June 30, 2014

December 31, 2012

Costs incurred on uncompleted contracts

$

2,322,850

$

1,807,628

Estimated earnings

2,298,842

1,229,038

4,621,692

3,036,666

Billings to date

(2,089,647

)

(1,711,587

)

$

2,532,045

$

1,325,079

Included in accompanying balance sheets under the following captions:

Costs and estimated earnings in excess of billings on uncompleted contracts

$

2,594,114

$

1,577,969

Billings in excess of costs and estimated earnings on uncompleted contracts

$

(62,069

)

$

(252,890

)