For self-directed rental property investors

Find and analyze rental properties with institutional-grade rigor

SFR Portfolio Builder scans for-sale single-family and small multifamily homes in the top-ranked rental cities of major investable metros, fills in researched rent, property tax, and insurance figures, and scores every listing against your own investment goals, before you call anyone. Bring your own deals too: upload an Investment Package and get the same investment analysis in minutes.

Still building your portfolio one deal and one spreadsheet at a time? That can take weeks.

Identify your 1031 replacement portfolio in a day.

Property Database

Search thousands of for-sale properties across major investable metros, each already scored INVEST, CAUTION, or REJECT against your goals.

AI Research Chat

Chat with our AI to research markets, get answers about rent trends, appreciation, taxes, regulations, and much more.

Portfolio View

View financial projections across your entire portfolio: cash-on-cash return, return on equity, tax & depreciation, DSCR refinancing, and much more.

One Collection

Save your research, analysis, PDF reports, news, and weblinks all in one place, not scattered across folders and spreadsheets.

Beta 0.2.0

A property database, already analyzed

You're no longer limited to the deals someone sends you. Portfolio Builder scans the for-sale market in each metro, ranks its cities for long-term rental investing, and publishes listings from the top-ranked cities, each scored against your own Investment Goals.

investable metros, more added regularly
Major
investable metros, more added regularly
ranked rental cities per metro
Top 10
ranked rental cities per metro
for-sale properties, already analyzed
Thousands
for-sale properties, already analyzed

Finding the needle in a haystack. Greenwood, IN Oct 16, 2026

Map view of available listings around Greenwood, Indiana, with green pins for INVEST properties and red pins for REJECT, grouped into numbered bubbles
Map view: INVEST properties in green, with nearby listings merged into bubbles that show the count and verdict mix.

Search on your terms

Nationally, across your own markets, or one market at a time. Filter by price, cap rate, cash-on-cash return, rent ratio, property age, and verdict, pre-filled from your Investment Goals and adjustable per search.

Best-match ranking

Results are ranked for your strategy (cash flow, balanced, or appreciation) and management style (self-managed or professional), with INVEST properties first.

List or map

View results as a sortable list or a map. INVEST properties stand out as filled green pins; nearby properties merge into bubbles showing the count and verdict mix.

Market pages

Each market shows its available listings, best first, alongside your market research and a ranked-cities report for the metro.

One-click import

Import a listing into your portfolio with the same numbers and verdict you saw in search. If you haven't added that market yet, it's added for you.

Verdicts stay current

Change your goals, financing, or market assumptions and every property is re-evaluated automatically.

Researched numbers, not rules of thumb

Rent, property tax, and insurance are the line items that decide whether a rental cash-flows. Our proprietary algorithms curate each property, filling in those figures before you see it. Generic percentages overstated insurance by 3–8× on newer homes and made good deals look bad.

Rent and insurance figures are researched estimates. Confirm them before you buy.

Live metros include: Austin, TX · Birmingham, AL · Cleveland, OH · Columbus, OH · Greenville, SC · Huntsville, AL · Indianapolis, IN · Kansas City, MO–KS · Lawton, OK · Memphis, TN–MS · Ocala, FL · Oklahoma City, OK · Pittsburgh, PA · St. Louis, MO–IL · San Antonio, TX · Savannah, GA · Stillwater, OK

How the property database works →

Your Investment Criteria & Compliance Record

Every rental investment property, whether you found it in the database or uploaded it yourself, is scored against your own investment rules across five filters, producing an objective verdict: INVEST, CAUTION, or REJECT.

Data Quality

Confirms every figure pulled from an investment package or listing is complete and reliable before it touches your investment analysis.

Fiduciary

Cap rate, cash-on-cash return, LTV, break-even occupancy, and net cash flow, scored against your own investment rules.

Market Fundamentals

Vacancy trends and rent growth for the property's specific metro, not a national average.

Price-to-Rent Ratio

Flags properties priced ahead of what local rents can support.

Capital Preservation

An inflation-adjusted exit hurdle, so the verdict accounts for what your capital needs to do over the hold period.

From listing or Investment Package to verdict

Built for investors evaluating multiple candidate properties across one or more markets — including a dedicated 1031 dashboard for exchange investors tracking cash and debt replacement, boot, and the 45-day identification and 180-day closing windows.

  1. 1

    Find or upload

    Search the property database for listings that fit your goals, or drop in an Investment Package or listing PDF and Claude extracts purchase price, rent, expenses, cap rate, and cash-on-cash return. You can also enter a property by hand.

  2. 2

    Run the Fiduciary Filter

    Five filters score the deal against your own rules and return a verdict: INVEST, CAUTION, or REJECT.

  3. 3

    Review 30-year projections

    NOI, equity, cash flow, and property value projected annually, using per-market assumptions for appreciation, rent growth, vacancy, taxes, and expenses.

  4. 4

    Compare, import, and track

    Stack up to five properties side by side, import the ones you want, then track committed capital and allocation across your full portfolio.

Built for the self-directed SFR investor

Not a generic calculator, not a curated deal platform. Portfolio Builder combines a scored property database, AI research and extraction, rules-based fiduciary scoring, and 30-year market-aware projections in one place, purpose-built for single and multifamily rental investment properties.