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Thus, the rental externality problem also occurs in tenant-owned housing.<br />

Housing policy, such as security of tenure rights, that are guaranteed by (tenancy) rent<br />

control also affects housing quality. 4 For example, Albon and Stafford (1990), Arnault (1975),<br />

Frankena (1975), Kanemoto (1990), Kiefer (1980), Moorhouse (1972), and Seshimo (2003)<br />

have examined the impact of (tenancy) rent control on the maintenance (or investment) of<br />

rental dwellings. They show that because (tenancy) rent control might reduce the profit of<br />

rental housing businesses, landlords reduce maintenance on their housing. However, Olsen<br />

(1988) has argued that if tenants maintain the quality of their housing, (tenancy) rent control<br />

does not necessarily reduce the quality of landlord-owned housing. This is because rent reduc-<br />

tions are transfers from landlords to tenants. However, in rental-housing contracts, tenants<br />

are not residual claimants of housing units. Therefore, tenants do not consider a landlord’s<br />

benefit from alternative use of the dwelling. For this reason, the tenant maintenance rate<br />

may be less than the landlord maintenance rate. 5 In rental-land contracts, Kanemoto (1990)<br />

has shown that tenure security promotes optimal investment because it incorporates perfect<br />

property rights. 6 However, Seshimo (2003) has argued that over-investment is generated by<br />

tenure security. This is because tenants undervalue the benefits from land-use conversion<br />

relative continuation of the contract.<br />

However, these analyses have all examined the decisions of owners and users in isolation.<br />

In fact, both decisions affect housing quality, as Miceli (1992) has argued. Seshimo (2003)<br />

considered the effects of both on investment for rental-housing contracts only. 7 In this pa-<br />

4 Under tenancy rent control in Japan, it is almost impossible for landlords to refuse renewal of a rental<br />

contract that has expired if the current tenant wants to continue it. Thus, landlords cannot put their housing<br />

to an alternative use even if it is profitable to do so. Furthermore, to prevent eviction because of rent increases,<br />

judicial precedents from tenancy suits have established that the contract-renewal rent, which is the rent for<br />

an incumbent tenant, is not permitted to exceed the rent of comparable newly rented units. Several countries<br />

have similar controls, including Canada, France, Germany, India, Italy, Sweden, Switzerland, as do some parts<br />

of the U.S.<br />

5 Iwata (2001) has shown that if tenant maintenance and landlord maintenance are perfect substitutes,<br />

and the tenant’s maintenance cost function is the same as that of the landlord, tenancy rent control reduces<br />

maintenance.<br />

6 Perfect property rights imply that subleasing is allowed.<br />

7 In this model, a landlord’s investment and that of a tenant occur sequentially. First, the landlord undertakes<br />

the building investment on the land, and the tenant subsequently makes a relation-specific investment<br />

in the rental dwelling. Seshimo showed that if tenant protection is perfect, the tenant over-invests in the<br />

rental dwelling to increase compensation for having to involuntarily vacate the dwelling. This reduces the<br />

opportunity to convert the use of the land. The landlord expects this to occur and consequently decreases<br />

investment in the building. The opposite results arise when tenure security is not protected.<br />

3

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