{
 "record_id": "ddfdca9d11843f81e9f91bacfe723acfa0d83bbb",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Energy Retrofitting for the Modern Heritage Enhancement in Weak Real Estate Markets: The Olivetti Housing Stock in Ivrea",
  "year": 2022,
  "doi": "10.3390/su14063507",
  "country": "Italy",
  "region_city": "Ivrea and Eporediese area (31 surrounding municipalities), Piedmont",
  "sample_start": 2019,
  "sample_end": 2020,
  "property_type": "mixed",
  "price_type": "listing",
  "data_source": "Immobiliare.it listings 2019-2020: DS = 1154 ads (Eporediese area), SS = 248 ads (city of Ivrea)",
  "document_type": "journal",
  "estimators": [
   "spatial_error"
  ],
  "spatial_method": "Spatial Error Model (GeoDa), lambda 0.321 (DS) / 0.246 (SS)",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 1154,
  "ai_methods": [],
  "notes": "Dependent variable log total listing price (EUR). Tables print Coefficient, Std.Error, z-Value, Probability (t field holds the z-value). Variables selected by forward stepwise. Two misprints flagged (BN coefficient; HD and UD standard errors). SS is a subsample of DS."
 },
 "models": [
  {
   "model_id": "T4-DS",
   "table": "4",
   "column": "Coefficient",
   "page": 15,
   "dep_var": "log total listing price (logTLP), EUR",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 1154,
   "r2": 0.664,
   "se_or_t_in_parentheses": "se",
   "sample_subset": "DS: Ivrea + 31 municipalities of the Eporediese area"
  },
  {
   "model_id": "T5-SS",
   "table": "5",
   "column": "Coefficient",
   "page": 16,
   "dep_var": "log total listing price (logTLP), EUR",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 248,
   "r2": 0.62,
   "se_or_t_in_parentheses": "se",
   "sample_subset": "SS: city of Ivrea only"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-DS",
   "var_name_printed": "PT (Villa)",
   "taxonomy_id": "dwelling_type",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.381,
   "se": 0.038,
   "t": 9.903,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Villa vs other property types (condominium, detached); z-value column"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "BC (Building Class-Economic)",
   "taxonomy_id": "condition",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": -0.114,
   "se": 0.035,
   "t": -3.281,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Building category dummy (economic/medium/noble; Italian cadastral building class)"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "BC (Building Class-Medium)",
   "taxonomy_id": "condition",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": -0.065,
   "se": 0.031,
   "t": -2.079,
   "p": 0.037,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Building category dummy"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "BC (Building Class-Noble)",
   "taxonomy_id": "condition",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.135,
   "se": 0.047,
   "t": 2.862,
   "p": 0.004,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Building category dummy"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "FA (Floor area)",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 0.004,
   "se": 0.001,
   "t": 22.816,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Floor area, m2 (mean 139)"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "TR (Terrace)",
   "taxonomy_id": "terrace_balcony",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.105,
   "se": 0.025,
   "t": 4.126,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": ""
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "US (Unit Status-Partially renovated)",
   "taxonomy_id": "renovation",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.271,
   "se": 0.038,
   "t": 7.105,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Unit status dummy, ref. not renovated"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "US (Unit Status-Renovated)",
   "taxonomy_id": "renovation",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.466,
   "se": 0.042,
   "t": 10.962,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Unit status dummy, ref. not renovated"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "EPC (Energy Performance Certification -B and over)",
   "taxonomy_id": "energy_efficiency",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.162,
   "se": 0.066,
   "t": 2.45,
   "p": 0.014,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "EPC class B or better dummy"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "HT (Heating Type-independent)",
   "taxonomy_id": "heating",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.106,
   "se": 0.021,
   "t": 5.013,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Independent (autonomous) heating vs central"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "E (Elevator)",
   "taxonomy_id": "accessibility",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.101,
   "se": 0.033,
   "t": 3.054,
   "p": 0.002,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": ""
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "BN (Bathrooms number)",
   "taxonomy_id": "bathrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.958,
   "se": 0.017,
   "t": 5.728,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "medium",
   "notes": "Printed coefficient 0.958 with SE 0.017 is inconsistent with printed z=5.728 (implies beta ~0.098); probable misprint, recorded as printed"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "HD (Distance from the nearest highway exit)",
   "taxonomy_id": "highway_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -1.42e-05,
   "se": 5.628e-05,
   "t": -2.517,
   "p": 0.011,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "medium",
   "notes": "Distance unit not stated; sample mean 6151 implies metres. Printed SE 5.628e-05 inconsistent with z=-2.517 (implies SE 5.6e-06); recorded as printed"
  },
  {
   "model_id": "T4-DS",
   "var_name_printed": "RE (Retail services)",
   "taxonomy_id": "commercial_distance",
   "x_transform": "other",
   "x_unit": "index",
   "beta": 0.248,
   "se": 0.083,
   "t": 2.98,
   "p": 0.002,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Retail services indicator (numeric, mean 0.21; presence/density of retail services, not a distance)"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "BC (Building Class-Noble)",
   "taxonomy_id": "condition",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.35,
   "se": 0.078,
   "t": 4.454,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": "Building category dummy"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "FA",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 0.005,
   "se": 0.001,
   "t": 12.813,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": "Floor area, m2 (mean 112)"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "US1 (Unit Status-Partially renovated)",
   "taxonomy_id": "renovation",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.237,
   "se": 0.073,
   "t": 3.248,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": "ref. not renovated"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "US2 (Unit Status-Renovated)",
   "taxonomy_id": "renovation",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.398,
   "se": 0.085,
   "t": 4.68,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": "ref. not renovated"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "HT (Heating Type-independent)",
   "taxonomy_id": "heating",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.135,
   "se": 0.046,
   "t": 2.933,
   "p": 0.003,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": ""
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "PG (Private Garden)",
   "taxonomy_id": "garden",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.152,
   "se": 0.065,
   "t": 2.343,
   "p": 0.019,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": ""
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "OL (Building Olivettian Connotation)",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.174,
   "se": 0.066,
   "t": -2.658,
   "p": 0.008,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": "Modern-heritage (Olivetti company) architectural connotation dummy"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "UD (Distance from the UNESCO site)",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -9.921e-05,
   "se": 3.49e-05,
   "t": -2.845,
   "p": 0.004,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Distance to centre of UNESCO site 'Ivrea, industrial city of the 20th century'; unit not stated, mean 1520 implies metres; SE printed as '-3.49e-05' (sign misprint), consistent with z"
  },
  {
   "model_id": "T5-SS",
   "var_name_printed": "EPC (Energy Performance Certification-B and over)",
   "taxonomy_id": "energy_efficiency",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.311,
   "se": 0.14,
   "t": 2.219,
   "p": 0.027,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "high",
   "notes": ""
  }
 ]
}