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Class 8121 - General cleaning of buildings

PSIC Class 8121 covers General cleaning of buildings. Current child subclasses include General Cleaning of Buildings. This four-digit layer is useful when comparing neighboring activities before landing on the...

Level Class
Hierarchy depth 4/5
Children 1
Last verified 2026-05-12
About this level

Practical summary

Class 8121 sits in the PSIC 2019 hierarchy under N Administrative and Support Service Activities > 81 Services to Buildings and Landscape Activities > 812 Cleaning activities. This class usually fans out into more specific subclasses such as General Cleaning of Buildings. It is the level people use when they already know the activity family but still need the exact five-digit match.

Administrative context

Where this code is used

This class is used when a business can already narrow the activity family and only needs to compare the final subclasses such as General Cleaning of Buildings. It is the level most often checked before a five-digit decision is finalized.

Selection note

How to choose it

Use this class to choose between its final subclasses such as General Cleaning of Buildings. If two options look close, compare the exact activity, the outputs and the way the business actually earns revenue.

Official note

Source-backed description

This class includes: General (non-specialized) cleaning activities of all types of buildings, such as: offices; houses or apartments; factories; shops; institutions General (non-specialized) cleaning of other business and professional premises and multiunit residential buildings These activities cover mostly interior cleaning although they may include the cleaning of associated exterior areas such as windows or passageways. This class excludes: Specialized interior cleaning activities, such as chimney cleaning, cleaning of fireplaces, stoves, furnaces, incinerators, boilers, ventilation ducts, exhaust units, see 8129.

FAQ

What does PSIC Class 8121 cover?

PSIC Class 8121 is the four-digit layer that sits just above the final subclasses and usually defines the activity family for General cleaning of buildings.

How do I compare Class 8121 with the sibling classes?

Read the neighboring classes and compare the exact wording of the child subclasses. Nearby options include 8129 Other building and industrial cleaning activities.

Why does Class 8121 matter for a filing decision?

It is usually the last broad checkpoint before the five-digit subclass choice, so it is the right place to catch near-miss classifications.