How to Compare Kailua-Kona Market Sources Without Mixing Them

Start with geography

Zillow and Redfin pages use a Kailua-Kona city geography. Realtor.com’s county file covers all residential listings across Hawaii County. Hawaii REALTORS reports Hawaii Island or Hawaii County totals. None should be silently relabeled as North Kona, the Kohala Coast or a resort.

Then align period and metric

Redfin’s displayed price is a three-month rolling median. Zillow’s downloadable value is a single-month median. Realtor.com’s list-price measures concern asking inventory. Hawaii REALTORS reports closed-sale medians and counts.

Use each source for its strongest question

Use city sale measures for broad local closing context, city inventory for selection context, county listing files for broad supply conditions, and association totals for island-wide closed-sales context. For a property decision, replace every aggregate with matched local evidence.

• Redfin: $704,534 three-month median sale price and 32 August sales.
• Zillow: $994,500 July downloadable city median and 77 August median days to pending.
• Realtor.com: 1,387 county active listings in August.
• Hawaii REALTORS: 1,335 year-to-date island single-family sales through August.