The Home Arrives Finished — The Site Doesn't
One of the biggest advantages of a prefab home is that the building itself is completed indoors, protected from weather delays. But before the home ever leaves the factory, your lot has to be ready to receive it. Site preparation is the half of the project most buyers underestimate — and where good planning pays off the most.
Know Your Lot Before Anything Else
Every project starts with understanding the land: zoning and setback rules with your city or county, how utilities reach the site, and the soil and grading picture. Rules vary by city and county, so the local planning office is always your first real conversation — before you fall in love with a floor plan.
The Foundation Comes First
Prefab homes are set on permanent foundations, just like site-built houses — typically a perimeter foundation or engineered system designed for your soil conditions and the specific home model. The foundation is poured and cured before delivery day, and it's engineered to receive the home's structure exactly as designed. This is one of the reasons modern prefab homes are permitted and financed the same way as conventional construction.
Utilities Have to Meet the Home Halfway
Water, sewer or septic, electrical, and gas must be stubbed to the right locations before the home is set. Each model has specific utility points, planned from the home's engineering documents — not guessed at. Running lines after the home arrives is far more disruptive, so this step is scheduled into the site work upfront.
Access Matters More Than You Think
The home arrives on trucks and is placed with a crane or specialized equipment, so the delivery path — road width, overhead clearance, turning radius, ground stability — must be evaluated in advance. Tight urban lots and rural driveways each have their own quirks. A professional site evaluation spots access issues early, while they're still easy to solve.
Permits Run in Parallel
While the home is being built in the factory, the permit process for your lot moves forward at the same time — grading permits, foundation permits, utility connections, and the building permit itself. That's the quiet superpower of the prefab process: two tracks of work happening simultaneously instead of one after the other. Rules vary by city and county, and your local jurisdiction sets the pace.
Ask These Questions Early
- What's my lot's zoning, and what setbacks apply?
- How do water, sewer, and power reach my site?
- What foundation type does my soil and home model require?
- Can delivery trucks and a crane reach the build location?
- Which permits does my city or county require, and in what order?
Start With a Site Conversation
Thinking about a prefab home? Get a free consultation with American Dream ADU — we'll walk through what your specific lot needs, so there are no surprises when delivery day comes.
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Please note: This article is for general information only. Rules vary by county and city — always check with your local county or city planning office for the specific rules that apply to your property before making decisions.