Samson Properties · DC / Baltimore / NoVA · 11 Years
Jack
Seiden
Realtor · Licensed in MD, DC & VA
"I built the tools I always wished existed for my clients."
240-370-7333 jdseiden@hotmail.com
The most honest real estate tools ever built for this market
Most buyers make the biggest financial decision of their lives with a generic mortgage calculator and a gut feeling. These tools were built to do better — ZIP-specific, life-stage adjusted, and brutally honest about when buying makes sense and when it doesn't.

11 years in the DC, Baltimore, and NoVA markets went into every appreciation rate, every neighborhood thesis, every warning label. The AI personalizes it to your actual life.
This site uses AI — see disclaimer below
Try the Rent vs. Buy Tool → All Tools
The Approach
Built on real market knowledge, not national averages

Most online real estate tools use national appreciation averages, generic maintenance rates, and one-size-fits-all advice. They're built to make buying feel inevitable. These tools were built to do the opposite.

Every appreciation rate in the Rent vs. Buy Advisor is ZIP-code and property-type specific — Riverdale Park townhouses are modeled differently than Downtown Baltimore condos or Crystal City near Amazon HQ2. Every neighborhood has an investment thesis. Every verdict accounts for your age, your kids, your career, and your actual financial situation.

11 years of on-the-ground experience in this market went into the data. The AI personalizes it to you.

Consumer Tools — Free, No Signup
Two tools.
One honest answer.
Built on 99 ZIP codes across the DC, Baltimore, and NoVA markets. Tell me your situation — I'll tell you what actually makes sense.
01 — Featured Tool
The Honest
Calculator
Put in your ZIP, income, down payment, and life situation. Get back a plain-English verdict — with the crossover year, your actual monthly costs, a 10-year financial model, and an AI narrative that reads like advice from someone who knows this market.

Life-stage adjusted. Career mobility scored. DTI checked. Neighborhood thesis included. This isn't a calculator — it's the conversation you should be having before you make an offer.
Run your analysis — free, no signup →
02
Find My
Neighborhood
Tell me how you like to live — urban or suburban, commute tolerance, walkability, schools, nightlife, budget. I'll match your lifestyle against 99 ZIP codes and rank the best fits, with a map, top 3 narrative, and "same feel, lower price" alternatives if your dream neighborhood is out of reach.
Find your neighborhood →
Market Research — Data & Analysis
For agents, investors,
and the data-curious.
Raw market data across 99 ZIP codes in the DC/Baltimore/NoVA CSA. Price-to-rent spreads, appreciation rates by property type, and market signal breakdowns. Not personalized — just the data.
Data Tool
Price-to-Rent Spread Map
Interactive map of price-to-rent spreads across 99 ZIP codes. See which markets are undervalued relative to rental income, with trajectory scoring and live spread calculations.
Explore the map →
Research Report
ZIP Analysis & Market Tiers
Deep-dive on undervalued ZIPs across the CSA — tiered A/B/C by conviction level, with investment thesis, appreciation drivers, risk signals, and market outlook for each area.
Read the report →
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Important Disclaimer
These tools use artificial intelligence and may contain errors. All projections, appreciation estimates, neighborhood assessments, and financial outputs are generated by AI models and should be treated as informational starting points — not financial, legal, or investment advice. Market conditions change; ZIP-level data reflects historical patterns and my own market judgments, not guaranteed future performance.

Nothing on this site constitutes a recommendation to buy or sell any specific property. Before making any real estate decision, consult a licensed mortgage professional, tax advisor, and/or financial planner in addition to working with a licensed real estate agent. Past appreciation does not guarantee future results. AI-generated analysis may contain inaccuracies — always verify key numbers independently.

Jack Seiden is a licensed Realtor with Samson Properties in Maryland, DC, and Virginia. This site is independently operated and reflects his personal market views.