Does the Westerville Asphalt Plant Hurt Home Values?

Ohio EPA set the date. The public hearing on the Scioto Materials air permit is October 21 at 6 p.m. at the Westerville Community Center, 350 N. Cleveland Ave., and the written comment period runs through that same day. So the question people ask me at open houses north of 270 has a deadline on it now. Does the asphalt plant cost you money on your house? I pulled every 2026 closing in rings around the plant parcels, 233 of them inside a mile and a half, and the answer is no, not in the closings. Single family homes inside a mile and a half sold at a median $330,000 and $221 a square foot this year, in 11 days from MLS entry to contract, with 46.4 percent of them closing above the original asking price. That is the highest over-ask share of any ring in this comparison.

The raw table looks like a discount. Most of that discount turns out to be condominiums and square footage, and I will show you exactly where it goes. I also tried to measure the downwind side against the upwind side and could not, for a reason worth reading before you argue either side of this permit.

When Is the Hearing, and How Do I Comment?

Ohio EPA's public notice for permit P0140330 puts the hearing on October 21, 2026 at 6:00 p.m. at the Westerville Community Center, 350 N. Cleveland Ave., Westerville, OH 43082. The same notice says the public comment period runs through October 21, 2026, so written comments and the hearing close together.

Three ways in, all from the notice:

1. The online form at ohioepa.commentinput.com. Search the facility name or permit number P0140330.
2. Mail to Ohio EPA-DAPC-CDO, 50 West Town St, Suite 700, Columbus, OH 43215.
3. In person at the hearing on the 21st.

Comments filed before the earlier August 1 deadline stay in the official record, so nobody has to re-file. This is the second bite. The first comment period closed August 1 and Ohio EPA opened this one with an action date of September 17.

If you own inside a mile and a half of that interchange, this is the one window where the thing you smell on a Tuesday afternoon becomes part of a permit file. Eight days.

What Is Ohio EPA Deciding?

The plant's air permit, a federally enforceable permit to install and operate, comes up for renewal every five years. Ohio EPA's own notice describes the action in one line: renewal FEPTIO for a 400 ton per hour hot mix asphalt plant, at 6187 Westerville Rd., Columbus, OH 43081, Franklin County. NBC4 reported that the draft permit would let the plant produce up to 600,000 tons of hot mix asphalt a year.

On the first comment period, Ohio EPA told ABC6 it had received 21 comments in the first 28 days and had logged 50 complaints about the site since May 2024. The agency also said repeated inspections found the facility operating within its permit and its monitored emissions meeting state and federal air quality standards. Scioto Materials' spokesman told the station the renewal application reflects the company's commitment to operating in compliance with all applicable environmental regulations and standards.

The complaints are specific. NBC4 reported residents describing nausea, dizziness, burning noses and chest, body weakness, depression and anxiety, and said Citizen Pollution Watch, the resident group founded in 2015, has collected hundreds of complaints from Columbus, Westerville and Blendon Township residents.

One thing that gets lost in the shorthand: the permit up for renewal covers the asphalt plant only, and the asphalt plant is one tenant of a much larger industrial site. Citizen Pollution Watch describes 109 acres at the juncture of 270 and Westerville Road in three sections. The north end, in Columbus, holds the Scioto Materials asphalt plant, a recycled asphalt pavement crushing plant, Anderson Concrete and one section of a Kurtz Bros. Class IV yard waste facility. The middle, in Blendon Township, holds a Metro Materials reclaimed concrete crushing plant the group puts at 3 million tons a year on about 23 acres, portable pugmills, and a second Kurtz Bros. section. The south end, also Blendon Township, holds Top Cat Concrete at 500,000 tons a year on about 10 acres and a third Kurtz Bros. section. Most of it started in the mid to late 90s and early 2000s.

That geography is why Westerville's council has no vote here. The asphalt plant sits on Columbus parcels. The people who smell it mostly have Westerville and Blendon Township addresses. Ohio EPA is the only body with a decision to make.

What Did Homes Near the Plant Sell For in 2026?

Every closed resale in the Columbus REALTORS MLS, January 1 through September 21, 2026, measured by straight-line distance from the Scioto Materials parcel centroid. New construction excluded. Speed is MLS entry date to contract date, computed from those two date fields.

Distance from the plant	Closings	Median price	Price per sq ft	Days to contract	Over original ask	Median year built	Median sq ft
Within 1 mile	120	$307,750	$204	16	35.0%	1973	1,388
Within 1.5 miles	233	$312,000	$211	13	39.9%	1972	1,409
Within 2 miles	415	$325,000	$211	13	38.3%	1974	1,479
1.5 to 3 miles	640	$340,000	$211	14	36.6%	1976	1,640
3 to 5 miles	1,187	$370,000	$225	16	37.2%	1989	1,588
Westerville mailing, all	971	$435,000	$227	14	37.8%	1993	1,890
Westerville, beyond 3 miles	523	$475,000	$232	16	35.4%	2002	2,050

Read it top to bottom and it looks like a smell discount. Every ring out is worth more, and Westerville beyond three miles sells for $163,000 more than the mile-and-a-half ring. Every one of those steps is also a step from 1972 houses to 2002 houses and from 1,409 square feet to 2,050. That is the mix problem, and it is the mistake I hear at open houses every week: comparing a Huber Ridge split-level to a Highland Lakes two-story and calling the difference the neighborhood.

Why Does That Table Overstate the Gap?

Two reasons, and the first one is the bigger one.

The near ring is a condominium strip. Of the 120 sales inside one mile, 32 are condominiums, 26.7 percent. Inside a mile and a half it is 50 of 233, 21.5 percent. Out at a mile and a half to three miles it drops to 14.5 percent, and across the whole 2026 Columbus MLS it is 12.7 percent, 2,732 of 21,596 resales. The six closest closings to the plant are all condominiums, on Harbour Pointe, Heron Pointe and Pelican Pointe, between 0.22 and 0.27 miles out, from $188,000 to $215,000.

So the number people quote for the streets by the plant is partly a number about condominiums. Pull them out and the ring changes:

Single family resales only	Closings	Median price	Price per sq ft	Days to contract	Over original ask	Median year built	Median sq ft
Within 1 mile	88	$328,500	$216	14	44.3%	1971	1,512
Within 1.5 miles	183	$330,000	$221	11	46.4%	1970	1,512
Within 2 miles	334	$342,625	$218	11	43.4%	1972	1,566
1.5 to 3 miles	538	$360,000	$217	12	40.1%	1976	1,732
3 to 5 miles	839	$409,900	$230	14	42.9%	1983	1,706
Westerville mailing, all	733	$475,000	$231	13	41.7%	1988	2,078

The $312,000 becomes $330,000 the moment you stop counting condominiums as houses.

The second reason is size. A Westerville single family resale ran 2,078 square feet at a 1988 build. Inside a mile and a half it is 1,512 square feet at 1970. On price per square foot, which strips most of that out, the gap between the near ring and all of Westerville is $221 against $231. Ten dollars a foot. 4.3 percent.

And the condominiums are worth one more line, because the obvious story about them is also wrong. Condominiums inside one mile closed at a median $189,000 and $171 a square foot. Condominiums from one to three miles out closed at $224,900 and $170 a square foot. Same price per foot to the dollar, give or take. The strip closest to the plant is cheaper per unit because it is older and smaller, 1984 and 1,152 square feet against 1979 and 1,269, not because of where it sits.

Does the Plant Lower Prices Once You Compare the Same House?

So I held the house constant. Single family only, built 1960 to 1985, 1,200 to 2,400 square feet, which is the actual housing stock around that interchange.

Same house, by ring (SF, 1960 to 1985, 1,200 to 2,400 sq ft)	Closings	Median price	Price per sq ft	Days to contract	Over original ask
Within 1 mile	73	$330,000	$214	13	45.2%
Within 1.5 miles	137	$330,000	$216	13	47.4%
1.5 to 3 miles	276	$339,250	$202	11	41.7%
3 to 6 miles, same ZIP codes	185	$350,000	$227	14	49.2%

Three things come out of that.

The ring inside a mile and a half and the ring just outside it are the same market on price, $330,000 against $339,250, and the closer ring is $14 a square foot higher. Whatever the plant does to a Tuesday afternoon, buyers in 2026 paid the same for a 1970s house at Dempsey and Paris as they did for one out toward Sunbury Road.

The widest gap is $20,000 against the same kind of house three to six miles out in the same ZIP codes, 6.1 percent. Real money on a $330,000 house. Also inside what location alone does in this part of Franklin County with no smokestack anywhere near it.

And the homes closest in went over the original asking price 47.4 percent of the time, in 13 days. Whatever the complaints say, buyers are not walking at the curb. They are bidding. I also pulled the Westerville-mailing same-age line and it came back at 24 sales, which is too thin to publish a median on, so it is not in the table.

Can You Measure the Downwind Side at All?

This is the test I most wanted to run, and it does not work. Odor follows wind. If the plant were pricing anything, the houses downwind of it should carry the damage and the houses upwind should not, at the same distance.

So I split the single family sales inside a mile and a half by compass bearing from the plant parcels, east and northeast on one side, west and southwest on the other, and the split came back useless. All 118 sales east and northeast of the plant sit in ZIP 43081 with a Westerville mailing address. Thirty-six of the 37 sales west and southwest are Columbus addresses in 43229 and 43231. The bearing is the city line.

Which means any price difference between those two sides is the mailing address and the school district, not the air. For the record the two sides came back at $332,188 and $226 a foot downwind against $327,500 and $203 upwind, and I am not publishing that as a wind finding, because it is a Westerville-address versus Westerville-schools finding wearing a wind costume. Twenty-eight of the 183 sales fall in the crosswind sectors and are out of the split entirely.

This plant sits on a jurisdictional boundary that makes the downwind question unmeasurable from sale price in a single year. Somebody with address-level odor complaint data and five years of repeat sales could do it. I cannot do it with closings, and I would rather say so than hand you a number that is really a school district.

What Is for Sale Near the Interchange Right Now?

Active resale listings	Listings	Median list price	Single family share
Within 1 mile	37	$230,000	51%
Within 1.5 miles	82	$258,400	67%
Within 3 miles	259	$285,000	70%

Same pattern as the closings. The nearer you get, the more of the inventory is condominiums, which is what pulls the near-ring list prices down. Inside one mile, half of what is for sale is not a house.

What Should You Do If You Own or Are Buying Near the Interchange?

If you own inside a mile and a half, the permit renewal is not a reason to sell and it is not a reason to hold out for a number the street has not produced. Your comps are $330,000 for a same-age single family house and they are going under contract in under two weeks. If the hearing puts new conditions on the permit, hours, production limits, monitoring, the streets off Dempsey and Paris are first to benefit, and that shows up in 2027 closings, not this fall's.

If you are buying, do the thing the data cannot do for you. Stand in the yard on a warm afternoon with the wind out of the west, and go back a second time. The complaints are documented and Ohio EPA has logged 50 of them since May 2024. You are not getting a discount for living with it, which is what the tables say, so the only question is whether you can. Ask for the EPA complaint history on the address before you write.

And if you want the permit to come back different, the 21st is the day. After that the file closes and we all find out in a few months.

Send me an address anywhere inside three miles of that interchange and I will send back every 2026 closing on that street, its straight-line distance to the plant parcels, and the same-age single family comparison for that block only. Start with a home value estimate if you are thinking about selling, or a home search if you are looking north of 270, and I will run it myself. To talk it through, book a call.

Related reading: the Westerville submarket page, what every Westerville neighborhood sold for in 2026, the Sunbury Road corridor and Blendon Township planning, and how long it takes to sell a Westerville house in 2026.

Adam Geuy, Realtor, Blacktree Realty. 937-239-2919.

Sources

• Hearing date, hearing location, comment deadline, permit number, action description, facility address and comment channels: Ohio EPA public notice, Scioto Materials LLC, permit P0140330, read October 13, 2026. Action date September 17, 2026; action "Renewal FEPTIO for a 400 TPH hot mix asphalt plant"; hearing October 21, 2026 at 6:00 PM, Westerville Community Center, 350 N. Cleveland Ave., Westerville, OH 43082.
• Hearing confirmation and open comment period: Citizen Pollution Watch, read October 13, 2026.
• 600,000 tons a year, resident symptoms, group founded 2015, hundreds of collected complaints: NBC4, "Westerville residents push back against asphalt plant", read October 13, 2026.
• 21 comments in the first 28 days, 50 Ohio EPA complaints since May 2024, inspection and emissions statement, company statement: ABC6, July 28, 2026, updated July 29, 2026, read October 13, 2026.
• The 109-acre site, its three sections, the tenants and their stated tonnages: Citizen Pollution Watch, "About the Industrial Site", read October 13, 2026.
• Plant parcel geometry used for every distance: Franklin County Auditor parcel layer, Scioto Materials LLC parcels 600-277648, 600-277649 and 010-231138, pulled September 14, 2026 via gis.franklincountyohio.gov. The street address on those parcels matches the 6187 Westerville Rd. address in Ohio EPA's October notice.
• All closing counts, medians, price per square foot, days to contract, over-ask shares, condominium shares, bearing split and active listing figures: Columbus REALTORS MLS closed and active residential listings, 21,596 resale closings January 1 through September 21, 2026 across 32 exports, computed by Adam Geuy. New construction excluded. Distances are straight-line from the parcel centroid. Days to contract is MLS entry date to contract date from those date fields, not the MLS days-on-market field.