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How long does it take to build a granny flat?

Written by Clayton Bielby

Updated at April 5th, 2025

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With Expandify, the process from contract to delivery generally takes 14–20 weeks, which includes:

Preliminary Stage (1–3 weeks): Prelim report, site data collection, and quoting

Contract & Manufacturing (8–9 weeks): Batch production offshore

Shipping & Delivery (6–7 weeks): Includes customs clearance and transport to site

Installation (0–4 weeks): Timing depends on builder availability and weather

Traditional site-built homes may take 4–6 months or longer. Expandify’s factory-controlled process allows faster delivery and reduced delays.

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