Senate Finance wrestles with ‘missing middle’ definition, flags ADU tax-exemption concerns

The Senate Finance Committee spent its session debating how a pending housing bill should define middle‑income or “missing middle” housing and whether proposed property tax breaks for accessory dwelling units (ADUs) could unintentionally subsidize higher‑value homes.

Committee members said the bill’s current wording uses a different definition of “affordable” than existing programs and worried that the mismatch would confuse policy and allow public infrastructure dollars or property tax breaks to flow to higher‑income or second‑home owners rather than workers the program intends to help.

The exchange focused on four topics: (1) whether to label units “middle‑income,” “moderate‑income” or simply “affordable”; (2) which area median income (AMI) bands to use; (3) how to prevent subsidies from being used for high‑value homes or short‑term rentals; and (4) proposed ADU property tax treatment in sections 18–20 of the draft bill.

Committee members said commonly used ranges differ — participants referenced program definitions that treat deeply subsidized affordable housing at low AMI thresholds and use wider bands (for example, 60%–150% AMI) for moderate or middle‑income programs — and expressed concern the bill’s current text would create a new, nonstandard definition. One committee member said Chittenden County’s area median income is $95,000 and that AMI‑based metrics are regional and move with market conditions; members discussed using a clear statutory anchor so definitions remain consistent across programs.

On ADUs, several members said the draft’s property tax treatment risks offering permanent or long‑term tax advantages to owners of higher‑value properties. Committee discussion indicated the current draft would suppress reappraisal of improvements for a limited period (three years was mentioned during the discussion), which members said could effectively act as a tax break for owners of larger or higher‑value homes if no income or use conditions apply.

Members repeatedly flagged two implementation risks: that public financing of infrastructure (water, sewer, streets) could subsidize higher‑end units in the same projects, and that ADU tax exemptions without use‑or‑income limits could convert owner‑occupied granny units into short‑term rentals or high‑value long‑term rental investments.

Instead of finalizing language, members directed staff to tighten and align definitions across the bill and to prepare draft amendments. The committee agreed to invite the Vermont Housing Finance Agency (VHFA) or the HFA, Champlain Housing Trust, home builders and fiscal drafters to the next meeting to provide data and drafting assistance. Committee members mentioned specific items to bring: AMI charts, home‑price and mortgage affordability relationships, examples of “missing middle” projects, and fiscal estimates of the ADU provisions’ cost (one member said an estimate of roughly a half‑million dollars to the general fund had been discussed in prior testimony).

The chair and other senators said they prefer starting with a standard statutory definition for “affordable housing” where possible and creating a separate, explicitly defined term for middle‑income or missing‑middle homeownership and rental programs so the bill does not unintentionally alter longstanding program eligibility rules. The committee asked for at least two drafters to attend the next meeting to prepare an amendment the group can consider on short notice.

Less central agenda items were scheduled for future sessions: a walkthrough of H.206, a House bill; a hearing on S.1 relating to regulation of virtual currency kiosk operators; and a presentation on UCC code adoption. Committee members also noted pending discussions of yield and school‑funding proposals and a possible item on military pension tax treatment that could appear in the budget process.

The committee closed by setting a goal of having drafting language ready for the following week, scheduling stakeholder testimony for Tuesday, and preparing an amendment for floor consideration if needed later in the week.