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2. Existing homes on flood plains Baseline Existing homes at risk of flooding, number 69000 107000 129000 140000 157000 602000 Option X Total cost of
2. Existing homes on flood plains | ||||||
Baseline | ||||||
Existing homes at risk of flooding, number | 69000 | 107000 | 129000 | 140000 | 157000 | 602000 |
Option X | ||||||
Total cost of retro-fitting flood resistance and/or resilience measures, /home | 15000 | 15000 | 18000 | 20000 | 20000 | 20000 |
Cap on cost to be paid by household, /home | 1000 | 5000 | 10000 | 15000 | 15000 | |
Subsidy from general taxation, /home | 14000 | 10000 | 8000 | 5000 | 5000 | |
Tax revenue available each year, million pa | 200 | 100 | 100 | 50 | 50 | 500 |
3. Benefit to households of improved flood resistance and/or resilience | ||||||
Number of households receiving a subsidy, number pa | 14286 | 10000 | 12500 | 10000 | 10000 | 56786 |
Proportion of these homes flooding each year, % pa | 1.40% | 1.40% | 1.40% | 1.40% | 1.40% | |
Number of these homes flooding each year, number pa | 200 | 140 | 175 | 140 | 140 | 795 |
Average reduction in flood damage per household due to flood-resilience measures funded by the subsidy net of cost to household of the improvements, pa | 19,000 | 15,000 | 10,000 | 5,000 | 5,000 | |
Aggregate benefit from the subsidies, million pa | 3.8 | 2.1 | 1.8 | 0.7 | 0.7 | 9 |
Equity weighting | 2.25 | 1.45 | 1.05 | 0.75 | 0.45 | |
Equity weighted benefit from subsidies, million pa | 8.6 | 3.0 | 1.8 | 0.5 | 0.3 | 14 |
Benefits of subsidy after equity weighting, million pa | 0.0 | |||||
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