Free lead-test kits and local lead data for Dayton and Montgomery County, Ohio. Built for the Lead and Healthy Homes program and the Lead Safe Dayton Coalition.
Find the lead in your Dayton home before it finds your kid.
A free Fluoro-Spec lead-test kit, made to put in families' hands. Spray a surface, shine the light, and lead paint glows bright green in seconds. Below that is a map of Montgomery County houses by the year they were built, from the county auditor's records.
46,972Dayton homes with a recorded build year in the county auditor's records
92%of them were built before the 1978 lead-paint ban
68%were built before 1950, when paint carried the most lead
77%of the 185,182 dated homes countywide predate 1978 (28% predate 1950)
Source: Montgomery County Auditor, TaxParcel2025_public hosted layer, residential parcels (class R) with a residential year built, queried September 24, 2026. These are parcel records with a dwelling year, one per parcel.
Houses by the year they were built
Start on the county. Scroll or pinch to zoom, or tap a neighborhood below. Once you are in close, the map pulls the actual parcels for that spot live from the county auditor's server and colors each house by the year it was built. Hover or tap a house for the address, year and style.
built before 19501950 to 19771978 and later
loading houses…
Houses load straight from the Montgomery County Auditor's public parcel service (services8.arcgis.com, TaxParcel2025_public), so the map is as current as the auditor's last refresh. Only residential parcels with a recorded year are drawn.
Where the oldest housing is.
Two reads on the same county. On the left, the DetectLead risk score for the Dayton ZIPs, which blends housing age with the share of families in poverty. On the right, the plain share of houses built before 1950 in each ZIP, straight from the auditor's records.
| Municipality or township | Houses with a build year | Built before 1978 | % pre-1978 | % pre-1950 |
|---|---|---|---|---|
| Dayton | 46,972 | 43,092 | 92% | 68% |
| Kettering | 19,712 | 18,303 | 93% | 19% |
| Huber Heights | 14,129 | 9,607 | 68% | 1% |
| Trotwood | 8,232 | 7,426 | 90% | 12% |
| Harrison Township | 7,626 | 7,307 | 96% | 37% |
| Riverside | 7,134 | 6,735 | 94% | 14% |
| Washington Township | 13,172 | 5,187 | 39% | 1% |
| Miami Township | 8,951 | 5,136 | 57% | 4% |
| Centerville | 8,616 | 4,867 | 56% | 2% |
| Miamisburg | 6,925 | 3,948 | 57% | 20% |
| West Carrollton | 4,063 | 3,576 | 88% | 12% |
| Clayton | 4,911 | 3,341 | 68% | 12% |
| Oakwood | 3,491 | 3,299 | 95% | 79% |
| Vandalia | 4,955 | 3,266 | 66% | 4% |
| Englewood | 4,767 | 2,840 | 60% | 5% |
| Jefferson Township | 2,549 | 2,229 | 87% | 34% |
| Butler Township | 3,197 | 2,049 | 64% | 14% |
| Moraine | 2,314 | 1,523 | 66% | 29% |
| Germantown | 2,096 | 1,496 | 71% | 27% |
| Union | 2,744 | 1,464 | 53% | 3% |
| Brookville | 2,113 | 1,287 | 61% | 24% |
| New Lebanon | 1,361 | 1,177 | 86% | 21% |
| Perry Township | 1,112 | 835 | 75% | 29% |
| Clay Township | 1,165 | 807 | 69% | 29% |
| German Township | 969 | 602 | 62% | 25% |
| Jackson Township | 750 | 534 | 71% | 24% |
Taxing districts with 500 or more dated residential parcels, sorted by the number built before 1978.
Check any ZIP
Type a ZIP and get its score, the share of housing from the lead-paint era, and the median build year.
Four pieces. Anyone can use it.
The test spray
Spray it on paint, dust, a dish, a toy, a windowsill. About 500 tests per bottle.
The extender ring
Slides in under the cap and cuts the liquid per spray, taking a bottle from about 170 tests to around 500.
The rechargeable UV light
Shine it on the sprayed spot in low light and watch for green.
The reference card
Shows you the exact green a positive glows. If your spot matches, that is lead.
1
Spray the surface
Paint, settled dust, a windowsill, a plate, a painted toy. The liquid is a clear, thin alcohol.
2
Shine the UV light
In low light, point the light at the sprayed spot while it is still wet.
3
Read the glow
Green glow means lead. White ceramic and clean surfaces stay dark.
A glow, or the absence of one, is a fast field read and not a lab result. It finds the likely lead first, so limited inspector and lab time goes where it is needed, and it is handy for re-checking a surface after interim control work. How it compares to the RRP cleaning card.
Handouts to print, post, and hand out.
One-page lead-safety guides, ready to print or drop into your own outreach. Free to use.
Free kits, the map, and help for the coalition.
For the City of Dayton Lead and Healthy Homes program and the Lead Safe Dayton Coalition: kits your inspectors and outreach staff can put directly in families' hands, printable handouts, and this map. I can cut an address list of every pre-1950 house in any ZIP or neighborhood from the same records, match it against the WIC clinics and prenatal providers serving Medicaid families, and walk the coalition working group through it on a call. No charge for any of that.
Fluoro-Spec, Eric Ritter
Free kits, handouts and data for lead programs
Fluoro-Spec is a fast field screen that makes lead visible. It is not an EPA-recognized test kit and does not replace XRF or lab dust-wipe clearance where those are legally required. The active ingredient is manufactured under an EPA-authorized Low Volume Exemption under TSCA Section 5 (40 CFR 723.50). · detectlead.com
Are you with public health? Click here for our portal to explore the ways Fluoro-Spec can help prevent lead poisoning and reduce costs and headaches in your current programs.
Part of the DetectLead lead-risk network. Every program page and the national lead-risk map →