Montreux is a gated golf community on the Mount Rose corridor south-west of Reno, built around large custom homes on sloped, wooded ground. The combination of grade change and custom building means lower levels are the norm rather than the exception, and a good proportion of them were never finished.
That shapes what the work actually is here. The expensive unknowns of a typical basement project, whether there is a basement at all, whether the drain can reach where you want a bathroom, whether an egress opening is achievable, are usually already resolved. What remains is finishing, and finishing to a standard that does not look out of place against the floor above.
That standard is the real constraint. In a house where the main level has substantial trim, solid doors and considered lighting, a lower level finished to builder-standard reads as an afterthought. Matching the detailing costs more than a basic finish and is usually the right call, because the mismatch is what people notice.
Practically, this is a gated community with an active association and elevation comparable to Galena, so architectural review applies to anything exterior, access needs arranging, and the envelope needs specifying for foothill conditions rather than valley-floor ones.