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Appendix 11

Methodology of Land Use Survey for "OU(B)" Zones

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(1) @ The purpose of the sampling survey is mainly to find out the vacancy and the predominant use of the industrial floor space in OU(B) zones.
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(2) @ The frame of the random sampling survey covered all flatted factory buildings, purpose-built factory buildings, industrial-office buildings and warehouses/godowns in the 18 OU(B) zones.  Among a total of 57,587 units in 813 buildings, a random sample of 34,045 units was taken.
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(3) @ Internal floor area (IFA) for each selected unit as in December 2008 obtained from the Rating and Valuation Department (R&VD) was used as the basis of the subject Assessments.  For analysis purpose, the figure was converted into gross floor area (GFA) by multiplying 1.3333.
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(4) @ Predominant use (i.e. use occupies 50% or more in floor space) in each selected unit will be recorded during the on-site inspection.  If a single company is operating in several units within an industrial building, the major use of these units would be collectively recorded as the predominant use of these units.
(5) For each selected unit, information was collected through the following ways during the survey period from 1.7.2009 to 30.9.2009:-
(a) direct face-to-face interview with the staff at the unit;
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@ @ (b) @ if (a) above is unsuccessful after the visit, a letter will be left to the unit to request the responsible person to complete the questionnaire enclosed and return to PlanD.  Alternatively, the responsible person may choose to complete the questionnaire through a telephone interview by the PlanD staff;
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@ @ (c) @ if (a) and (b) above are unsuccessful, any information on the concerned unit collected from the management office/neighbouring units will be used; and
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@ @ (d) @ if all the above are unsuccessful, the unit is classified as a non-response case.
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(6) @ Based on the results of the survey, the relative standard error of the territorial vacancy rate is 0.19%.  The enumeration results of the survey are summarized as follows:-
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No. of Units

GFA (m2)

(a)    Size of the Population

57,587

15,371,259

(b)    Sample Size

34,045

9,348,654

(c)    Successfully Surveyed

28,415

8,166,104

(d)   Non-response

5,630

1,182,550

(e)    Response Rate

83.5%

87.4%

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Broad Factors for Determining Building Conditions
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In determining building conditions, the presence and degree of seriousness of the following factors are taken into account:
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@ @ (a) @ structural defects (e.g. cracks in outer walls, bulging or sagging walls, rusted steel in beams or supports); and
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@ @ (b) @ signs of wear and tear (e.g. rusted/defective exposed drain pipes and gutters, flaking/decaying external finishes including paint works on facades, rusted/insecured appendages on external walls, and rusted/defective window frames/panes).
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Definitions of Vacancy Rate and Take-up
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Vacancy rates (from 2004 to 2008): the percentage of industrial floor space not physically occupied at the time of the survey conducted at the end of the year.  The figures are sourced from R&VD.
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@ @ i.e. @ Vacancy Rate = total floor area of vacant units total floor area of all units of buildings in OU(B) zone
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Vacancy rate (for 2009): the percentage of industrial floor space not physically occupied as observed during the survey.
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@ @ i.e. @ Vacancy Rate = estimated total floor area of vacant units (based on sample survey conducted by PlanD) total floor area of all units of buildings in OU(B) zone (from R&VD)
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Take-ups (from 2004 to 2008): the net increase of industrial floor space as compared to previous year.
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@ @ i.e. @ Take-up =

nenew industrial buildings completed in the year (from B.O.O. returns) + vacancy at the beginning of the year (by R&VD) V industrial buildings demolished in the year (from B.O.O. returns) V vacancy at the end of the year (from R&VD)

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Site 1    Shau Kei Wan PDF 1.7MB Site 10   Kwun Tong PDF 3.2MB
Site 2    Wong Chuk Hang PDF 1.7MB Site 11   Castle Peak Road / Wo Yi Hop Road PDF 4.9MB
Site 3    Chai Wan PDF 2.8MB Site 12   Kwai Chung Road PDF 4.8MB
Site 4    Chai Wan East PDF 1.5MB Site 13   Texaco Road, Tsuen Wan PDF 2.3MB
Site 5    Tai Kok Tsui PDF 2.9MB Site 14   Chai Wan Kok PDF 3.2MB
Site 6    Cheung Sha Wan PDF 2.1MB Site 15   Tsing Yi PDF 1.6MB
Site 7    Hung Hom PDF 1.9MB Site 16   Shek Mun PDF 2.5MB
Site 8    San Po Kong PDF 2.3MB Site 17   Tai Po PDF 2.3MB
Site 9    Kowloon Bay PDF 2.8MB Site 18   Yuen Long PDF 3.7MB