Acquisitions In August 2019, we completed the acquisition of National Tax Search LLC ("NTS") for $15.0 million , subject to certain working capital adjustments, and up to $7.5 million to be paid in cash by 2022, contingent upon the achievement of certain revenue targets in fiscal years 2020 and 2021 (see Note 7 - Fair Value for further details). NTS is a leading provider of commercial property tax payment services and specializes in identifying potential collateral loss related to unpaid property tax, homeowners association fee management, and inaccurate flood zone determination. The NTS acquisition increases the Company's commercial property information offerings and is expected to drive future growth in the US. NTS is included as a component of our UWS segment. The purchase price was allocated to the assets acquired and liabilities assumed using a variety of valuation techniques including discounted cash flow analysis, which included significant unobservable inputs. We have preliminarily recorded client lists of $4.6 million with an estimated useful life of 10 years , proprietary technology of $3.2 million with an estimated useful life of 7 years , trademarks of $0.9 million with an estimated useful life of 7 years , non-compete agreements of $0.3 million with an estimated useful life of 5 years , contract liabilities of $1.8 million , and goodwill of $6.6 million , all of which is deductible for tax purposes. In December 2018, we acquired the remaining 72.0% of Symbility Solutions Inc. (Symbility) for C $107.1 million , or approximately US $80.0 million , subject to certain working capital adjustments. Symbility is a leading global provider of cloud-based property claims workflow solutions for the property and casualty insurance industry, headquartered in Canada. This acquisition further progresses our long-term strategic plan by adding scale to our insurance and spatial businesses and international presence. Symbility is included as a component of our Property Intelligence &amp; Risk Management (PIRM) segment. The purchase price was allocated to the assets acquired and liabilities assumed using a variety of valuation techniques including discounted cash flow analysis, which included significant unobservable inputs. We have preliminarily recorded proprietary technology of $14.9 million with an estimated useful life of 8 years , client lists of $6.4 million with an estimated useful life of 12 years , trademarks of $1.2 million with an estimated useful life of 4 years , $5.3 million of deferred tax liabilities, and goodwill of $75.6 million . In connection with this acquisition, we remeasured our existing 28.0% investment ownership in Symbility which resulted in a $13.3 million step-up gain that we recorded within gain/(loss) on investments and other, net in our consolidated statement of operations in the fourth quarter of 2018. For the nine months ended September 30, 2019 , goodwill decreased by $0.2 million as a result of a change in the purchase price allocation for certain working capital adjustments. In December 2018, we completed the acquisition of Breakaway Holdings, LLC d.b.a Homevisit (HomeVisit) for $12.7 million , subject to certain working capital adjustments. HomeVisit is a leading provider of marketing focused real estate solutions, including property listing photography, videography, 3D modeling, drone imagery and related services. Given anticipated synergy with our pre-existing real estate solutions platforms, this acquisition is expected to enable the next generation of property marketing solutions for real estate professionals, multiple listing services (MLSs), brokers and agents across North America. HomeVisit is included as a component of our PIRM segment. The purchase price was allocated to the assets acquired and liabilities assumed using a variety of valuation techniques including discounted cash flow analysis, which included significant unobservable inputs. We have preliminarily recorded $1.4 million for non-compete agreements with an estimated useful life of 5 years , client lists of $0.9 million with an estimated useful life of 11 years , trademarks of $0.2 million with an estimated useful life of 3 years , and goodwill of $10.4 million , all of which is deductible for tax purposes. For the nine months ended September 30, 2019 , goodwill increased by $0.1 million as a result of a change in the purchase price allocation for certain working capital adjustments. In April 2018, we completed the acquisition of a la mode technologies, LLC (a la mode) for $120.0 million , exclusive of working capital adjustments. a la mode is a provider of subscription-based software solutions that facilitate the aggregation of data, imagery and photographs in a government-sponsored enterprise compliant format for the completion of US residential appraisals. This acquisition contributes to our continual development and scaling of our end-to-end valuation solutions workflow suite, which includes data and market insights, analytics as well as data-enabled services and platforms. a la mode is included as a component of our UWS reporting segment. The purchase price was allocated to the assets acquired and liabilities assumed using a variety of valuation techniques including discounted cash flow analysis, which included significant unobservable inputs. We recorded contract liabilities of $7.5 million , proprietary technology of $15.8 million with an estimated useful life of 7 years , customer lists of $32.5 million with an estimated average useful life of 13 years , tradenames of $9.0 million with an estimated useful life of 8 years , non-compete agreements of $5.7 million with an estimated useful life of 5 years , and goodwill of $63.6 million , of which $61.4 million is deductible for tax purposes. In February 2018, we completed the acquisition of eTech Solutions Limited (eTech) for cash of approximately 15.0 million , or approximately $21.0 million , exclusive of working capital adjustments. eTech is a leading provider of innovative mobile surveying and workflow management software that enhances productivity and mitigates risk for participants in the United Kingdom (UK) valuation market. This acquisition expands our UK presence and strengthens our technology platform offerings. eTech is included as a component of our PIRM reporting segment. The purchase price was allocated to the assets acquired and liabilities assumed using a variety of valuation techniques including discounted cash flow analysis, which included significant unobservable inputs. We recorded a deferred tax liability of $1.6 million , proprietary technology of $7.0 million with an estimated useful life of 5 years, customer lists of $1.7 million with an estimated average useful life of 9 years, and goodwill of $14.1 million . These business combinations did not have a material impact on our condensed consolidated statements of operations. We incurred $0.1 million and $0.2 million of acquisition-related costs within selling, general and administrative expenses on our condensed consolidated statement of operations for the three months ended September 30, 2019 and 2018 , respectively, and $0.3 million and $1.9 million for the nine months ended September 30, 2019 and 2018 , respectively.