Land use optimization question

[Mike Ross]

Id like to understand what the most profitable way to fix up a current 1,700 SFR in a 6,200 sq. foot lot would be? The lot goes from street to street. Plan would be to sell.

1. Keep existing building ($850K appraisal) and build an DADU 

2. Keep existing and add an additional -~2000 sq feet 

3. Demolish existing and add a primary, DADU, ADU or even possibly a four plex.