District demographer data: multifamily units produce fewer students than single-family; affordable housing yields higher child generation rates

District staff described the demographic assumptions used to build the budget and explained why new multifamily development in Corvallis has not produced the student enrollment increases some residents expected.

Why it matters: Enrollment drives state revenue for the district; declining enrollment has been central to budget decisions. Community members asked whether recent or planned housing developments would change enrollment assumptions.

Key points: Staff said the district's demographic study reviewed building permits and post-occupancy student yield. The study found approximately one student for every four new single-family homes and roughly one student per five multifamily units. Staff also said income-restricted units tend to produce more students than market-rate multifamily, and offered the example that a recent 64-unit development would be expected to generate roughly 33 students spread across age groups according to the district's yield factors.

Staff cautioned that multifamily development has produced lower-than-expected student counts in prior Corvallis projects, citing the Lincoln area development as an example where new units did not yield expected students. The district said it uses permit data and actual yield studies when forecasting enrollment.

What the committee heard: Members asked whether the district had broken out student-generation rates by income-restricted versus market-rate housing. Staff said they have the data and can provide it. The committee and staff agreed demographic trends are a key part of long-range facilities and budget planning.

Ending: Staff said long-range facility planning incorporates building permit data and demographic study results when planning for future enrollment and staffing needs.