Reserve have resulted in an increase in long-term mortgage interest rates, which form the basis of most of our lending.
The market’s transition from a historically low interest rate environment to a rising interest rate environment disrupted certain sectors of the lending market, with the most acute impact felt in the consumer lending sector (e.g., residential mortgages, auto lending, consumer credit, etc). Although volatility in long-term interest rates also disrupted certain segments of the commercial real estate lending environment at times during the first half of 2022, the commercial real estate debt and property sales markets remained active. As a result, our total transaction volumes increased 56% over the first half of 2021, with the largest increases in multifamily property sales (141%), debt brokerage (41%), and Fannie Mae (72%) volumes. The product we offer that was most significantly impacted by rising interest rates was our HUD product, which declined 54% when compared to the first half of 2021. As the Federal Reserve continues to combat inflation by increasing interest rates, we expect commercial real estate debt and property sales transaction activity to slow down from second quarter peaks, but still remain quite active overall. As with the first half of 2022, we expect certain products to be impacted more than others, with debt brokerage executions in non-multifamily assets classes being impacted the most, as banks and life insurance companies pull back and potentially increase capital reserves in the second half of 2022. However, we anticipate Agency lending volumes to accelerate in the second half of 2022. As the broader capital markets tighten, the Agencies historically step in to provide liquidity to the multifamily borrowing community as they did throughout 2020 and the second half of last year, and as one of the largest providers of capital to the multifamily sector, we are well positioned. As interest rates increased over the last several months, we have experienced declines in credit spreads to offset a portion of the interest rate increases. Although our lending activity with the Agencies may remain strong in the second half of 2022, the servicing fees and associated profitability of those executions may decline.
We are a market-leading originator with the Agencies, and we believe our market leadership positions us well to continue gaining market share and remain a significant lender with the Agencies for the foreseeable future.
The FHFA establishes loan origination caps for both Fannie Mae and Freddie Mac each year. In October 2021, the FHFA established Fannie Mae’s and Freddie Mac’s 2022 loan origination caps at $78 billion each for all multifamily business. During the three months ended June 30, 2022, Fannie Mae and Freddie Mac had multifamily origination volumes of $18.7 billion and $14.7 billion, respectively, up 71.6% and 12.2%, respectively, from the same period in 2021. During the six months ended June 30, 2022, Fannie Mae and Freddie Mac had multifamily origination volumes of $34.7 billion and $29.6 billion, respectively, up 7.1% and 9.2% from the first half of 2021, respectively, leaving a combined $91.7 billion of available lending capacity for the remainder of the year, or 43% more lending volume than the GSEs delivered to the multifamily market in the first half of 2022.
As part of FHFA’s 2022 loan origination caps, at least 50% of the GSEs’ multifamily business is required to be targeted towards affordable housing. Additionally, in 2021 the FHFA raised the GSEs’ combined LIHTC investment cap to $1.7 billion, up 70% from the previous cap of $1.0 billion. We intend to leverage our affordable debt financing and our newly acquired LIHTC syndication platforms to create additional growth opportunities for our debt financing, property sales, and LIHTC syndication platforms.
As noted above, our debt financing operations with HUD declined during the first half of 2022. HUD loan volumes accounted for 1.4% and 2.5% of our total debt financing volumes for the three and six months ended June 30, 2022, respectively, compared to 6.8% and 7.5% for the three and six months ended June 30, 2021, respectively. The decline in HUD debt financing volumes as a percentage of our total debt financing volumes was driven by a combination of higher HUD debt financing volumes in the first half of 2021 and the increasing interest-rate environment discussed above.
Our originations with the Agencies are our most profitable executions as they provide significant non-cash gains from MSRs that turn into significant cash revenue streams from future servicing fees. During the three and six months ended June 30, 2022, servicing fees were up 7.5% and 8.8%, respectively, compared to the same periods in 2021, due to the growth in our Agency servicing portfolio over the last year. A decline in our Agency originations would negatively impact our financial results as our non-cash revenues would decrease disproportionately with debt financing volume and future servicing fee revenue would be constrained or decline.
Our multifamily property sales volumes continued to grow significantly in 2022, as (i) the multifamily acquisitions market continues to be very active and (ii) we continue to expand the number of property sales brokers and geographical reach of our property sales platform. Long term, we believe the market fundamentals will continue to be positive for multifamily property sales. Over the last several years, and throughout the pandemic, household formation and a dearth of supply of entry-level single-family homes led to strong demand for rental housing in most geographic areas. Consequently, the fundamentals of the multifamily property sales market were strong prior to the pandemic, and, when combined with low vacancies, rent growth and rising real-estate prices, it is our expectation that market demand for multifamily property sales will continue to grow as this asset class remains an attractive investment option.
Our debt brokerage platform continued its growth from 2021, with brokered volume increasing during the year. The increase in volume