Thanks, Bob. Our new contracts were up 21% in January, up 14% in February and up 17% in March. And our cancellation rate for the quarter was 8%. 51% of our first quarter sales were the first-time buyers, and 57% were inventory homes. Our community count was 219 at the end of the first quarter, compared to 200 a year ago, and the breakdown by region is 101 in the northern region and 118 in the Southern region.
During the quarter, we opened 21 new communities while closing 15. We currently estimate that our average 2024 community count will be about 10% higher than 2023. We delivered 2,158 homes in the first quarter, delivering 72% of our backlog. And at March 31, we had 4,500 homes in the field versus 4,300 homes in the field a year ago, up 6%. Revenue increased 5% in the first quarter. Our average closing price for the first quarter was $471,000, a 3% decrease when compared to last year's first quarter average closing price of $486,000. Backlog average sale price is $528,000, up from $522,000 a year ago. Our first quarter gross margin was 27.1%, up 360 basis points year-over-year and up 200 basis points from our fourth quarter. And our construction costs were flat in the first quarter compared to last year's fourth quarter.
Our first quarter SG&A expenses were 10.5% of revenue compared to 10.0% a year ago. Our first quarter expenses increased 10% versus a year ago. Increased costs were due to our increased community count, higher selling expenses, and increased headcount and incentive compensation. Interest income, net of interest expense for the quarter was $6.9 million, and our interest incurred was $8.7 million.
We are very pleased with our returns for the first quarter. Our pretax income was 17% and our return on equity was 21%. During the quarter, we generated $187 million of EBITDA compared to $147 million in last year's first quarter. And our effective tax rate was 23% in the first quarter compared to 24% in last year's first quarter. Earnings per diluted share for the quarter increased to a first quarter record $4.78 per share from $3.64 per share last year, up 31%, and our book value per share is now $95, a $16 per share increase from a year ago.
Now Derek Klutch will address our mortgage company results.