Is there some sort of database that summarizes each city's appreciation by neighborhood?

Nothing to add except that Williams summarized it perfectly. 

This also would not count as the IRS views these as investor hours which do not count towards the REPS status.3) The Tax Court summarized this nicely...way back in 1996!

To summarize, it depends on the transacton and the people involved.

Quote from @Matthew Becker: Toby Mathis on YouTube summarizes and teaches it very well.   

Here’s what you could do: Send a Formal Demand Letter: Draft a concise email or certified letter summarizing the agreement (scope, budget, their role with the lender), how they’ve dropped the ball, and the damages you’re facing (e.g., loan costs, delays).

This requires union tribune subscription, but many San Diegans have that subscription  https://www.sandiegouniontribune.com/2024/12/16/home-flippin...To summarize, average purchase price was $760k, average sale $915k.  

Presumably the multiple member LLC was treated as a partnership...Based on that assumption, the instructions for the 1065 partnership return nicely summarize the rules:"Except as provided below, every domestic partnership must file Form 1065, unless it neither receives income nor incurs any expenditures treated as deductions or credits for federal income tax purposes.Entities formed as LLCs that are classified as partnerships for federal income tax purposes have the same filing requirements as domestic partnerships."

AI is becoming a game-changer in real estate, and one of the coolest ways we use it at DealMachine is to analyze property images to detect signs of distress—straight from Google Street View.Instead of relying on manually spotting potential deals, our AI can scan publicly available images and flag properties with indicators like:✅ Overgrown grass✅ Boarded-up windows✅ Roof damage✅ Neglected exteriorYou make the list and you tell AI to look at the images in your list.This makes finding distressed properties way faster and more automated, helping investors focus their efforts on leads with the highest potential.AI also summarized your conversations with sellers in the DealMachine dialer, takes notes, and tells you what to say during the conversation.Hope this helps!

You can also test for formaldehyde, Volatile Organic Compounds (VoCs), arsenic in the water, DFAS, gas stove fumes, microplastics, fecal contamination, and so on and so on.It is worth summarizing it this way.