Persimmon Plc increased its planned payout to investors by 45 percent through 2021 as home sales and profit margins increased at the U.K.’s biggest homebuilder by market value.

Persimmon will pay 110 pence a share on April 1, compared with a previous plan to pay 10 pence, the York, England-based company said in a statement on Tuesday. It will return 2.80 pounds more to investors by 2021 than it had expected earlier.

U.K. house prices rose 6.7 percent in 2015, according to government statistics, on a lack of supply and rising mortgage availability. That helped Persimmon to widen its operating margin to 21.9 percent last year from 18.4 percent a year earlier.

Persimmon’s sales jumped 8 percent by volume last year to 14,572 homes and the average selling price rose 4.5 percent to about 199,000 pounds.

The company’s performance last year was “supported by improving customer sentiment and a mortgage market which is responding to customer demand,” Chairman Nicholas Wrigley said in the statement. “Customer activity in the early weeks of the 2016 spring season has been encouraging.”

Persimmon climbed as much as 5.7 percent in London trading, the most since Nov. 25, and was priced at 2,046 pence as of 8:28 a.m. The shares have gained about 20 percent over the last 12 months.

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