Galaxy Technical Services App
We partnered with Galaxy Insulation to build the GTS app, capturing the photographic evidence Part L requires as the work happens on site.
- Client
- Galaxy Insulation
- Year
- 2023

The brief
Part L requires photographic evidence to be captured during construction and submitted with the BREL report. Collected on a phone camera and assembled later, photos go missing, arrive unlabelled, or turn out to show the wrong plot, and it is usually the submission deadline that reveals it.
What we built
An app for housebuilders. A user signs in, selects a project, and uploads photographic proof as construction progresses, each image carrying its location, date and description.
It is built around what On Construction Domestic Energy Assessors actually need: better information for building control bodies and homeowners, and evidence solid enough to improve the accuracy of the energy calculations that depend on it.



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We build compliance tools, calculators and apps for the construction industry, usually in partnership with the people who will use them.