Comments welcome on an investment idea for our SFH

Hi All

Looking for some advice and guidance regarding an investment decision we have regarding our house.

We currently have a 2 Bed SFH in Noe Valley that’s ~1800 sq ft, 2 bed and main bathroom upstairs and open plan living, dining and kitchen downstairs with half bath. We also have 2 car garage but cars would have to be parked one behind the other. As mentioned in other threads we also have a separate ‘cottage’ in the backyard that is ~275 sq ft that has one space and a full bath, the cottage has never been a separate dwelling and is detached from the main house by 3 foot walkway.

Here is the interesting idea, for around $200k we believe we can do a small digout of half of the garage (foundation already done in the 90s) and connect the cottage to the main house. This would give us the following extra space

  • 1 downstairs living area and full bathroom (300 sq ft total)
  • New mudroom, connecting the new room in the garage area with the cottage. It would also have 2 exterior doors to the backyard and side entrance to the house
  • 275 sq ft - cottage bedroom integrated into the main house space with full bath

Now due to the type of remodel we would have to do, it would probably take 6-12 months to get through planning etc.

So overall it would add around 700 sq ft but would create a layout that is not ‘standard’, with the third bedroom suite downstairs accesses through a living and then mudroom.

We are seeing the finances as follows

  • Remodel costs ~$200k
  • Loss of separate cottage and 1 garage parking space - $90k (taken from appraisal)
  • Additional 700 sq ft - Average selling price in the area is just over $1140/sq ft but assume we would get slightly less ($1000/sq ft) as the layout would be non-standard, so $700k return

Wondering what people think of this idea, it seems to be a no brainer to me. Put in $200k and return $610k, this means that even if the figures are off there is still a profit to be made.

Welcome any views on this from someone who has done major remodels in SF.

Thanks

A couple questions:

  • is the addition 700sqft or is it 700sqft-275sqft of the existing cottage?
  • can the new layout be turned into a separate in-law suite?
  • rather then pricing it by $/sqft, what is the comp of similar sized house before and after addition? is it really 2M vs 2.7M?
  • can you provide a quick sketch of the addition so we can see how “non-standard” it would be and we can see whether it would be an issue (some bad layouts can have a huge impact on the price)
  • is the addition 700sqft or is it 700sqft-275sqft of the existing cottage? - 700 sqft includes the existing cottage

  • can the new layout be turned into a separate in-law suite? - Possibly yes but we are staying away from that idea to prevent bringing the whole property under rent control

  • rather then pricing it by $/sqft, what is the comp of similar sized house before and after addition? is it really 2M vs 2.7M? - From what I can tell the ‘perfect’ SFH of similar size with three upstairs bedrooms can fetch $3m, $2.7 does not see unreasonable

  • can you provide a quick sketch of the addition so we can see how “non-standard” it would be and we can see whether it would be an issue (some bad layouts can have a huge impact on the price) - Attached a ‘rough’ sketch

The layout does not look too bad. What is the purpose of the other full bath by the stairs? I personally feel that if you were to make it an in-law suite with a mini kitchen you may get more when at resale. Do you really need to disclose that you are renting out a unit within your house?

Rules and regulations regarding illegal in-law units appear to be getting stronger and stronger every year. We just had a friend who was not allowed to reverse an illegal in-Law unit as while it met the letter of the law it did not meet the ‘spirit’!

Full bath is not essential but would fit well in the space

When you are submitting for approval, do you need to tell them that it is an on law unit?

Anyways, with construction costs at $300/sqft and homes selling > $1000/sqft, it seems to always makes sense to add square footage as long as works with the existing space.

There are some very distinct rules regarding the city not allowing you to create what could easily become an illegal ADU.