On-Site Build vs. Transported Granny Flats: Why Building On-Site Wins

When choosing a granny flat, one of the biggest decisions is whether to build on-site or purchase a pre-built unit that gets transported to your property. While many cottage companies prefer to build in their own yard and transport the structure to you, and we can absolutely complete a granny flat build for you in this way, this method is often more beneficial for the company… not necessarily for you. Here’s why an on-site build is the smarter choice:

1. More Cost-Effective Overall

At first glance, a transported cottage might seem convenient, but hidden costs can quickly add up. Cranes, oversized load permits, pilot vehicles, and site preparation to accommodate transport can significantly increase your total spend. Building on-site eliminates these extra expenses, giving you better value for money.

2. No Risk of Damage from Transport

Moving a fully built structure isn’t as simple as it sounds. The process involves lifting, loading, and maneuvering the cottage into place, which can cause structural stress. Worse, dropping a granny flat into your backyard with a crane can feel like an earthquake ripping through your main home—leading to potential foundation issues, cracked driveways, and property damage. Not to mention, if your granny flat is dropped onto the piles it can cause damage to your brand new second dwelling before it has even been lived in. With an on-site build, everything is constructed securely from the ground up, exactly where it needs to be.

3. Customisation Without Limits

When you choose an on-site build, your granny flat can be tailored to suit your property perfectly. Transported units are limited by size restrictions for roads, bridges, and load weight, meaning they often have to be smaller and less customisable. On-site builds allow for greater flexibility in design, orientation, and materials to match your home and landscape seamlessly.

4. No Surprise Installation Issues

Pre-built cottages must be transported and positioned correctly, but unexpected obstacles—like tight access, power lines, or uneven ground—can make installation difficult or even impossible without costly site modifications. On-site construction avoids these complications, as the build is planned and executed specifically for your property.

5. Better Long-Term Structural Integrity

A granny flat built on-site is structurally designed to last, with solid foundations that won’t shift or settle improperly. Transported units must endure the stresses of being lifted and moved, sometimes weakening joints and connections before they even arrive at your property. With an on-site build, you get a home that’s constructed with longevity in mind.

The Bottom Line: Build Smart, Build On-Site

While transported cottages might look appealing at first, the hidden risks, extra costs, and potential damage can make them a less-than-ideal option. Building on-site ensures a secure, high-quality, and cost-effective granny flat that’s tailored to your needs—without the headaches of transport logistics.

At Canterbury Cottages, we specialize in on-site builds, offering a hassle-free process with better outcomes. If you’d like to discuss the best option for your property, get in touch today!