(1) 5-4-019:042
Oʻahu · City & County of Honolulu · 4,792 sq ft (0.11 ac)
One parcel, five coordinates — that is the whole Tax Map Key system. How TMKs work →
The public record, at a glance
- Tax map key
- (1) 5-4-019:042 digits-only: 154019042 · URL form: 1-5-4-019-042
- Island / county
- Oʻahu — City & County of Honolulu
- Mapped area
- 4,792 sq ft (0.11 ac)County GIS parcel fabric — the recorded deed controls.
- Parcel centroid
- 21.61874, -157.91765Approximate center of the mapped parcel polygon.
- Assessed value
- $767,900 total · land $600,000 · building $167,900County-certified assessment (Jan-1 valuation date) — an assessment figure, not a market price.
- County record
- Honolulu Real Property Assessment (RPAD) →Owner of record, exemptions, tax history — search the TMK 154019042.
- State parcel map
- Hawaiʻi Statewide GIS parcel viewer →
What a KILO read answers here
The directory entry above is the public record's surface. A KILO read is the layer underneath — the parcel-level answers a project actually turns on:
- Zoning & entitlement — county zoning, state land-use district, and whether the intended use is by-right or discretionary.
- Flood — FEMA flood zone and base-flood elevation posture — including the June 2026 Oʻahu FIRM update.
- Wastewater — cesspool / septic / sewer status and the HAR §11-62 and Act 125 rules that apply.
- Shoreline & sea level — shoreline setback and the State SLR-XA exposure ladder.
- Contamination — DOH HEER and EPA facility context near the parcel.
- Cultural resources — the parcel's HRS §6E review pathway and documented cultural-resource context, with the reasoning shown.
$299/parcel · Pay-as-you-go · no subscription — or a plan if you underwrite regularly. Sign-in required; each read runs fresh against the live public record.
Plat 1-5-4-019
One of 53 parcels on this plat (map sheet).
Questions people ask
Where is TMK (1) 5-4-019:042?
On Oʻahu, in the City & County of Honolulu tax-map system — zone 5, section 4, plat 019, parcel 042. County GIS places the parcel near 21.61874, -157.91765, with a mapped area of 4,792 sq ft (0.11 ac).
How do I find the owner of TMK (1) 5-4-019:042?
Ownership, exemptions, assessment history, and the tax bill are public records held by the county. Search 154019042 at the Honolulu Real Property Assessment (RPAD) to read the current record.
What can be built on TMK (1) 5-4-019:042?
That depends on the parcel's zoning and state land-use district, flood zone, wastewater rules, shoreline setback, and cultural-resource review pathway — each a public-record question. A KILO read pulls all of them for this parcel, cited, in about a minute.