Can I Build a Bungalow in My Garden?
Yes, you can build a bungalow in your garden, but you will always need full planning permission. There is no permitted development route for a new dwelling. The good news is that single-storey bungalows have some genuine advantages over two-storey houses when it comes to getting approval. Here is exactly what the process involves.
TL;DR - The Quick Answer
Yes, you can build a bungalow in your garden in England, but it always requires full planning permission. There is no permitted development route for creating a new dwelling, whether single-storey or two-storey. The planning application fee is £610 from April 2026, and councils typically aim to decide within 8 weeks. The same requirements apply as for any garden infill development: sufficient plot size (typically 200-250+ square metres of net area), vehicle access from the road, adequate privacy distances from neighbouring windows (usually 21 metres), and retained amenity space for your existing home. Bungalows do have some genuine planning advantages: they cause less overshadowing and overlooking than two-storey houses, which can make approval easier on tighter plots. However, they also have a larger footprint for the same floor area, which limits the garden plots they can fit into.
The Planning Rules: What You Always Need
Building a new bungalow in your garden is subject to the same planning rules as any new dwelling. There is no special route for bungalows, and no permitted development right that allows them. Here is what is always required.
Planning Requirements for a Garden Bungalow
- Full planning permission: A full planning application including architectural drawings, site plan, design and access statement, and supporting documents.
- Sufficient plot size: The new bungalow must have its own private outdoor amenity space, usually at least 50 square metres. The existing home must retain adequate garden too.
- Vehicle access: The bungalow needs its own vehicle access from the public highway and at least one off-street parking space (most councils require two for a 2-bed+ dwelling).
- Privacy distances: Typically 21 metres between facing habitable room windows of the new bungalow and its neighbours (including your own existing home).
- Minimum space standards: The finished bungalow must meet the Nationally Described Space Standards. A 1-bed single-storey dwelling must be at least 39 square metres; a 2-bed at least 61 square metres.
- Building regulations: Separately from planning, building regulations approval is required for the construction. New bungalows must comply with the Future Homes Standard, requiring low-carbon heating and high insulation levels.
Bungalow vs Two-Storey: Which Gets Planning More Easily?
This is the question most garden landowners ask when they start thinking about what to build. The honest answer is: it depends on the specific site, but bungalows do have some genuine advantages.
Advantages of a bungalow
- Less overshadowing of neighbours (lower ridgeline, less shadow cast)
- Less overlooking from upper-floor windows (can improve privacy compliance)
- Perceived as less dominant and more sympathetic in scale to a rear garden context
- Accessible design - appeals to older buyers, and many councils support accessible housing
Disadvantages of a bungalow
- Larger footprint for the same floor area (uses more garden land)
- Less efficient in value terms (fewer square metres per pound of build cost)
- May be out of character in a street of two-storey houses (design argument works both ways)
- Lower GDV (resale value) than an equivalent two-storey house in most markets
The practical verdict: On plots where overlooking or overshadowing of neighbours is the main planning concern, a bungalow can be the difference between approval and refusal. On larger, more generous plots where those concerns are less acute, a two-storey house typically delivers better value and higher sale proceeds.
Minimum Plot Size for a Garden Bungalow
Because a bungalow puts all its floor area on the ground floor, it has a larger footprint than a two-storey house of the same size. This is the key constraint to understand when assessing whether your garden can support a bungalow.
| Dwelling type | Floor area | Approx footprint | Garden needed |
|---|---|---|---|
| 1-bed bungalow | 39-50 sqm | 39-50 sqm ground floor | 300-350 sqm total garden |
| 2-bed bungalow | 61-75 sqm | 61-75 sqm ground floor | 350-450 sqm total garden |
| 3-bed bungalow | 85-100 sqm | 85-100 sqm ground floor | 450-600 sqm total garden |
| 2-bed two-storey house | 70-85 sqm | 35-45 sqm ground floor | 250-350 sqm total garden |
| 3-bed two-storey house | 93-110 sqm | 47-55 sqm ground floor | 300-400 sqm total garden |
Source: Based on NDSS minimum space standards and typical council amenity space requirements • Data as of 2026
The figures above are indicative. The actual minimum plot needed depends on your specific council's standards for boundary setbacks, parking, amenity space, and access. As a general rule, a 3-bed bungalow requires a substantially larger garden than a 3-bed two-storey house. If your garden is on the smaller end (under 400 square metres in total), a two-storey house may be the more viable option.
What Councils Look For: The Main Planning Tests
Character and design
The planning officer will assess whether the bungalow's scale, massing, and design relate appropriately to the surrounding properties. If your street is entirely composed of two-storey Victorian terraces, a bungalow may be considered out of character. Conversely, in a suburban street with a mix of bungalows and two-storey houses, a bungalow is much more likely to be seen as in keeping. Good design can go a long way: a well-designed contemporary bungalow is far more likely to succeed than a poorly designed one, regardless of what else is in the street.
Overlooking and privacy
The key planning test is whether the new bungalow's windows overlook neighbouring properties to an unacceptable degree. Bungalows have a genuine advantage here: all windows are at ground-floor level. Ground-floor windows are easier to screen with fencing, planting, or obscure glazing than first-floor windows in a two-storey house. Many planning officers are more comfortable with ground-floor overlooking being managed through conditions than first-floor overlooking from a taller dwelling.
Overshadowing
A single-storey bungalow casts less shadow than a two-storey house. On east-west oriented plots, a bungalow's lower ridgeline means significantly less shadow impact on the neighbour to the north. This is another genuine advantage in planning terms and can be the deciding factor on constrained plots.
Access and parking
The access and parking requirements are identical whether you propose a bungalow or a two-storey house. You need a vehicle access from the highway and sufficient off-street parking, typically 1-2 spaces depending on the dwelling size and the council's parking standards. For a 2-bed bungalow, most councils require 2 parking spaces as a minimum. For a 1-bed, some councils accept 1 space, particularly in areas with good public transport access.
The 21-metre privacy test
Most councils apply a minimum 21-metre distance between facing habitable room windows. For a bungalow, this means: the windows of your new bungalow must be at least 21 metres from the facing rear windows of your existing house and the facing rear windows of your rear neighbours. In practice, this means the bungalow must sit far enough back in your garden. If your garden is shallower than about 25-30 metres, achieving 21 metres of separation from both directions may not be possible.
Costs: What Does Building a Garden Bungalow Cost?
Total costs for building a new bungalow split into planning costs and build costs. Here is what to expect.
| Cost item | Typical range | Notes |
|---|---|---|
| Planning application fee | £610 | Set by government, from April 2026 |
| Architect (planning drawings) | £3,000 - £10,000 | Design to planning permission stage |
| Pre-application advice | £200 - £600 | Council meeting (recommended) |
| Topographical survey | £500 - £1,500 | Required for most sites |
| Ecology survey | £400 - £1,200 | If garden has trees/hedges |
| Build cost (2-bed bungalow, 70 sqm) | £140,000 - £250,000 | £2,000-£3,500/sqm, varies by region and spec |
| Building regulations | £800 - £2,000 | Local authority or approved inspector |
| Structural engineer | £1,500 - £3,000 | Foundation design and structural elements |
| Utility connections (water, electric, drainage) | £5,000 - £20,000 | Varies significantly by distance to services |
Source: Mayfair Studio, based on market data 2026 • Data as of 2026
Build cost note: Bungalows tend to cost slightly more per square metre to build than equivalent two-storey houses. This is because the roof and foundation cost is spread over only one floor rather than two, making the cost per square metre of usable space higher. A 2-bed bungalow of 70 sqm might cost £140,000-£250,000 to build in England (outside London). The same floor area in a two-storey house would be cheaper per square metre because the roof and foundations are shared across two floors.
Alternatives: What Else Could You Build?
If a bungalow is not viable on your specific plot, or if you want to consider all your options before committing to a design, here are the common alternatives.
Two-storey house
More floor area on a smaller footprint. Better value per square metre. More overlooking risk but manageable on larger plots. Higher resale value in most markets.
Chalet bungalow (one-and-a-half storeys)
A compromise: ground floor plus rooms in the roof space. Smaller footprint than a full bungalow, lower ridge height than a full two-storey house. Can work well where height is a concern but plot size limits a full bungalow.
Granny annexe / ancillary accommodation
If the new building is ancillary to your main house (not capable of independent occupation), it may fall under permitted development without needing planning permission, depending on size. A true granny annexe is usually a smaller, simpler structure than a bungalow and cannot be sold or let as a separate property. See our guide on granny annexe planning permission.
Garden room
A smaller outbuilding that can often be built under permitted development. Cannot be used as a separate dwelling. More limited in scope but much faster and cheaper if ancillary use is all you need. See our comparison of garden rooms and extensions.
The Planning Application Process: Step by Step
Whether you propose a bungalow or a two-storey house, the planning process is identical. Here is what it involves.
Feasibility and pre-application (1-4 weeks)
Assess your garden for development potential. Book a pre-application meeting with the planning authority to get their informal view before committing to design costs.
Design and surveys (4-8 weeks)
Appoint an architect. Commission any required surveys (topographic, ecology, drainage). Develop the bungalow design based on the pre-application feedback.
Planning application (8-13 weeks)
Submit to the council. The 8-week statutory target often extends to 12-13 weeks for garden infill applications due to the neighbour consultation period and officer workloads.
Discharge conditions and building regs (4-8 weeks)
Satisfy any conditions attached to the planning approval (materials, landscaping, drainage details). Submit a separate building regulations application for the structure and services.
Construction (16-30 weeks for a bungalow)
Appoint a contractor, start on site. Building control inspects at key stages. On completion, you receive a building regulations completion certificate.
Total from start to move-in: Realistically 18-24 months. The planning and design phase takes 6-12 months before construction begins. For a full breakdown of the planning process, see our guide on planning permission for building a house in your garden.
Building a bungalow in your garden always requires full planning permission in England. There is no permitted development route for any new dwelling, single-storey or otherwise. Bungalows have genuine planning advantages on constrained plots because they cause less overshadowing and overlooking than two-storey houses. However, their larger footprint means they require a bigger garden than an equivalent two-storey house, and they typically achieve a lower resale value per square metre. The minimum total garden size for a viable 2-bed bungalow scheme is typically 350-450 square metres, compared to 250-350 square metres for a 2-bed two-storey house.
Frequently Asked Questions
Can I build a bungalow in my garden without planning permission?
No. Building a new bungalow in your garden always requires full planning permission. There is no permitted development right for any new dwelling in England, regardless of size or height. Permitted development covers certain extensions, outbuildings, and conversions, but not new standalone dwellings.
Is it easier to get planning permission for a bungalow than a house?
On some plots, yes. Bungalows tend to have less impact on neighbours in terms of overshadowing and overlooking because they are single-storey. On tight plots where a two-storey house would fail the privacy or overshadowing tests, a bungalow may succeed. However, bungalows also have a larger footprint for the same floor area, which can create problems on smaller gardens. The answer is highly site-specific.
How big does my garden need to be for a bungalow?
As a rough guide, your total rear garden needs to be at least 350-450 square metres to accommodate a 2-bed bungalow while retaining adequate amenity for your existing home. You also need sufficient garden depth (at least 25-30 metres from your house to the rear boundary) to achieve the 21-metre privacy distance from your existing rear windows. Plot width needs to be at least 8-10 metres.
Can I build a bungalow at the bottom of my garden to sell?
Yes, provided planning permission is granted. A new bungalow can be sold as a separate property once planning permission is obtained and the title is legally split. This is a straightforward transaction from a conveyancing perspective, though you will need to deal with capital gains tax on the sale of the land and potentially the new dwelling, depending on your circumstances.
What is the minimum size a bungalow can be?
Under the Nationally Described Space Standards (NDSS), the minimum floor area for a 1-bed single-storey dwelling is 39 square metres. For a 2-bed bungalow, the minimum is 61 square metres. These are national standards; some councils apply stricter requirements locally. Note that a 39 sqm bungalow is very small in practice and unlikely to achieve good resale value.
Can I convert a large garden room or outbuilding into a bungalow?
Changing the use of an existing outbuilding from ancillary storage to an independent dwelling requires planning permission. It is a material change of use regardless of whether the building already exists. Some outbuildings on rural plots may be eligible for conversion under Class Q permitted development, but this does not apply to garden outbuildings in residential areas.
Summary
You can build a bungalow in your garden, but full planning permission is always required. Bungalows have some genuine advantages over two-storey houses in planning terms, particularly on plots where overshadowing and overlooking of neighbours are concerns. However, their larger footprint means you need a bigger garden than you would for an equivalent two-storey house.
The minimum viable garden is approximately 350-450 square metres in total for a 2-bed bungalow. The process from feasibility to completion takes 18-24 months and involves planning permission, building regulations, surveys, and construction.
For more on assessing your garden's development potential, see our guide does my garden have development potential. For the full planning application process, see planning permission for building a house in your garden.
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