Does a Well, Power or a Paved Road Raise Arizona Land Value?

Yes for a well, a septic system, city water and a paved road, weakly for power at the lot, barely for a view, and not at all for a no-HOA label, but how much depends mostly on the county. On Arizona parcels of 2 to 40 acres, sales whose listing mentioned a well closed at a median of 1.84 times the county-and-size median price per acre. Those are ratios from recorded sales, not a price list, and they are not a promise for your parcel.

How we measured it

We took the vacant parcels that sold in Arizona over the 24 months ending August 31, 2026 and matched each to the feature words in its listing description: well, power at the lot, paved access, septic, fenced and a few others. Each sale's price per acre was divided by the median price per acre of vacant sales in the same county and the same size band. A ratio of 1.00 means it sold like its neighbors. The figure shown is the median ratio for all sales with that feature, with a 95 percent bootstrap interval, and any feature with fewer than 25 sales in a cell is left out.

This is a feature mentioned in the listing text, not a feature inspected on the ground. A "well" could be a shared well, a dry hole or a permit that was never drilled. Treat the results as how the market priced the claim.

What the 2 to 40 acre sales show

For comparison, all sales in this band that had any feature data came in at 1.04. Mobile homes allowed (142 sales, 0.86) and power "nearby" rather than at the lot (252, 1.03) are inside the noise.

The well: the same word, a 4x or a 0.8x

The well premium is the one worth reading by county. Among 2 to 40 acre sales, a mentioned well came in at 4.21 in Navajo County (36 sales), 3.98 in Mohave (47), 3.56 in Apache (60), 2.19 in Yavapai (160), 1.71 in Cochise (39), 1.49 in Pinal (83), 1.21 in Coconino (26), 1.16 in Maricopa (74) and 0.83 in Pima (72).

The pattern fits a simple reading: a well earns the most in the counties where listings for large parcels so often say no water. In Mohave, Navajo and Apache a mentioned well changes the buyer's cost picture. In Maricopa and Pima it barely separates one sale from the next. We have not measured why, so treat that reading as a guess.

Before you advertise a well, find it on paper. The Arizona Department of Water Resources keeps well records and a map of registered wells, and drilling starts with a Notice of Intent to Drill filed with the department. A registry number and a driller's log are the proof a buyer will ask for. If you have no well and no water, the parcel without water rights page covers what that does to your options.

Power, road and septic

Power at the lot comes out at 1.20, and the interval runs from 1.01 to 1.42, so it is a small premium at best. A listing that says power can mean a pole at the lot line or a quoted line extension, and the text cannot tell them apart. In Mohave the mention reached 2.27 (49 sales), while in Pima it was 0.65 (39) and Yavapai 0.89 (60).

Paved access sits at 1.45, and county variation is wide: 2.88 in Mohave (62), 1.57 in Yavapai (133), 1.36 in Maricopa (52) and 1.04 in Pinal (75). Dirt access goes the other way, at 0.82. A septic system already in place gets 1.57, but mostly from Mohave (2.78 on 43 sales) and Apache (2.55 on 26); in Pinal and Yavapai it sat below 1. If your lot cannot get a septic permit at all, failed perc tests are a separate page.

Fencing at 2.36 is the number to be most careful with. A fence on 2 to 40 acres often goes with a homesite, corrals or a ranch property, so the fenced listings may be better parcels in other ways. The data cannot tell you what a fence adds.

Under an acre, the picture changes

On parcels under one acre, 15,011 sales, the picture nearly flips: power at the lot 0.63 (420 sales), paved access 0.61 (555), city water 0.64 (310), septic 0.75 (176). A well was a neutral 1.03 on only 109 sales. Small platted lots plausibly have power, pavement and water as the default, so a mention may separate nothing there. We do not read those under-1.00 numbers as a penalty. We read them as a sign the comparison needs the rural, large-parcel setting to mean anything.

What this means if you are selling

Document, do not install. The numbers show how the market prices a feature that exists and is proven. They do not show that installing one pays for itself, and we have no sourced drilling, trenching or fencing cost to put against them.

Gather the paper: the ADWR well registry number and any driller's log, a utility letter on power at or near the lot, the recorded easement or county road map that proves legal access, and the septic permit if one exists. Flood status is the other fact that can cut a price on a parcel with a creek or wash, covered in floodplain land. For a number on your own parcel, the land-value estimator starts from the county and size band, and the per-acre medians for every county are on Arizona land prices per acre. For what separates one desert parcel from the next on the ground, see selling desert land.

Questions

Does a well increase land value in Arizona? On 2 to 40 acre sales it did: parcels whose listing mentioned a well sold at a median of 1.84 times the county-and-size median price per acre. In Navajo, Mohave and Apache the ratio was 3.5 to 4.2, and in Pima it was 0.83.

How much does power add to land value? The listing mention of power at the lot comes out at 1.20 times the matched median on 2 to 40 acres, with an interval from 1.01 to 1.42. We do not have a dollar figure for a line extension.

Does a paved road raise the price? Yes on 2 to 40 acre parcels: 1.45 times the matched median. The gap is largest in Mohave County and close to zero in Pinal.

Can I rely on these ratios for my own land? No. They are medians across recorded sales and each depends on what a listing said. Use them to decide what to document and what to ask a buyer, not as an appraisal.