Will a Tuff Shed hurt an appraisal and kill my BRRR?

[Katie Cool]

Hello,

My brother and I are in escrow on a 3b2b that we plan to househack and BRRR. We are converting an extra room into a fourth bedroom and then renting the three bedrooms separately. My brother plans to live there.

The detached garage in the backyard burnt down a few years ago and the seller was going to rebuild it with her insurance money. The washer and dryer were in the garage. Unfortunately, the city has made this nearly impossible and caused the seller to give up. Instead she has given us two options:

1. She will fill in the broken concrete and build a gate around the back. This leaves the washer and dryer sitting on the open cement.

2. She will buy a Tuff Shed that resembles the planned garages as much as possible. This includes keeping the washer and dryer inside. We like this idea and believe it will get approved by the city.

We're buying below market value but worry the Tuff Shed might hurt the appraisal so much that it kills our chance to BRRR.

Do Tuff Shed garages change property value more than a normal detached garage?

Any advice on how to keep a BRRR alive with option 2?

Thanks