A payment standard letter can put a voucher rental model eleven percent off

Here is a modeling mistake worth studying. Picture a passive investor in a small portfolio of scattered single family rentals, mostly three bedroom, mostly voucher tenants, run by an experienced operator. The investor gets the reporting and builds an independent model on top of it, because nobody's assumptions deserve blind trust. The model has rents growing at a market rate. That is the mistake. Voucher rents do not grow at a market rate. They grow when the payment standard for that bedroom size in that authority moves, and then only up to what the unit can actually get approved for after a rent reasonableness comparison. So the standard comes out and moves more than penciled. Say eleven percent on the three bedroom figure. That looks like good news, except the operator only captures part of it on most of the units, because on the older houses the rent reasonableness comparison holds them close to where they already were. On the two better-condition houses he gets most of it. On one he gets nothing. Ask an operator like that how he decides which ones to push and the answer is usually that he pushes the ones where he has put money in, because he can point at the money. The kitchen he redid, the new HVAC. That is the argument, and it is an argument made to a person on the phone with a form. The rebuilt model has two lines instead of one. Payment standard, which comes from the authority, and achievable contract rent, which comes from the condition of the specific house. They diverge, and the gap between them is roughly the capital the operator is willing to put in. That is a much more honest model than the single line.