (guide)
Reinforced floorFor racks and heavy kit	£1,500 to £3,000
Sound insulationPlaying or recording	£1,000 to £2,500
Shower room / WCNeeds drainage	£5,000 to £9,000
KitchenetteSink, worktop, water	£2,500 to £5,000
Air-conHeating and cooling	£1,500 to £3,000
Extra glazing / roof lightsMore daylight	£1,500 to £4,000
Long power / water runFar from the house	£1,000 to £3,000
Through the houseMaterials carried in by hand	£1,000 to £2,500

Work out your own figure in the cost calculator · Garden room costs guide

What affects the price of a garden room on a Stevenage plot

Builders in Stevenage tell us the same thing every time: the building is only part of the price. The rest is ground, access and services, and those are different on every road in SG1.

Before you compare quotes, check that each one covers the same things from this list, cheapest to dearest: size and height, foundations: ground screws, pads or a slab, cladding and roof finish, amount and type of glazing, distance for power, water and drains and access: can materials reach the garden?. A quote that leaves one of these out is not the same job as one that includes it.

As a worked example, a medium garden office with air-con and extra glazing / roof lights comes to £21,000 to £36,000 in the calculator. Use the cost calculator to build your own combination.

Cedar-lined garden snug with a linen sofa, wool rug and small wood-burning stove beside glazed doors, an example of the kind of garden room builders near Stevenage SG1 are asked for — Cedar-lined garden snug with a linen sofa, wool rug and wood-burning stove. Design idea, not a real project.

Planning in Stevenage: check before you build

The national register lists 4 conservation areas within about 1.5 km of the centre: Old Town High Street, Orchard Road, Shephall Green and Town Square; on designated land such as a conservation area, an outbuilding at the side of a house needs planning permission. Green Belt land lies within about 1.5 km; Green Belt does not by itself remove outbuilding rights and matters only if an application is needed. No register entry within that distance removes the outbuilding right, but the register can be incomplete, so check your street with Stevenage Borough Council.

Planning applications in Stevenage go to Stevenage Borough Council. If you are unsure, ask the council or apply for a lawful development certificate, which confirms in writing that a design is permitted development.

What your builder checks for your plot

The height of the room, and how near it is to your boundary
How far it is from the house, and its floor area
Whether your home is in a conservation area or listed
Whether anyone will sleep in it, because building regulations then apply

General guidance, not legal advice. Check the rules on the Planning Portal and with Stevenage Borough Council.

Permitted development limits for a garden room in Stevenage

Most garden rooms in England do not need a planning application because they count as permitted development, but only inside a set of limits. These are the national limits for outbuildings. They apply to Stevenage homes as they do everywhere else in England, and your builder checks them against your plot before you commit.

It must be single storey, with eaves no higher than 2.5 m.
It can be up to 4 m high with a dual-pitched roof, or 3 m high with any other roof.
If any part is within 2 m of a boundary, the whole building can be no higher than 2.5 m.
Height is measured from the highest ground right next to the building.
It must not sit forward of the front wall of the house (the principal elevation).
All extensions and outbuildings together must cover no more than half the land around the original house.
No verandas, balconies or raised platforms. A platform must be no higher than 0.3 m.
The use must be "incidental" to the house. A bedroom, bathroom or kitchen does not count.

Where the limits are tighter near Stevenage

Some land has stricter rules than the national limits. In Hertfordshire the ones that come up most are listed below. Whether your address is inside one is something to confirm with Stevenage Borough Council.

Conservation areas

An outbuilding between the side wall of the house and the boundary needs planning permission.

National Landscapes (AONB)

The side-wall rule applies. Anything more than 20 m from the house is limited to 10 m² in total. The Chilterns National Landscape covers parts of both Hertfordshire and Buckinghamshire, so check whether your address is inside it.

Listed buildings

Any outbuilding within the grounds of a listed building needs planning permission.

Flats and maisonettes

These permitted development rights do not apply.

Article 4 directions and old conditions

A council can remove permitted development rights in an area, or a past planning condition can remove them for one house.

Building regulations for a garden room in Stevenage

Planning permission and building regulations are different things, and a garden room in Stevenage can need one, both or neither. For building regulations the question is floor area and sleeping space. The bands below apply across England, including Hertfordshire.

Under 15 m² floor area

Building regulations do not normally apply, as long as nobody sleeps in it.

15 m² to 30 m²

Building regulations do not normally apply, as long as nobody sleeps in it and it is either at least 1 m from every boundary or built mostly of non-combustible materials.

Over 30 m²

Outside these exemptions, so building regulations approval is normally needed.

Any size with sleeping space

The exemptions do not apply once a room has sleeping accommodation.

Electrics matter whatever the size. A new circuit to a garden room is notifiable under Part P, so use a registered electrician or ask your builder who certifies it. Building regulations guide

Cedar-clad garden office with black-framed glazing at the end of a lawn, lavender borders in golden light, an example of the kind of garden room builders near Stevenage SG1 are asked for — Cedar-clad garden office with full-height glazing, lit by late-afternoon sun. Design idea, not a real project.

Garden room types in Stevenage

Pick the room you have in mind and see prices, planning notes and questions for Stevenage specifically. Each page uses the same Stevenage Borough Council planning details.

Garden offices in Stevenage

The simplest build: an insulated room with power, lights and heating. From £16,500, fitted, including VAT.

Garden gyms in Stevenage

Heavy kit and hard training need a stronger, cooler room. From £21,000, fitted, including VAT.

Garden studios in Stevenage

Light and sound decide the spec. From £18,500, fitted, including VAT.

Garden annexes in Stevenage

A room someone sleeps in is the biggest step up. From £39,000, fitted, including VAT.

Villages and areas we cover near Stevenage

We match Stevenage homeowners with builders who work across Old Town, Knebworth, Hitchin, Welwyn, Letchworth Garden City and Welwyn Garden City. If your home is on the edge of Stevenage, or in a village outside it, the same page and the same form apply: use the SG1 postcode of your house.

Each nearby town has its own page with its own council and planning notes: Hitchin, Welwyn, Letchworth Garden City and Welwyn Garden City. Rules and councils differ even a few miles apart, so check the page for your own town too.

Guides to read next

Garden rooms in Stevenage: questions people ask

Do I need planning permission for a garden room in Stevenage?

How much does a garden room cost in Stevenage?

Guide prices for a fitted garden office, including VAT: £12,500 to £18,000 small, £18,000 to £29,000 medium, £32,000 to £58,000 large. Gyms, studios and annexes add a little more. These are not quotes: your written quotes show the real figure for your plot.

Does a garden room in Stevenage need building regulations?

Not normally under 15 m² if nobody sleeps in it. From 15 m² to 30 m² it is also normally exempt if it is at least 1 m from every boundary or built mostly of non-combustible materials. Over 30 m², or with any sleeping space, approval is normally needed. You can use the local authority building control service for your area or a registered building control approver.

How many garden room quotes will I get in Stevenage?

Up to 3 written quotes from builders who already work in Stevenage and nearby areas such as Hitchin, Welwyn, Letchworth Garden City. Each one visits for free first. The service is free for homeowners.

Which council handles planning in Stevenage?

Stevenage Borough Council. Your builder checks the rules for your plot before you commit.

Do you cover villages near Stevenage?

Yes. We match homes across Old Town, Knebworth, Hitchin, Welwyn, Letchworth Garden City and Welwyn Garden City. Enter your postcode in the form and we confirm whether builders cover your address.

What does Garden Room Match cost me?

Nothing. The service is free for homeowners. Builders may pay us a fee for each introduction.

How long does a garden room take to build?

Most installs take 4 to 8 weeks once the design is agreed. Lead times change through the year.

Garden room builder measuring a lawn with a tape, wooden pegs and string lines before a free site visit quote, an example of the kind of garden room builders near Stevenage SG1 are asked for — A garden room builder measures the plot with a tape, pegs and string lines. Design idea, not a real project.

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