What site work costs, and what drives it
The allowance
We add 10% to 35% to the home price to cover foundation, site work, utility connections to the lot, permits and impact fees. That is the band you see on every model page.
It is an allowance, not a quote. A flat, serviced lot with good soil lands near the bottom. A steep lot with heavy clay and no utilities at the property line lands near the top, or above it.
The five factors that move it
These are the drivers we resolve for a specific parcel before anyone commits to anything. Every one of them is knowable from public data plus a site visit.
| Factor | Why it moves the number |
|---|---|
| Soil clay content | High-clay soils shrink and swell with moisture, so they demand a stiffer, more expensive foundation. |
| Hydric ground | Ground that holds water needs drainage work before anything is poured. |
| Slope | A flat pad is cheap. Every degree of grade adds excavation, retaining and drainage. |
| Flood zone | A mapped flood zone can require elevation, which changes the foundation and the insurance. |
| Utility access | Municipal water, sewer and power at the property line are the cheap case. A long private run is not. |
How to find out for your lot
Checa Discover resolves these factors against real parcel data, so you can see what a lot demands before you buy it rather than after. The firm site number comes at design freeze, after a free site review.
The band is the home price plus a typical site allowance of 10% to 35%. It is an estimate, not a quote. The firm number exists only at design freeze, after the site review.
- How much does site work cost when building a home?
- Typically 10% to 35% of the home price, covering foundation, site work, utility connections and permits. The figure depends on the lot: soil, slope, flood zone and utility access are the main drivers.
- Can you quote site work before seeing the lot?
- Not firmly, and anyone who does is guessing. We resolve soil, slope, flood zone and utility access from parcel data to narrow the band early, then confirm the number at a free site review before design freeze.
What it costs to build an ADU in Austin
Real prices for a backyard home: $55,000 to $95,000 all-in, and what moves the number.
What a Checa home costs per square foot
$80 to $188 per square foot all-in, and why the number falls as the home gets bigger.
Exactly what the price includes
Line by line: what is in the home figure, what sits in the site allowance, and what is separate.
What each upgrade actually costs
A second bathroom is $5,400. An extra square foot is $36. The real price of every decision.
What it costs to build a house in Austin
A complete, finished home from $50,000, or $55,000 to $120,000 all-in. What that covers and what land adds.