When I first started looking at properties in Philadelphia, I would spend hours on a single deal.
I would pull up Zillow. I would look at comparable sales. I would try to estimate renovation costs in my head. I would second-guess myself three times and then either talk myself into a bad deal or walk away from a good one because I was too slow to decide.
I do not do that anymore.
Now I can tell you within five minutes whether a Philadelphia property is worth pursuing or whether I should move on to the next one. Not because I got smarter. Because I built a system.
Here is exactly how I do it.
Step 1 — I look at the asking price and immediately compare it to renovated comps
The first question I ask about any property is not “is this a nice house?” It is “what are renovated homes selling for within a half mile of this address?”
In Philadelphia, this means pulling up Redfin or Zillow and filtering for sold properties — not active listings, sold — in the past 90 days, similar square footage, similar bedroom count, within a tight radius.
That number is my ARV. After Repair Value. What this property could be worth after I fix it up.
If I cannot find at least three comparable sales to support my ARV estimate, I either widen my search or I treat the ARV as uncertain and build in a bigger safety margin.
Step 2 — I apply the 70% rule immediately
Once I have an ARV, I do one calculation:
ARV × 70% minus estimated renovation costs equals my maximum offer price.
If the asking price is above that number, I need to either negotiate down or walk away. There is no in between. The math either works or it does not.
I used to think the 70% rule was too conservative. Then I remembered that I walked away from my first Los Angeles flip with $20,000 on a $170,000 investment after thirteen months. The 70% rule exists for exactly that reason.
Step 3 — I factor in the neighborhood
Not all Philadelphia neighborhoods are equal right now and not all deal types work in every neighborhood.
A property in Fishtown has a different risk profile than the same property in Frankford. A house hack works differently in West Philadelphia than in Northeast Philly. Rental demand in Point Breeze is not the same as rental demand in Hunting Park.
The neighborhood changes the math. An emerging neighborhood might support a more aggressive bid if you believe in the trajectory. A hot market neighborhood might justify tighter margins because the buyer pool is deeper when you go to sell.
I think about this every time.
Step 4 — I look at the deal type
Am I flipping this? Holding it as a rental? Running a BRRRR? House hacking?
The same property can be a good deal for one strategy and a bad deal for another. A house that barely cash flows as a rental might be a great BRRRR if the refinance numbers work. A property in a hot market might make more sense to flip quickly than to hold long term.
Knowing your exit strategy before you analyze a deal changes how you evaluate the numbers.
Step 5 — I get a score
After running through all of that, I have a clear picture of whether this deal is worth pursuing, worth negotiating, or worth passing on entirely.
Strong deal: the numbers work, the neighborhood supports it, the exit strategy is clear. Move quickly.
Possible deal: the numbers are close but need negotiation. Make a lower offer and see what happens.
Pass: the numbers do not work at any realistic price. Move on without emotion.
Philadelphia has enough deal flow that you can afford to be disciplined. The investors who make money here are not the ones who say yes to everything. They are the ones who say no to almost everything and yes to the deals that actually work.
Why Speed Matters
Good Philadelphia deals move fast. When a distressed rowhouse hits the market at the right price in an up and coming neighborhood, you are not the only investor who sees it. Hard money lenders get called. Offers go in same day.
If you need three days to figure out whether the numbers work, you will lose every competitive deal you ever find.
The investors who win in this market do their analysis in minutes, not days. That is not because they are reckless. It is because they have done the work in advance — they know their target neighborhoods, they know their renovation costs, they know their financing — so when a deal appears, the only thing left to do is run the numbers.
The Tool I Use
I built a free Philadelphia Deal Finder specifically for this process.
You enter the asking price, your ARV estimate, your renovation budget, the neighborhood, and your deal type. It runs the 70% rule calculation, scores the deal from 0 to 100, tells you exactly how much you would need to negotiate, and gives you a clear recommendation — pursue, negotiate, or pass.
It is the same analysis I run on every deal I look at, built into a tool you can use in under five minutes.
Run it on the next property you look at before you spend another hour on a deal that was never going to work.
Use the free Philadelphia Deal Finder below to analyze your next deal in minutes.