Latest JCS updates can be found on the link above.
The document is in the hands of a Government inspector who will judge whether the plan is sound and can go forward in its present form.
We have challenged the JCS over inflated projected housing figures and the need to redraw Green Belt boundaries.

Ian Bickerton from Cheltenham Alliance  has recalculated the required housing numbers upto 2031, using the following equation

Number of Additional Houses by 2031 = (Population Increase / Household Size) + Number of Current Houses

Area                         No of Current houses    Population Increase by 2031        Household Size        No of Additional Houses required by 2031
Gloucester                      50363                    143900                  2.41                        9347
Cheltenham                    50929                    131200                  2.25                        7382
Tewkesbury                    35126                     97300                   2.31                        6995


The values for population increase and household size are taken form the latest population projections from the ONS which were published in May 2014.

This gives a total of 23724 houses, for the JCS area, required by 2031.
(the JCS propose over 30,000)
With the housing stock of 18900, this leaves approx 4850 houses to be located on strategic sites over a 20 year period.

Although the latest JCS document doesn't state their exact calculation method , we believe it is likely to be  a combination of overestimating the increases in population and/or underestimation of average household size.