The Investifique Deal Index is a practical screening score for Portugal property investors. It turns a messy property listing into a structured first-pass view: is this worth underwriting properly, visiting, negotiating, or rejecting?
It is not a valuation certificate, legal opinion, tax recommendation, or profit guarantee. It is a decision filter. The goal is to help investors spend time on opportunities that have a real reason to exist, not just attractive photos or a hopeful rent estimate.
What is the Investifique Deal Index?
The Deal Index is Investifique's internal methodology for ranking property opportunities against a repeatable set of investor questions:
- Is the asking price below the local benchmark after adjusting for size, condition, floor, and location?
- Does the rent support the price after vacancy, IMI, condominium costs, insurance, and maintenance?
- Can the property carry conservative debt assumptions without becoming fragile?
- Does renovation create a measurable rent, resale, or liquidity improvement?
- Are there risk flags that explain the apparent discount?
The index sits on top of the site's core guides: undervalued properties in Portugal, rental yield, cap rate, DSCR, and break-even rent.
What inputs go into the score?
The score uses listing-level inputs, market-level benchmarks, and underwriting assumptions. At screening stage, the system is deliberately conservative. A listing should earn a high score because the downside still works, not because the best case is exciting.
| Input group | What it checks | Related guide or tool |
|---|---|---|
| Price delta | Asking price versus comparable local price per m2, adjusted for property characteristics. | Undervalued property guide |
| Income quality | Gross rent, realistic vacancy, operating costs, and resulting net operating income. | Rental yield guide |
| Debt resilience | DSCR, LTV sensitivity, break-even rent, and interest-rate stress. | DSCR calculator |
| Renovation gap | Whether works can unlock rent, resale value, or liquidity after realistic cost and delay. | Renovation ROI calculator |
| Location liquidity | Depth of buyer and tenant demand, time-on-market risk, and exit optionality. | Lisbon area guide |
| Operating cost fit | IMI, condominium fees, insurance, maintenance, and tax drag versus income. | Rental property calculator |
How is the 100-point score weighted?
The base score is 100 points. Risk flags can reduce the final score when the listing has issues that a simple yield calculation would miss.
| Category | Weight | Why it matters |
|---|---|---|
| Price delta | 25 | Buying below a defensible local benchmark creates margin before any operational improvement. |
| Income quality | 20 | Rent must survive vacancy, running costs, and tax assumptions. |
| Debt resilience | 20 | A deal that fails DSCR or break-even stress can become fragile even if the yield looks good. |
| Renovation gap | 15 | Works only help when the value or rent uplift is larger than the cost, delay, and execution risk. |
| Liquidity and time on market | 10 | Better liquidity reduces exit risk and makes mistakes easier to correct. |
| Operating cost fit | 10 | Recurring costs decide whether headline rent becomes durable cash flow. |
Risk flags are not another positive category. They are deductions. Examples include unresolved legal documentation, unexplained price discounts, heavy condominium liabilities, weak natural light, hard-to-finance condition, or rent assumptions that depend on illegal or uncertain use.
What does each score band mean?
How does the index avoid false bargains?
A false bargain is a property that looks cheap because the model is missing the reason it is cheap. The Deal Index tries to separate genuine mispricing from explained discounts.
For example, a low price per m2 can be attractive, but it may be fully explained by a poor floor, deferred building works, low ceiling height, legal uncertainty, or renovation that will not lift achievable rent. Likewise, a high gross yield can disappear after the cap rate, DSCR, and break-even rent checks.
The methodology gives more credit to opportunities where multiple independent signals agree: below-zone price, credible rent, conservative debt coverage, and a realistic improvement plan. It gives less credit to deals that rely on one optimistic assumption.
How should investors use the score?
Use the Deal Index as the first gate, not the final answer. A high score should trigger diligence. It should not replace diligence.
- Screen the property against the Deal Index band.
- Run the numbers in the rental property calculator.
- Stress debt in the DSCR calculator and, if relevant, the LTV stress-test tool.
- For works-heavy deals, compare the plan with the renovation ROI guide and fix-and-flip framework.
- Only then decide whether to visit, negotiate, or pass.
Practical use: the best deals usually do not win on every category. They win because the weakness is visible, priced in, and manageable.
Sources and methodology notes
- Investifique methodology, first published 2026-07-04.
- Supporting pages: undervaluation, rental yield, cap rate, DSCR, break-even rent, renovation ROI, and fix-and-flip guides.
- This page is educational and intended for screening. It is not legal, tax, mortgage, valuation, or investment advice.
Frequently asked questions
Is the Investifique Deal Index investment advice?
No. The Deal Index is a screening methodology for comparing property opportunities. Investors should still verify legal, tax, mortgage, valuation, and rental assumptions with qualified professionals before making an offer.
What is a strong Deal Index score?
A score of 80 or higher means the opportunity deserves immediate review. Scores from 65 to 79 are watchlist candidates. Scores below 65 usually need a lower price, stronger rent evidence, or a specific strategic reason.
Does a high Deal Index score guarantee profit?
No. A high score means the deal appears attractive against the inputs available at screening time. It does not remove execution risk, financing risk, tenant risk, renovation risk, or market risk.
Which metrics influence the Deal Index most?
The highest-weighted inputs are price delta, income quality, and debt resilience. Renovation gap, liquidity, operating cost fit, and risk flags can meaningfully change the final score.