8755.0 - Construction Work Done, Australia, Preliminary, Dec 2007  
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 27/02/2008   
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DECEMBER KEY FIGURES

Dec qtr 07
Sep qtr 07 to Dec qtr 07
Dec qtr 06 to Dec qtr 07
$m
% change
% change

TREND ESTIMATES(a)

Value of work done
Building
16 252.0
-0.4
-0.6
Residential
9 660.7
-0.6
-2.0
Non-residential
6 591.8
-0.2
1.6
Engineering
12 661.3
0.6
7.9
Total construction
28 919.6
-
3.0

SEASONALLY ADJUSTED ESTIMATES(a)

Value of work done
Building
16 175.2
-2.2
-1.6
Residential
9 701.4
-0.2
-1.2
Non-residential
6 473.8
-5.1
-2.2
Engineering
12 679.4
0.7
8.6
Total construction
28 854.5
-1.0
2.6

- nil or rounded to zero (including null cells)
(a) Chain volume measures, reference year 2005-06.

Value of construction work done, Volume terms - Trend estimates
Graph: Value of constrution work done Volume terms  Trend estimates

Value of building work done, Volume terms - Trend estimates
Graph: Value of building work done Volume terms  Trend estimates



DECEMBER KEY POINTS


VALUE OF WORK DONE, CHAIN VOLUME MEASURES

TOTAL CONSTRUCTION

  • The trend estimate for the value of total construction work done remained unchanged in the December quarter 2007.
  • The seasonally adjusted estimate for the value of total construction work done fell 1.0%, to $28,854.5m, in the December quarter.


BUILDING
  • The trend estimate for the value of building work done fell 0.4% in the December quarter. Residential building work done fell 0.6% while non-residential fell 0.2%.
  • The seasonally adjusted estimate for the value of building work done fell 2.2% in the December quarter, to $16,175.2m. Residential building work done fell 0.2% to $9,701.4m and non-residential building work done fell 5.1%, to $6,473.8m.


ENGINEERING
  • The trend estimate for Engineering work done rose 0.6% in the latest quarter.
  • The seasonally adjusted estimate for Engineering work done rose 0.7%, to $12,679.4m, in the December quarter.


NOTES

FORTHCOMING ISSUES

ISSUE (QUARTER) Release Date
March 2008 28 May 2008
June 2008 27 August 2008



ABOUT THIS ISSUE

This publication provides an early indication of trends in building and engineering construction activity. The data are estimates based on a response rate of approximately 80% of the value of both building and engineering work done during the quarter. More comprehensive and updated results will be released in Building Activity, Australia (cat. no. 8752.0) on 18 April 2008 and in Engineering Construction Activity, Australia (cat. no. 8762.0) on 17 April 2008.



CHANGES IN THIS ISSUE

As noted last quarter, this release has used ARIMA modelling where appropriate for individual time series. The revision properties of the seasonally adjusted and trend estimates can be improved by the use of autoregressive integrated moving average (ARIMA) modelling. ARIMA modelling relies on the characteristics of the series being analysed to project future period data. The projected values are temporary, intermediate values, that are only used internally to improve the estimation of the seasonal factors. The projected data do not affect the original estimates and are discarded at the end of the seasonal adjustment process. The ARIMA model is assessed as part of the annual reanalysis and following the 2008 annual reanalysis 63% of the applicable Construction Work Done series and 58% of the applicable Engineering Construction Work Done series will use an ARIMA model. For more information on the details of ARIMA modelling see feature article: Use of ARIMA modelling to reduce revisions in the October 2004 issue of Australian Economic Indicators (cat. no. 1350.0).



DATA NOTES

There are no notes about the data.



INQUIRIES

For further information about these and related statistics, contact the National Information and Referral Service on 1300 135 070 or Paul Pamment on Adelaide (08) 8237 7647.