Modelling question – Residential units sales in a take home case study

Hi! I came across a take-home case study fora local developer. The case focuses heavily on the sales of residential units.

The test provides - along with general informations - market level data on annual resi sales by price band (e.g., units priced below $500k, between $500k–$1m, etc.) as well as total unit count per band and revenue for the project.

I’m wondering how best to approach the Excel modelling for this scenario. I think they’re looking for something that reflects market dynamics and not high level assumptions (i.e. presale of 70% of the condo units during construction with equal deposits banked each month)

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