Small dwellings
Heating for annexes, park homes and outbuildings
Small separate dwellings raise a question a main house doesn't: whether to extend the existing system or install something independent. Metering, tenure and fuel availability usually decide it.
For: Annexe and park home owners
Independent or shared?
Extending the main house circuit is cheaper to install but impossible to meter and awkward if the annexe is later let. An independent appliance costs more upfront and gives complete separation. Off the gas grid — common across the Mendips and Chew Valley — the realistic choices are LPG, oil, or electric with good insulation.
What the survey settles
- Whether the main boiler has genuine spare capacity
- Fuel options actually available at the property
- Flue and ventilation feasibility in a small building
- Separate control and, where required, separate metering
Frequently asked
- Can I run the annexe off the house boiler?
- Often technically yes, with a separate zone. It's the letting and billing implications that usually rule it out.
- Is LPG expensive to run?
- Per unit it costs more than mains gas but suits small demands where oil storage isn't practical.
- What about a small oil boiler?
- Workable where there's room for a compliant tank. We'll assess siting distances at survey.
Decide on tenure first
The right technical answer depends on how the annexe will be used. Tell us that and the specification follows quickly.
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