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Real survey case study (anonymised)

Semi-detached ASHP survey with extension complexity

A semi-detached PE-area house with multiple extensions, two ASHP siting entries, and a layout that needed spelling out properly.

Survey record baseline

Property typeSemi-detached house, 2 floors, 15 rooms (4 bedrooms, 2 bathrooms)
Age band1950-1966
Current fuelLPG at survey stage with gas-boiler-regular baseline
ElectricalSingle phase, 100A main fuse, meter and consumer unit in garage
Plan referencePlanUp ID 697148905 with 4 floorplan captures
Survey recordID 2fff11e6-f63f-47a1-af36-529767b6e371 (anonymised public write-up)

Why this extension-heavy job needed a clear report

What was captured in the report

Layout context

The altered layout was recorded clearly enough that nobody had to guess.

Electrical baseline

Garage meter and consumer-unit detail stayed with the rest of the technical evidence.

Siting references

ASHP siting entries stayed linked to the floor plans and room detail.

Extensions make messy reports worse

When a house has been altered several times, the layout needs to be obvious. Otherwise the team starts making assumptions and the calls begin.

PlanUp reference 697148905 and the four floor-plan captures gave office and design teams one shared map of the job before scheduling.

What the installer got out of it

On extension jobs, a clear report protects quote speed and cuts down the design back-and-forth that usually follows a messy survey.

Why extension-heavy homes need stronger survey context

Extension-heavy properties are where simple survey notes can become misleading. The outside shape, room layout, construction changes, and heating context may not line up neatly, so the report has to show the actual property rather than a generic house type.

Layout risk

Floor-plan evidence helped the team see how the extensions changed the job before any heat pump design assumptions were made.

Design risk

Visible room context reduced the chance of the designer treating a mixed property as if it had one simple construction story.

For installers, that is the difference between a report that only confirms attendance and a report that actually supports the next decision. The altered layout, heating context, and survey notes need to explain why the property is not a standard semi-detached template, and what questions should be checked before the quote reaches the customer. That is especially important when the office has to make a quick decision from the report alone, without more site context or second-visit commentary.