Condition shows up, just indirectly. A note buyer prices two things, the borrower's likelihood of paying and the property's ability to cover the debt if the borrower stops. Your roof and panel go into the second one.
Mechanically it works through value. When someone considers buying a seasoned note they usually order their own valuation, often a drive-by appraisal or a desktop report, sometimes a full interior appraisal on larger balances. That value becomes the denominator in their investment to value calculation, which is the price they'd pay divided by the property value. Solid mechanicals support the number an appraiser lands on and they reduce the odds of a repair that pushes a marginal borrower into missing a payment. Deferred maintenance does the reverse, and a valuation that comes in under your sale price tightens the buyer's ITV and lowers what they'll offer.
One term to keep straight, since the room uses both. Loan to value describes the note balance against value at the moment you create the loan. Investment to value describes what a note buyer paid against value. Some people use LTV loosely for both, and the numbers are different because the buyer paid less than the balance.
The piece that connects directly to your renovation habit: the sale price on an owner-financed deal often sits above what a bank appraisal would support, because the buyer is paying for access to financing rather than for the cheapest house. That gap is invisible at closing and very visible when a note buyer valuates the collateral. Documented capital improvements are one of the few things that narrow it in your favor, so keep the receipts and the permits with the loan file rather than in a folder somewhere.
