Cornwall has a large number of bungalows, many built in the decades after the war on generous plots, often in great locations near the coast or in quiet villages. They make excellent starting points for a renovation. Single-storey homes are often simpler to extend, have roof space that can be put to use and can be reconfigured more freely than many older houses. This guide looks at the main ways to transform a bungalow in Cornwall and what to check before you start.
Why bungalows suit renovation
Bungalows have some natural advantages when it comes to building work:
Larger plots often leave room to extend outwards without losing too much garden.
Roof space can sometimes be converted into extra bedrooms and bathrooms.
Internal walls in many bungalows are easier to remove or move, subject to structural checks, opening up layouts.
Level access makes them popular for people planning to stay long term, and a renovation can keep that benefit while adding space.
Option 1: Convert the loft
If the roof has enough height, a loft conversion is often the most cost-effective way to add space. Dormer windows, either to the rear or both sides, can increase headroom and turn a chalet-style roof into usable rooms. Key things to check include:
The head height at the ridge and the pitch of the roof.
The type of roof structure, as some trussed rafter roofs need more structural work to open up.
Where a staircase can fit without losing too much space downstairs.
Fire safety and escape routes, which Building Regulations require for new habitable rooms.
Our loft conversions guide covers this in more detail.
Option 2: Extend at ground level
A single-storey rear or side extension can create a large kitchen, dining and family space, a main bedroom suite or a home office, all while keeping living on one level. Pitched roofs that match the existing house, or flat roofs with roof lanterns, are both common. See our home extensions page for the types of extension we build.
Option 3: Add a storey or rebuild the roof
Some owners go further and add a full first floor or raise the roof to create a dormer bungalow or a two-storey house. This can transform a property, but it's a bigger project:
Structure: existing foundations and walls must be able to take the extra load. A structural engineer will usually need to assess them, and underpinning or strengthening may be needed.
Planning: adding height usually needs planning permission. Some houses can add storeys under permitted development with prior approval from the council, but this has conditions and doesn't apply in places such as conservation areas and National Landscapes, which cover a large part of Cornwall.
Neighbours: overlooking, loss of light and the look of the street will be considered by the council.
At this scale, it's worth comparing costs with a full rebuild, which in some cases may be the better option. Our new builds page explains how we approach those.
Option 4: A full internal remodel
Sometimes the space is already there but the layout doesn't work. Opening up a kitchen and living area, reorganising bedrooms, adding an en-suite and improving natural light can change how a bungalow feels without extending at all. Our property renovations page covers this kind of project.
Improve energy efficiency at the same time
Many older bungalows have limited insulation, older windows and inefficient heating. A renovation is the ideal time to improve the building fabric, for example upgrading insulation in walls, floors and roof, improving airtightness and ventilation, and preparing for a heat pump. Our sustainable building and eco homes page has more on what's possible.
Planning and Building Regulations
Whatever you choose, check the planning position early. Some extensions and loft conversions can be done under permitted development, but rights are reduced or removed in conservation areas, National Landscapes and on some newer estates where planning conditions apply. Building Regulations approval is needed for most structural work, loft conversions and extensions. Our guides to planning permission in Cornwall and Building Regulations in Cornwall explain both processes.
Costs as general guidance
Costs depend on the size of the project, the structure of the existing building, access and the finishes you choose. As a rule of thumb, internal remodelling and loft conversions usually cost less than extending, and adding a full storey is generally the biggest investment because of the structural work involved. A detailed survey and drawings let builders price accurately, so it's worth getting those done before comparing quotes.
Bungalow renovation FAQs
Can I live in my bungalow during the work?
For smaller projects, often yes. For a loft conversion or major structural work, especially adding a storey or replacing the roof, many people move out for part or all of the build.
Is it worth adding a second storey to a bungalow?
It can be, particularly where the plot and location are strong, but structural and planning checks are essential. Compare the costs with alternatives such as a loft conversion or a rebuild.
Will I need a structural engineer?
For loft conversions, removing load-bearing walls and adding storeys, almost always. Their calculations are also needed for Building Regulations approval.
Talk to us about your bungalow
Cornish Building Company renovates, extends and rebuilds homes across Cornwall. Call us on 01208 816991 or contact us to talk through the options for your bungalow.
