Fossil Creek is still building at the southwest corner of Ten Mile and Deer Flat, so most of these houses are inside their first few years and their siding carries something older homes do not: the leftovers of their own construction, plus continuous dust from the roundabout work at the subdivision's front door.
Everyone expects a builder's clean to miss the glass. Fewer people check the siding, where a first-years Fossil Creek house typically carries stucco and mortar splatter, dried texture overspray, sealant smears and a fine cement haze, all of which bonded while the house was being finished. That is genuinely different from dirt. Cement residue is alkaline and it keys into the surface rather than sitting on it, so it needs the right solution and dwell time rather than more force, and it does not come off with a hose.
The Ada County Highway District's rebuild of the Ten Mile and Deer Flat intersection means months of open graded earth and stop-and-go traffic immediately outside the subdivision, which keeps far more particulate airborne than a normal through-road. Homes on the north and east edges take the most of it and it settles on walls as well as glass. That is temporary, and it means the interval matters more than the method: washing now and again in a year beats waiting until the work finishes and letting it bond.
High pressure on siding drives water behind the laps and into the wall assembly, and on a house inside its warranty period that is a particularly poor trade. It can also cut into fresh caulk lines and sealant that has not fully cured, and strip the sheen off new vinyl in a way that shows as a dull patch forever. House washing here is a soft wash at $0.18 per square foot, which cleans the wall without introducing a moisture problem into a building envelope that is still settling.
Fossil Creek has two parks totalling about 7.5 acres, irrigated with untreated canal water. Homes backing onto that open space get more moisture against the wall and more shade from planting, which is what lets algae and mildew establish on north-facing siding. That reads as dirt and is not: it is growth, it will not rinse off, and knocking it down without killing it means it returns faster each season. The solution in a soft wash addresses it properly.
Plans here run 1,447 to 2,710 square feet, a tighter range than most Kuna subdivisions, so wall area and therefore price cluster rather than spreading widely. House washing is $0.18 per square foot of actual wall area. Pressure washing at $0.20 per square foot covers the driveway and patio, and on a new build the concrete frequently has its own construction residue worth doing at the same visit. We quote the two separately.
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Cement residue from the build. Fine cement haze is alkaline and keys into the surface rather than sitting on it, so it reads as a dull film instead of dirt. It will not come off with a hose and it needs the right solution and dwell time rather than more pressure.
Yes, not just the windows. Open graded earth and stop-and-go traffic at the Ten Mile and Deer Flat rebuild keep much more particulate airborne than a normal road, and it settles on siding as well as glass. Homes on the north and east edges get the most.
We will not. High pressure drives water behind the laps into a wall assembly that is still settling, can cut into caulk and sealant that has not fully cured, and can strip the sheen off new vinyl permanently. A soft wash at $0.18 per square foot cleans it without that risk.
It is if you back onto one of the parks. About 7.5 acres of irrigated open space means more moisture against the wall and more shade, which lets algae establish. It is growth rather than dirt, so it will not rinse off, and it returns faster each season if it is only knocked down.
At $0.18 per square foot of actual wall area, and because plans here run 1,447 to 2,710 square feet the prices cluster rather than spreading widely. We measure wall area rather than working from house square footage.
On a new build it is usually worth it, because the concrete often carries its own construction residue. That is pressure washing at $0.20 per square foot, which is the correct tool for flatwork, quoted separately from the $0.18 soft wash on the siding.
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