Methodology

हम साइट पर आपके द्वारा देखे गए स्कोर, रुझान और कैलकुलेटर में कच्चे यूआरए, एचडीबी और एसएलए डेटा को कैसे बदलते हैं। डिज़ाइन द्वारा पारदर्शी - प्रत्येक सूत्र प्रकाशित है, प्रत्येक डेटा स्रोत जुड़ा हुआ है।

मूल सिद्धांत

  • Authoritative data only. Every number comes from a Singapore government source — URA, HDB, SLA, ACRA, CPF Board, MAS, IRAS. No scraping of listings, no web-crawled estimates.
  • Median over average. Price-per-square-foot analyses use the median; averages get skewed by GCB trophy sales and sub-sale outliers.
  • Sample-size gates. Any period-over-period comparison requires a minimum of 3 transactions per window. Sparse months show as "—", not noise.
  • Published formulas. Every score, every calculator output is explained below or on its own explainer page.

मूल्य-प्रति-वर्ग-फुट (पीएसएफ)

PSF = transaction price ÷ strata area in sq ft, computed from raw URA caveat records. We use median PSF for district, project, and bedroom-mix comparisons. Month-over-month and year-over-year deltas require ≥ 3 transactions in each bucket.

सकल किराये की उपज

Gross yield = (median monthly rent × 12) ÷ median purchase price × 100%. Numerator and denominator are matched on the same granularity: per flat-type for HDB, per bedroom-count for condos, per district for overview pages. Mismatched granularity produces misleading yields; we reject those joins at query time.

संपत्ति स्कोर

Five composite scores are pre-computed nightly for every active condo:

  • ShiokNest Score — our overall quality index: building age-adjusted PSF, tenure, amenity density, liquidity. Weights published on the score page.
  • Investment Score — 7 weighted factors: price momentum, gross yield, liquidity, MRT distance, lease balance, district growth, en-bloc potential.
  • En-Bloc Score — collective-sale likelihood based on land area, plot ratio headroom, age, and transaction density.
  • Walkability Score — Haversine distance to 7 amenity categories within 800m (MRT, schools, hawker, mall, park, supermarket, clinic), weighted.
  • Profitability Score — % of caveats in the past 24 months where the seller sold at a profit.

कैलकुलेटर सूत्र

All calculators ship with current government-published rates: BSD/ABSD/SSD from IRAS, TDSR/MSR limits and SORA history from MAS, CPF housing withdrawal rules from the CPF Board. Rates are configured in one place (CALC_DEFAULTS) and audited when policy changes. Lease-decay valuations use Bala's Table (SLA).

डेटा ताजगी

  • URA private caveats — refreshed weekly (5-year rolling window).
  • HDB resale and rental — refreshed weekly from data.gov.sg.
  • HDB Resale Price Index — quarterly on publication.
  • Commercial rental index (Office + Retail) — quarterly.
  • ACRA business registry — monthly refresh for the business map.

ज्ञात सीमाएँ

Private caveats lag sale completion by 2–6 weeks; new-launch monthly data lags by about 6 weeks. We publish the as-of date on every chart. For the full set of sources, see the Data Sources page.