The growth was just 0.5 percentage points higher than the first quarter total, but still 6.1 percentage points higher than the same period last year, according to the NBS.
Analysts said the investment accelerated due to booming housing demand and robust home price hikes.
Prices of newly-built commercial residential housing in 70 large and medium-sized cities climbed six per cent year-on-year in the first quarter, according to a survey from NBS and the National Development and Reform Commission, the top economic planner.
The NBS announced the real estate climate indices hit 102.65 points, 1.43 points higher than March.
It added that, amid record investment by real estate developers, domestic bank loans rose by 26.8% year-on-year, while foreign funds also soared 91.7%.
Between January and April, the total area of developed land in China rose 4.6% to 76.15 million square metres.
Source: Property Report