The decision library / Original worked example
Compare the finished project.
A lower shell price can leave a larger decision behind it.
Both illustrated routes reach $106,000 before unresolved costs.
| Cost line | Shell / USD | Finished / USD |
|---|---|---|
| Quoted home or shell | 45,000 | 90,000 |
| Finish materials | 25,000 | Included |
| Hired finishing labor | 18,000 | Included |
| Delivery | 6,000 | 4,000 |
| Illustrated subtotal | 94,000 | 94,000 |
| Same separately quoted site work | 12,000 | 12,000 |
| Known subtotal with site work | 106,000 | 106,000 |
Make the specification the same first.
A shell and a finished home are different scopes. List the insulation, interior finishes, fixtures, appliances, systems, testing and handoff work you expect. Then assign each line to the shell supplier, a contractor or yourself.
Our original example adds $25,000 of finish materials, $18,000 of hired labor and $6,000 of delivery to a $45,000 shell. That gives $94,000. A $90,000 finished home plus $4,000 delivery reaches the same subtotal. The same $12,000 site-work quote brings each to $106,000.
A tie in the subtotal is not a tie in the decision.
Record your own hours, completion schedule, responsibility for rework and the cash needed before the home is usable. Do not price your time at zero by omission. Specifications and responsibilities must match before the totals are comparable.
Keep unresolved lines open.
Tax, permits, financing and contingency are outside this example. Mark them unknown until you have the appropriate information. These teaching figures are not market estimates, supplier offers or a completed budget.
For a live example of distinct buying paths, California Tiny House describes finished homes and partial builds. Confirm current scope directly with any supplier you consider. Checked October 13, 2026.
Watch the method.
Original illustration. Michael synthetic narration.
Read the video transcript
A forty-five-thousand-dollar shell can look cheaper than a ninety-thousand-dollar finished home. Now compare the work left to do. In this illustrative example, materials add twenty-five thousand, hired labor eighteen thousand, and delivery six thousand. That shell reaches ninety-four thousand. The finished home plus four thousand in delivery also reaches ninety-four thousand. The same site work brings both subtotals to one hundred six thousand. These are teaching numbers, not builder quotes. Taxes, permits and other unknowns still need work. Compare specifications, your time and who is responsible for finishing. Then save your own numbers in the All About Tiny Homes planner.
Keep the useful part
Save the key points.
Three visual summaries for your planning notes. Download a PNG or open the full-size card. The figures are illustrative; use the worked example above and your own inputs for the next decision.
Put the method to work
Make the next decision yours.
Use your own figures in the free planner. Compare supplier scope and track the contract you choose with the $39 Decision Kit.


