On a listed building, consent comes before equipment. Listed building consent is a separate question from planning permission, and householder permitted development for heat pumps is the wrong thing to rely on. Professional drawings, a heritage statement and a slow yes or no can add high hundreds to low thousands in fees, then the install itself may cost more because pipes have to be hidden and fixings have to be reversible. 2026 illustrations of a simple house split do not apply until consent is real. Use an F-gas certified company when you do install. A quiet, reversible scheme beats a bold badge on the front elevation.
Consent before any outdoor unit is ordered
Listed building consent controls alterations that affect the character of a listed building, inside and out. Brackets, core holes, trunking and even a prominent indoor unit can be part of that. Conservation areas add a planning layer. A verbal assurance from a fitter is not consent. Budget time. Applications are not an overnight stamp. Buying a discounted outdoor unit and storing it in the hall does not speed the council, and the model you stored may be wrong for the position they will accept.
Drawings, hidden pipes and a longer route
As a 2026 illustration, heritage drawings and application help often sit in the high hundreds, and a complex house with a specialist consultant can move professional fees into the low thousands before installation. The install then carries longer internal routes, colour-matched covers, lime-friendly making good, and sometimes a less ideal plant position that needs a longer pipe.
That longer pipe and a pump, plus careful decoration, can lift the physical job by high hundreds or more against a plain terrace. Scaffold to avoid standing on historic stone is another extra. The badge on the indoor unit is the small line. Do not order plant on the assumption of a yes. Ask for reversible fixings and routes that can be removed later. Front elevations are the hardest place to put a condenser.
Offer photos, a sketch of the pipe route, the outdoor position off the principal front if you can, and a note on noise. Hiding the outdoor unit in a well that starves it of air is not a heritage solution. It is a broken heat pump. The Planning Portal heat pump pages explain ordinary householder tests. Your listed status is why you do not stop there.
Sometimes the installer helps with drawings, and sometimes you appoint a heritage adviser separately. Either way, budget high hundreds to low thousands as a 2026 illustration for the paperwork on anything beyond a tiny, obvious case. A discreet route and a quiet rear position matter more than the logo. Capacity still has to match the room or you will have consented a unit that cannot cope.
F-gas work only after the council has answered
Choose an installer who will wait for consent and who has fitted in sensitive houses. GOV.UK F-gas certification still applies to the refrigerant work on the day it finally happens. Warranty and service access remain your problem after the scaffolding leaves. Energy Saving Trust describes the air-to-air heat pumps you would be consenting, once the position is real.
Frequently asked questions
Can I put a heat pump on a listed house under permitted development?
Do not assume so. Listed buildings need listed building consent for many alterations, and permitted development rights are commonly restricted. Get advice before you order.
Are the consent fees part of the installer's quote?
Sometimes they help with drawings, and sometimes you appoint a heritage adviser separately. Either way, budget high hundreds to low thousands as a 2026 illustration for the paperwork on anything beyond a tiny, obvious case.
Will a smaller indoor unit be easier to consent?
A discreet route and a quiet rear position matter more than the logo. Capacity still has to match the room or you will have consented a unit that cannot cope.
Does storing a discounted unit speed the application?
No. Buying plant and keeping it in the hall does not speed the council, and the model you stored may be wrong for the position they will accept.
Core buying guides
Start with these high-intent guides, then dig into the rest of the library.
Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local AC Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.