Same-Store Communities
Our Same-Store Community properties, those acquired, developed, and stabilized prior to April 1, 2018 (for the quarter-to-date comparison) and January 1, 2018 (for the year-to-date comparison) and held on June 30, 2019, consisted of 38,177 and 37,959 apartment homes and provided 87.6% and 88.1% of our total NOI for the three and six months ended June 30, 2019, respectively.
Three Months Ended June 30, 2019 vs. Three Months Ended June 30, 2018
NOI for our Same-Store Community properties increased 4.2%, or $7.0 million, for the three months ended June 30, 2019 compared to the same period in 2018. The increase in property NOI was attributable to a 3.7%, or $8.6 million, increase in property rental income, which was partially offset by a 2.3%, or $1.5 million, increase in operating expenses. The increase in property income was primarily driven by a 2.7%, or $5.9 million, increase in rental rates and an 11.5%, or $2.7 million, increase in reimbursement and ancillary and fee income. Physical occupancy remained the same at 96.9% and total monthly income per occupied home increased 3.7% to $2,183.
The increase in operating expenses was primarily driven by a 16.4%, or $1.4 million, increase in repair and maintenance expense, offset by a 9.0%, or $1.4 million, decrease in personnel expense as a result of fewer employees, and a 4.7%, or $1.2 million, increase in real estate taxes, which was primarily due to higher assessed valuations.
The operating margin (property net operating income divided by property rental income) was 72.2% and 71.9% for the three months ended June 30, 2019 and 2018, respectively.
Six Months Ended June 30, 2019 vs. Six Months Ended June 30, 2018
NOI for our Same-Store Community properties increased 4.1%, or $13.6 million, for the six months ended June 30, 2019 compared to the same period in 2018. The increase in property NOI was attributable to a 3.7%, or $17.2 million, increase in property rental income, which was partially offset by a 2.7%, or $3.6 million, increase in operating expenses. The increase in property income was primarily driven by a 2.7%, or $11.6 million, increase in rental rates and a 12.1%, or $5.6 million, increase in reimbursement and ancillary and fee income. Physical occupancy stayed the same at 96.9% and total monthly income per occupied home increased 3.7% to $2,162.
The increase in operating expenses was primarily driven by a 15.4%, or $2.4 million, increase in repair and maintenance expense, partially offset by a 6.6%, or $2.0 million, decrease in personnel expense as a result of fewer employees, and a 4.0%, or $2.2 million, increase in real estate taxes, which was primarily due to higher assessed valuations.
The operating margin (property net operating income divided by property rental income) was 71.9% and 71.6% for the six months ended June 30, 2019 and 2018, respectively.
Non-Mature Communities/Other
UDR’s Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, which include communities recently developed or acquired, redevelopment properties, sold or held for disposition properties, and non-apartment components of mixed use properties.
Three Months Ended June 30, 2019 vs. Three Months Ended June 30, 2018
The remaining 12.4%, or $24.8 million, of our total NOI during the three months ended June 30, 2019 was generated from our Non-Mature Communities/Other. NOI from Non-Mature Communities/Other increased by 61.3%, or $9.4 million, for the three months ended June 30, 2019 as compared to the same period in 2018. The increase was primarily attributable to a $13.1 million increase in stabilized, non-mature communities NOI and a $1.7 million increase in NOI from acquired communities, partially offset by a $2.6 million decrease in NOI from sold and held for disposition communities and a $2.3 million decrease in NOI from non-residential/other.