The estimate I have from a cost segregation firm is $316k (w/ study) vs $28k (no study)-Assume we're in the 37% bracket  -Does this mean, I can claim a $117k depreciation deduction for this year? 

Use softwares like AirDNA and Pricelabs to get an estimate of what you could be making and see if it's worth it.

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

Key details of the project are as follows: The lots, vertical utilities, and plans totaled over $400,000 and are owned free and clear, with no debt.

Find the one who writes scary inspection reports and catches every minor detail about a property.

Happy to connect if you have all essential details.

—it’s also about reliability, attention to detail, and someone who just “gets” your space and your guests’ expectations.Do you have any hidden gems, local recommendations, or tips to share?

Many of them might be skilled folks but they are not always the best estimator and business person. 

Refi after construction.These numbers consider only the portion of costs of the HEL attributable to the land purchase, not the payoff of the HELOC (which we took out to buy the Seaside condo).Cash In:                     $66,166 (Cash, 1 year of debt service of HEL, debt service of const. loan, furnishing)Amount Financed:      $548,000 (home equity loan + construction loan + closing costs)Total Cost of build:     $614,166ARV:                               $850,000 (or rather "after construction value")Refi                                $637,500 (75% of value + closing costs)                                        Cash Out                       $89,500New payment             $4500/month (54,000/year)Estimated Cash Flow (pre-tax numbers, so actual mileage may vary)airBNB year 1:            $70,000     (net income $16,000)airBNB year 2:            $100,000   (net income $46,000)airBNB year3+:           $120,000   (net income $66,000)ROI (construction year):    0ROI Year 1 of STR:              24.2% ROI Year 2 of STR:              69.5% ROI Year 3+ of STR:            99.7% Did I calculate these ROI numbers right? 

I reached out to the seller to request details of the repair and asked why this was not mentioned in the seller’s disclosure.