Purchases of brand new, single-family homes rose by 3.3 percent in April, according to data released Wednesday from HUD and the U.S. Census Bureau.

"The increase in April sales activity is in line with other important housing measures that have shown continued, gradual improvement from the first quarter as more consumers look to take advantage of today's low interest rates and affordable home prices," noted National Association of Home Builders (NAHB) Chairman Barry Rutenberg, in the report.

"In markets where demand is rising, we could be seeing a faster pace of recovery if not for persistently tight lending conditions that are slowing both the building and buying of new homes."

On a regional basis, new-home sales rose 7.7 percent in the Northeast, 28.2 percent in the Midwest and 27.5 percent in the West in April. The South was the only region to post a decline for the month, of 10.6 percent.

"Today's report is representative of the kind of modest but consistent gains that we expect to see in new-home sales through the remainder of 2012," said NAHB Chief Economist David Crowe.

"As indicated by our most recent builder surveys, more consumers are taking advantage of historically low mortgage rates amidst firming economic and job market conditions in certain areas."

Meanwhile, the inventory of new homes for sale held virtually unchanged at just 146,000 units in April, which is a historically slim 5.1-month supply at the current sales pace.