Foundation Repair in Mountain View Ranches, Arizona

Foundation repair in Mountain View Ranches is rural work. This is unincorporated Coconino County east of Flagstaff — large parcels, private wells and septic, unpaved access on many properties, and a housing mix weighted toward manufactured homes on permanent foundations and owner-built structures.

The good news about rural properties is that the most effective foundation fix out here is usually the cheapest one: you have room to move water somewhere else.

Cinder country

This area sits on the volcanic ground that dominates the country northeast and east of Flagstaff — cinder and ash deposits over basalt, laid down by the San Francisco Volcanic Field, with the most recent significant eruption at Sunset Crater about a thousand years ago.

Cinder is porous, lightweight, and compressible. It drains rapidly, which is genuinely useful — it means less water held in the soil to freeze and heave, and it means surface water disappears fast. But it also means water moves through it quickly, and moving water carries fine material with it. A concentrated water source, such as a downspout discharging next to a footing or a leaking well line, will erode a void under a footing faster in cinder than in almost any other soil.

Depth to competent bearing is also highly variable out here. Basalt may be four feet down at one corner and considerably deeper at another. On a large lot with a long building footprint, that variation is exactly what produces differential settlement.

Manufactured home foundations

This is the most common work we do in rural Coconino County, so it is worth explaining properly.

A manufactured home on a permanent foundation sits on a series of individual piers, each carrying load to its own footing, rather than on a continuous perimeter footing. Coconino County has specific requirements for these, including that footings reach the frost line — 30 inches into undisturbed soil in most of the county. County guidance is explicit that frost-protected shallow foundations are not permitted for these crawlspaces, because the space cannot maintain the required minimum temperature.

When piers are set too shallow, or on inadequate pads, or on poorly compacted cinder, they settle and heave independently. The symptoms are distinctive:

• Floors that develop waves rather than a single consistent slope.
• Doors that bind in one section of the home while others work fine.
• On a double-wide, separation opening along the marriage line — a gap in the ceiling seam or the floor joint down the middle.
• Exterior skirting cracking or pulling away in specific spots.
• Windows going out of square in one section.

The repair is usually re-supporting and re-leveling the affected piers, sometimes with new footings at proper depth. It is far less expensive than site-built foundation repair, and it is very fixable — provided you get to it before the steel frame takes a permanent set.

Wells, septic and long utility runs

Rural properties have more buried water infrastructure than city lots and more distance for something to go wrong in. A slow leak in a well line running two hundred feet across a property is an efficient way to erode cinder, and it can run for years without anyone noticing a change in the water bill because there is no water bill.

Septic leach fields concentrate moisture in one area. Where they sit close to a structure, that is a persistent differential moisture source.

The advantage of acreage

Here is the honest upside. On a small lot in town, drainage correction is constrained — there is nowhere to put the water and nowhere to put the snow. On acreage, you can regrade properly, run downspout extensions as far as they need to go, cut a swale to intercept uphill flow, and pile snow a hundred feet from the house instead of ten feet. Those are inexpensive fixes and they address the root cause of most foundation problems in this region.

We would much rather solve your problem with a skid steer and an afternoon of grading than with steel piers.

What we check out here

• Individual pier elevations on manufactured homes; whole-floor elevation on site-built.
• Actual footing depth, exposed and measured.
• Well lines, pressure tanks and septic position.
• Where the driveway and site grading route runoff.
• Snow storage location.
• Outbuildings and additions, and how they connect to the main structure.

Permits

This is unincorporated Coconino County, so the county handles permitting, including manufactured home foundation requirements. Verify any contractor license and complaint history free at roc.az.gov before hiring.

Nearby work

• Doney Park
• Leupp
• Bellemont
• Underpinning
• Sinking foundations
• All service areas