Between 2015/16, output is expected to increase 3.6% and 3.8%, revised down from previous predictions of 4.9% and 4.2%.
However, the CPA added this slowdown is anticipated to be temporary, with growth in private housing, commercial and infrastructure increasing output by 19.7% between 2015 and 2019.
In addition, private housing starts are expected to rise 7% in 2015 and 5% in 2016, with pubic housing falling by 10% in 2015 and 5% next year.
A rise of 13.2% is anticipated for Infrastructure in this year, with a 7.6% increase in 2016.
Economics Director, Dr Noble Francis, said: "We remain positive about prospects for the construction industry. The slowdown in Q3 activity is expected to be temporary and construction output is expected to rise by 19.7% between 2015 and 2019, driven by growth in the three largest construction sectors; private housing, commercial and infrastructure.
"Private housing starts are forecast to rise, with major house builders signalling their intention to build more homes over the next 12-18 months. Help to Buy accounts for one quarter of new build purchases and will help to sustain demand. House prices continue to increase in most regions, especially in London and the South East, illustrating a strong underlying demand.
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"Public housing, however, is expected to be adversely affected by uncertainty and a lack of funding due to the extension of Right to Buy to housing associations and cuts to social rent. As a result, public housing starts are estimated to fall 10.0% in 2015 and a further 5.0% in 2016."
Dr Francis continued: The commercial sector is forecast to enjoy growth from 2016 averaging 3.9% per year through to 2019. New offices construction is expected to be the primary driver of this growth, with increasing activity in cities such as Birmingham and Manchester as well as growth in the capital. Retail construction is expected to improve but a consolidation of expansion plans by major supermarket chains will constrain growth rates.
"Infrastructure activity continues to thrive. Output in the sector is forecast to grow 11.2% on average per year between 2015 and 2019, supported in large part by the £411 billion National Infrastructure Plan. The roads and energy sub-sectors will be strongest but work is forecast to increase throughout the forecast period in all key sub-sectors; roads, energy, rail, water and sewerage."
However, Dr Francis added there are "significant risks" while construction growth remains positive.
"Government austerity focuses on current spending rather than capital investment but the risk remains that if government cannot reduce current spending as much as it anticipates, it may cut public construction projects to achieve its aims of eliminating the public sector deficit," he said.
"In addition, within the construction industry, the key concerns regard skills shortages, which have already been reported in the housing sector but may become more prevalent across the wider industry over the next 12-18 months due to the forecast growth."
(LM)
