Bob Cutlip
Analyst · Janney Montgomery Scott
Thank you, Michael, and good morning, everyone.
During the third quarter, we acquired a 153,000 square foot industrial property in the Indianapolis MSA for $10.6 million; extended the leases for 4 tenants totaling 617,000 square feet, with revised lease expiration dates ranging from 2026 to 2032; executed an 8,000 square foot office lease in our partially vacant Fridley, Minnesota property; sold our 347,000 square foot industrial property in Maple Heights, Ohio for $11.4 million, resulting in a net gain of $1.2 million; and collected 99% of scheduled rental income in the third quarter without providing any abatements.
Subsequent to the end of the quarter, we acquired a 241,000 square foot industrial property in Montgomery, Alabama; sold a 3-property, single-storey office portfolio in Champaign, Illinois for $13.4 million, resulting in a gain of $4.1 million; and collected 100% of scheduled rental income in October.
As noted on earlier calls, our investment strategy is emphasizing an increase in our portfolio's industrial allocation, which we believe will improve our property operating efficiencies, reduce capital expenditure levels, and potentially result in improved valuation over time.
During 2020, we've acquired 7 properties, all industrial, at a total investment of $96.5 million with a weighted average lease term of 13.1 years and an average GAAP cap rate of 7.3%. Since January of 2019, our total investment volume has been $225 million, all of which is industrial, providing further evidence of that commitment.
Our industrial allocation has increased from 33% in January 2019 to 45% today, with an objective that Mike and I have of achieving a 60% allocation within the next 18 to 24 months. We will continue to overweight industrial acquisitions, market conditions permitting, of course, in the developed submarkets of our targeted locations. Our primary focus has been and will be acquisition candidates ranging in size from 50,000 to 300,000 square feet.
Investment opportunities during the July through October time frame were limited due to the effects of COVID-19. We did, however, acquire 2 properties during this time period as I previously mentioned, a 153,000 square foot industrial property in the I-70 corridor of the Indianapolis MSA. The total investment was $10.6 million with a 10-year remaining lease term and a GAAP cap rate of 8%. And we acquired a 241,000 square foot industrial property along the I-55 corridor in Montgomery, Alabama. The total investment was $14.25 million with 7.2 years of remaining lease term and a GAAP cap rate of 7.3%. It's interesting to note that we are very interested and excited about the I-65 corridor that extends from the Port of Mobile up through Birmingham, with increased container volumes coming into the southern part of the country.
Our asset management team continued to deliver on improving our same-store operations. During the third quarter, the team executed 4 lease extensions and one new lease: 2 office properties, 3 industrial. Our 42,000 square foot office tenant in Richmond, Virginia, extended their lease through 2026. The 67,000 square foot industrial tenant in our Chalfont, Pennsylvania property extended their lease through 2026 as well. Our 3,900 square foot industrial tenant in an Indianapolis property extended their lease through 2029. And our 504,000 square foot tenant at the Northwest Georgia inland port extended their lease through 2032. And we executed a 5-year 8,000 square foot lease in our Fridley, Minnesota office property with a lease start date of November 1. The tenant improvement allowance for the industrial properties averaged $0.95 per square foot and the office properties averaged $2.65 per square foot.
Reflecting on the first 9 months of the year, the team completed 13 leasing transactions, totaling 987,000 square feet, 8 of which were office properties. The weighted average lease term was 7.9 years. The weighted average straight line rent increased by 3% and the overall tenant improvement allowance was approximately $3 per square foot, excuse me, which is very favorable with the large percentage of office versus industrial transactions.
Our rent collection experience continues to be strong. 99% of third quarter cash rent collections were paid, and October collections were 100%. We're very pleased with our tenant performance during these challenging times for all industries. We continue to stay closely connected to our tenants' operations. There have been and we expect there will be requests from tenants for rent relief, and we will address them as we are notified by the respective tenant.
There is no doubt that each agreement will have unique business terms, however, our key objectives are to offer rent deferrals, not rent abatement; to maintain or increase core FFO per share; and to return cash flow to the proper previous level as soon as possible. As noted on the second quarter call, the company granted rent deferrals to 3 tenants in April, representing approximately 2% of total monthly rental income throughout the second quarter and 1% in the 3rd quarter. With the ongoing presence of the COVID-19 virus, we expect to continue to have conversations with other tenants requesting short-term concession.
Anticipating that many on the call are interested in lease expirations through 2020 and beyond, I wanted to summarize the team's thoughts in our current activities. We have no further lease expirations through year-end and we have $5.9 million of annualized rent expiring during 2021. And $3.7 million of that total expires at the end of the year, specifically $800,000 of annualized rent at the end of November and $2.9 million of annualized rent at the end of December. So future expirations are quite manageable.
Our largest vacancy is in Austin, as most people on the call are aware, a property formerly leased to GM, who vacated at the end of August. Our active marketing of the property with assistance from the local chamber of commerce has resulted in 7 current prospects for the building, ranging from 65,000 square feet to 320,000 square feet. Our previous GAAP rent at the property of $14.50 per square foot compares quite favorably in the submarket, with current space offerings in the low to mid-$20 per square foot on a triple-net basis. And with considerable interest from the West Coast in Chicago as well as a large Austin prospect, Tesla's decision to build a Gigafactory there and BAE's commitment to build a campus in our property's submarket, we expect a positive outcome, but must remain patient and persistent with the ongoing virus impacts.
Long term, we are positive about our same store performance as lease expirations for 2021 and 2022 average approximately 5% based on projected rental income. Therefore, overall cash flow should be stable with limited risk, enabling the team to focus on growth.
Market conditions are worthy of comment, particularly with the adverse effects from the onset of the COVID-19 virus. Year-over-year through the 3rd quarter, Real Capital Analytics reports that investment sales volume across all property types is down 57%. National research reports also reflect office property sublease space is on the rise and Cushman & Wakefield has forecasted negative office absorption over the next 2 years.
However, the continued interest in industrial properties, particularly those related to e-commerce, has resulted in no increase in cap rates for this product type in many markets and even some compressed cap rates in select locations. There is, however, some expansion of cap rates for smaller properties and those being, say, from 50,000 to 200,000 square feet in size that are more manufacturing in nature, particularly for sale-leaseback transactions in select markets, a product type that matches our interest in underwriting strength, particularly for middle market, non-rated companies, seeking capital to reinvest in their business. We will continue to monitor the evolving conditions and adjust our strategy accordingly.
And as it relates to growth opportunities, investment sales listings have moderated, driven primarily by the effect of the virus. Our current pipeline of acquisition candidates is approximately $270 million in volume, representing 16 properties, all but one of which are industrial. Of the 16 properties, 2 properties are in due diligence, totaling approximately $24 million; 3 properties are already in the letter of intent stage, totaling approximately $40 million; and the balance are under initial review. Our team is staying actively engaged in the markets as we believe acquisition opportunities will arise that we can and we will pursue.
So in summary, our third quarter activities reflected strong leasing and rental collection success, continued active engagement to identify industrial acquisition opportunities, and collectively positions us well to pursue growth opportunities.
Now I'd like to turn it over to Mike for a report on the financial results, including our capital markets' activities.