Most traditional property tax appeal firms operate on a commission model: they take 25 to 35 percent of your first-year tax savings, collected only if they win. On the surface, this sounds like a risk-free arrangement. In practice, it creates an incentive structure that works against typical homeowners.
The commission math problem
The examples below use a 10% over-assessment and a 1% levy rate as illustrative assumptions:
- A commercial property assessed at $5 million might generate $5,000 in annual tax savings if successfully appealed. At a 25% commission, that is $1,250 for one case — high margin, worth deep effort.
- A residential home assessed at $500,000 might generate $500 in annual tax savings. At a 25% commission, that is $125.
The implication is straightforward: firms that handle both commercial and residential work have a strong financial incentive to allocate their best analysts and most preparation time to commercial cases.
The shared deadline forces a choice
In a given area, commercial and residential properties share the exact same appeal deadline. A firm handling both case types can't spread the work out over time by handling one type first and the other later — every client's case is due in the same short window, commercial and residential alike. When the deadline is bearing down and something has to give, the commission math above decides which cases get the real effort and which get deprioritized — and residential is consistently the one deprioritized.
What deprioritization looks like in practice
- Residential cases are assigned to junior staff while senior analysts focus on commercial portfolios
- Comps get less scrutiny for quality — producing a weaker case in front of the King County Board of Equalization
- Hearing preparation is minimal — the case is filed but not deeply built
None of this is malicious. It is the predictable result of a business model where different case types generate vastly different revenue. A firm optimized for commercial work is structurally misaligned with what a King County homeowner needs.
How a flat fee changes the incentive
A flat fee removes the commission disparity entirely. When the fee is the same regardless of whether the property is a $400,000 townhouse or a $900,000 single-family home, every case gets the same preparation. There is no financial reason to rush a smaller case.
Appealo charges a flat $79 — only if your assessed value is reduced. We work exclusively with King County single-family homes and townhouses. Every case gets the same depth of comparable analysis and the same hearing representation.