The transition path — what happens to prices, wealth, and mortgages

2026-07-18 · wave 10 · the reflexivity model (Definition-of-done item; feeds academic-path Q4 and the transition-instrument decision queued for Floyd).

Basis note (w18): wealth-conversion figures below use the gross-stock claim (≈$190k/person). On the w17 net basis the capitalized claim is ≈$164k/person (family of four ≈$655k); conclusions unchanged. Canonical: NUMBERS.md.

Setup

Rent-basis settlement (adopted w4): each year a share s of assessed land rental value R settles through the schedule. Land's private price is the present value of the rent the holder keeps: P = (1−s)·R / i. Discount i = 5.5% (matching the cap rate used throughout). "Land price → low" is therefore not a malfunction to model around; it is the mechanism. What needs modeling is the path and who bears it.

Announcement-day land prices under each instrument

Computed exactly (PV of the declining retained-rent stream at i = 5.5%):

Instrument Land price on announcement, as % of today
Immediate full settlement (s = 1) ≈ 0%
Linear phase-in, 10 years 20%
Linear phase-in, 20 years 37%
Linear phase-in, 30 years 49%
Grandfather-until-sale Buyer-side ≈ 0% immediately; incumbents keep flows until sale

Property-level translation (price of house = structures + land; only land falls):

Property Land share Property price change, 20-yr phase-in
Vancouver single-family (measured, w9) 85% ≈ −53%
Canada-average residential (NBSA/DHEA join) 53% ≈ −33%
Low-land-share markets (Atlantic, Prairies) ~35% ≈ −22%

These are the honest numbers. No presentation should soften them; the defense is the next section, not a smaller font.

The wealth-conversion identity (the answer to "trillions destroyed")

The settlement does not destroy the wealth; it converts its form. Each citizen's allowance is itself an asset — a perpetuity claim on s·R̄, capitalized at ≈ $190,000 per person at full settlement (≈$758k for a family of four). In aggregate, the claims created equal the rent redirected: title wealth becomes citizen-claim wealth, plus the transfer of entity-held land value ($1.45T corporate + government) from shareholders to citizens at large.

Net household wealth change ≈ (household allowance capitalized) − (land-price loss on holdings):

Household Land held Wealth effect at full settlement
Renter family of four $0 ≈ +$758k
Average owner household (2.41 persons, $271k land) $271k ≈ +$187k
Crossover household ≈$456k ≈ 0
Median Vancouver detached (avg size) ≈$1.45M ≈ −$0.99M

The scheme's balance-sheet story in one line: most households get wealthier the day it's announced — because the claim they gain exceeds the land value they lose. The loud cases are real and concentrated exactly where wave 9 measured them.

The binding constraint: the mortgage channel

Residential mortgages outstanding: $2.411T (NBSA households, Q1 2026) against household real estate of $8.86T (aggregate LTV ≈ 27%) and household land of $4.67T. Under a 20-year phase-in the average property falls ≈ 33% → aggregate LTV rises to ≈ 41% — the system survives easily. The problem is the tail: recent buyers at 80%+ LTV in high-land-share metros go deeply underwater (a Vancouver detached bought last year at 20% down is negative equity many times over). Two facts make this the true design constraint:

  1. Recent full-price buyers are the most morally sympathetic losers — they paid the old capitalized value in cash and savings; and
  2. Mortgage collateral is written against titles, not citizen claims — the allowance asset can't be pledged to the bank (yet).

Instrument assessment

Decision for Floyd (now fully priced): adopt the composite, or trade its complexity against a plain 20-year phase-in. Numbers above; moral case unchanged by either.

What this hands the academic lane

Q4's skeleton is now explicit: the PV model above, calibrated against event studies (Denmark's 2021 housing-tax reform for capitalization speed; Prop 13 literature for lock-in; Pennsylvania split-rate adoptions for small-dose evidence). The one genuinely open modeling question: how much of today's price is already speculative premium above PV-of-rent (if prices exceed R/i today, part of the "loss" was air), which is measurable from rent-yield spreads — added to Q4.

Sources

  1. Statistics Canada, Table 36-10-0580-01: household residential mortgages $2.411T, household land $4.669T, real estate ≈$8.86T context (Q1 2026).
  2. Wasi, N. & M. J. White (2005), "Property Tax Limitations and Mobility: The Lock-in Effect of California's Proposition 13," NBER Working Paper 11108. https://www.nber.org/papers/w11108
  3. Vancouver land shares: analysis/vancouver-land-share.md (this repo).
  4. Allowance capitalization and incidence: analysis/household-incidence.md.
  5. PV computations: linear phase-in schedules discounted at 5.5%, computed this wave (script in wave log commit).

Groundshare — a proposal in open development. Every number traces to a cited public source with its retrieval date; corrections are published, not erased. Rebuilt 2026-07-19 from the repo's research files.