Real Estate Score Methodology

The Real Estate Score is Secrets.RealEstate's overall assessment of a property location, expressed as a letter grade from A+ to F. It combines 18 key metrics across 5 pillars: Safety & Security (~17%), Investment Value (~19%), Living Comfort (~21%), Risk Exposure (~23%), and Lifestyle & Access (~20%). This provides an objective, data-driven evaluation to help you make informed real estate decisions.

Each of the 18 metrics is first graded from the underlying data on a five-star scale. We then take the weighted average of all metrics — using weights that reflect each metric's importance to buyers — scale it to 0-100, and translate the result into a letter grade from A+ (95 and above) to F (below 35). Metrics confirmed as unavailable for a location are left out of the average.

The 0-100 result maps to letter bands: A grades (85-100) mark exceptional locations, B (70-84) excellent areas with strong fundamentals, C (55-69) solid value propositions with balanced pros and cons, D (40-54) budget-friendly options with notable trade-offs, and E or F (below 40) locations with serious weaknesses across several pillars. Plus and minus signs mark 5-point steps within each band.

That depends on your needs, budget, and goals. A-grade locations command premium pricing, B-grade areas combine strong fundamentals with more accessible prices, C-grade locations are often good value propositions, and D-grade or below can suit budget-conscious buyers or renovation strategies. Rather than chasing the highest grade, check the pillar breakdown to see whether a location is strong in the dimensions that matter most to you.

Weights are based on real estate market research and buyer preference studies. Risk Exposure (~23%) carries the largest weight because hazards like flooding or soil contamination can be deal-breakers. Living Comfort (~21%) covers daily quality of life: noise, air, water, climate, and sun. Lifestyle & Access (~20%) reflects schools, public transport, shops, and recreation. Investment Value (~19%) captures location pricing, resale liquidity, and market trend. Safety & Security (~17%) consists of crime analysis — the single most heavily weighted metric in the score. These weights reflect what typically drives property values and buyer decisions.

Risk Exposure condenses up to 18 individual hazards from official French risk data into four indicators. Natural risks cover flooding — the most heavily weighted hazard — earthquake, ground movement, coastal risk and erosion, clay shrink-swell, and wildfire. Environmental risks cover soil pollution and radon. Technological risks cover classified industrial sites, nuclear facilities, and hazardous-goods pipelines, rated by the worst hazard found. Rarer site-specific risks — avalanche, cyclone, volcanic eruption, dam failure, mining subsidence, rising groundwater — are averaged into one indicator.

Secrets.RealEstate computes the Real Estate Score from official French open data and independent measurements: the national GeoRisques hazard registers, official crime statistics, school data, notarial transaction records for pricing and resale liquidity, and environmental data such as noise, air quality, water quality, and climate, plus neighborhood amenities from OpenStreetMap. The full source list is on our licenses page.

Scores are dynamically updated as new data becomes available from our sources including government databases, environmental monitoring agencies, crime reports, school metrics, and economic indicators. Most data refreshes monthly or quarterly, though some metrics like air quality can update daily. This ensures scores reflect current conditions.

Not necessarily. Lower grades (D and below) often represent opportunities for specific investment strategies or budget-conscious buyers. These properties might be ideal for renovation projects, rental investments, or first-time buyers. The key is aligning the grade with your goals - a C-grade location might be perfect if you're seeking value and have tolerance for certain trade-offs.

Grades are relative to regional contexts and are best compared within similar markets. A B grade in a major metropolitan area represents different characteristics than a B grade in a rural region. For cross-regional comparisons, focus on the pillar breakdown rather than just the overall grade to understand specific strengths and weaknesses.

Priority depends on your personal situation. Families often emphasize school quality and safety. Young professionals might prioritize mobility and lifestyle amenities. Investors focus on appreciation potential and rental demand. Retirees may value healthcare access and low crime. Review the detailed metric grades to see how properties align with your specific priorities.

Use the score as one tool in your decision process, not the sole factor. Start by filtering properties within your target grade range, then dive into specific metrics that matter most to you. Visit properties, consider factors we can't measure (like personal preferences), and consult with local real estate professionals. The score provides objective analysis to complement your subjective evaluation.