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Robin Edwards H ampshire County Council. Population and Household Forecasts for Output Areas Methods and Uses. Contents. Land Availability Monitoring System (LAMS) Use of LAMS data in Population Forecasting Model Outline of Complete Small Area Population Forecasting Model (SAPF)
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Robin EdwardsHampshire County Council Population and Household Forecasts for Output Areas Methods and Uses
Contents • Land Availability Monitoring System (LAMS) • Use of LAMS data in Population Forecasting Model • Outline of Complete Small Area Population Forecasting Model (SAPF) • Outputs from Model and Uses
Main Features of Land Availability Monitoring System (LAMS) • Planning decision and planning monitoring system • All planning consents granted in the county • All sites allocated in local and structure plans • Record created for each site and mapped on to GIS • Development progress – starts, completions • Estimated phasing of outstanding development
Sites with Full Planning Permission Dwellings by • Number • Type • Tenure • Number of bedrooms • Completion year(s), actual or estimated
Remaining Sites • Sites with Outline Planning Permission • Dwellings by number (estimated), type, tenure and estimated completion year • Allocated Sites • Dwellings by number and completion year (both estimated)
LAMS Information into SAPF Model For each record • Output area code via link with GIS • Number of completions by type, tenure, number of bedrooms and year • Number of losses by year • Estimated phasing of outstanding development on large sites by year (with details where known)
Estimating Future Completions on Small Sites Sites not phased so estimates based on: • Past completion trends • Past geographical distribution
Conversion of Dwelling Supply to Population Dwellings Type/Tenure Occupancy Rates Source: HCC Home Movers Survey 2002
Basic Model Structure • Demolitions Module • Natural Change Module • Out Migration Module • Dwelling Stock Gains Module • Other In Migration Module
Geographical Levels Recognised by Model • Output Areas • Wards • Districts • National (County)
Age Ranges Recognised by Model • Single year of age and gender • Quinary age groups by gender • Aggregated age groups by gender
Constrained Final Population Forecast • Basic assumption: in each district, rate of decline in average hhold size equals the average annual rate of decline between the two most recent censuses
Inputs Required to Calculate Constraints for Final Population
Model Outputs Population by: • 100 age groups • 2 genders • 5,400 Output Areas • 7 Forecast Years from Base Year • Hholds by age and gender of Hhold Rep • Total Dwelling Stock
Components of Forecast Population Change • Births • Deaths • Out Migration due to Dwelling Stock Loss • Out Migration from Existing Dwelling Stock • In Migration to New Dwellings • In Migration to Existing Dwelling Stock
Derived Outputs Population by • Parish • Ward • District • School Catchment Areas • Other Departmental Service Areas • Urban Areas • PCTs • Ad Hoc Areas via GIS • Economic Activity • Any Age Range