Seattle · Home sale
4102 100th Ave SE in Mercer Island sells for $6.35 million
A single-family home at 4102 100th Ave SE, Mercer Island sold for $6,350,000 on September 29, 2026. See the seller and buyer net sheets for this sale.
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- Sale price
- $6,350,000
- Sold
- September 29, 2026
- Property type
- Single-family home
- Lot size
- 22,000 sq ft
The single-family home at 4102 100th Ave SE in Mercer Island sold for $6,350,000 on September 29, 2026. The King County Department of Assessments' sales records show the sale.
An aerial photo shows the parcel directly on a lake, with a dock. The photo also shows other houses around it.
The Assessor's records show a 0.51-acre lot and a market value of $6,692,000. Listing data shows 5 bedrooms and 5 bathrooms.
This summary was written by AI from public sales records and checked by automated rules. The figures come from the record and the NetSheet.org rules engine. How we make these.
What were the closing costs in King County?
By our estimate, the seller's two largest charges, not counting commission and prorations, were $159,575 for the state real estate excise tax (graduated) and $31,750 for the local real estate excise tax (0.50%). Who pays what follows King County custom.
How much did the seller net?
By our estimate, the seller netted about $5,812,772. That assumes a 5% commission. It is before any mortgage payoff.
How much cash did the buyer bring to closing?
A buyer putting 20% down would need about $1,357,798 at closing. That covers the down payment and closing costs.
Run this net sheet with your numbers (free) See photos on Zillow
Source: King County Department of Assessments, real property sales, document 3397293. Property details: King County Assessor. Net sheets are estimates from the NetSheet.org rules engine, not the parties' actual closing statements. Request a correction or removal.
