RE5004 Chap.5 Vacancy, Rent and Property Cycles
Vacancy, Rent and Property Cycles
Clear a fixed short-run stock
Construction and conversion lags leave stock nearly fixed in the short run, so rent responds to market imbalance. Equilibrium vacancy is positive because heterogeneous tenants and spaces need search, turnover and matching inventory.
Turn a shock into a cycle
Demand can raise rent and start projects that arrive later in a cluster.
Completion then pushes vacancy above normal and reverses rent growth, especially when credit synchronizes the development pipeline.
Read the vacancy gap before the coefficient
The normal vacancy rate is the benchmark associated with stable rent, not the technically smallest vacancy.
Actual vacancy below normal signals unusually tight matching and upward rent pressure; vacancy above normal indicates excess available space and downward pressure.
The equation uses a lagged observation, so the time index and subtraction order belong in the economic interpretation, not only in the arithmetic.
Keep three clocks visible
A cycle explanation distinguishes the demand change, project starts and later completions. Collapsing them into one date removes the lag that creates overshooting.
Credit can synchronize decisions, while durable stock remains after demand changes. Comparative statics describes the endpoints; the vacancy mechanism explains why rent can rise first, fall after clustered delivery and recover only as demand catches up or stock is removed.
What this chapter covers
- 01
Short-run stock rigidity
- 02
Positive normal vacancy
- 03
Vacancy and rent signs
- 04
Rent-adjustment equation
- 05
Supply lags
- 06
Physical and credit cycles
Worked example · free
Computing rent change
- 2Compute the vacancy gap.
- 1Apply the slope.
- 2Label the market condition.
Key terms
- Normal Vacancy
- The positive vacancy rate consistent with stable rent.
- Excess Demand
- The condition when vacancy lies below normal and rent rises.
- Excess Supply
- The condition when vacancy lies above normal and rent falls.
- Construction Lag
- The delay between a development signal and completed stock.
- Physical Cycle
- Vacancy and rent fluctuation caused by delayed supply response.
Vacancy, Rent and Property Cycles FAQ
Why is zero vacancy not the equilibrium benchmark?
Search, mobility and matching require some space to remain available. The normal rate is the vacancy level associated with stable rent, not the absence of empty units. Tenants need alternatives and landlords experience turnover, so a functioning market carries inventory. The benchmark can differ across property types and places because mobility, search costs and the cost of holding empty space are not universal.
What determines the sign of rent change?
Compare lagged actual vacancy with normal vacancy. Below normal indicates excess demand and positive rent change; above normal indicates excess supply and negative rent change. Write the vacancy gap first and preserve the leading minus sign before multiplying. A magnitude also requires a consistent convention—percentage points or proportions—while the economic direction follows from the sign of the gap.
How do construction lags create overshooting?
Projects start after high rent and price signals but complete later. A synchronized pipeline can add stock after conditions shift, pushing vacancy above normal and reversing rent growth. Finance can amplify the clustering by enabling many starts together and restricting them together.
The sequence should name demand, rent, starts, completions, vacancy and rent again; otherwise the explanation is merely a list of correlated market facts.
Why can current rent fall despite a strong long-run demand forecast?
Projects launched during an earlier shortage may be completing together now, pushing vacancy above its normal rate before forecast demand arrives. The short-run market then carries excess supply and downward rent pressure even though the eventual demand level is high. Separate present stock and vacancy from the future equilibrium, and inspect delivery dates rather than treating the forecast as current occupancy.
Assessment move
Place every vacancy observation above or below a drawn normal-rate line, then label the imbalance and rent sign. For cycles, write demand change, starts, completions, vacancy and rent on a timeline. In numerical work, copy the equation, calculate the vacancy gap and state the unit convention before applying the coefficient.
Run a symmetry check using equal gaps on opposite sides of normal; the linear classroom equation should reverse the sign. Translate the result into excess demand or excess supply rather than stopping at a number. For explanation questions, keep three dates separate: when demand changed, when projects began and when stock arrived.
Add credit only after the physical lag is clear, and use it to explain synchronization rather than as a substitute for the sequence. Finish with evidence that could test the story, such as pipeline size, completion dates, effective rents, concessions, employment and financing conditions. This makes the cycle claim falsifiable and prevents a strong long-run forecast from being treated as proof that current rent cannot fall.
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