Fannie Mae is working on building an in-house unit to value mortgage servicing rights, according to industry officials who’ve been briefed on the GSE’s plans. However, it’s unclear at this point how far along Fannie is. A spokesman for the company declined to comment to Inside The GSEs about the matter. Officials familiar with the effort, including one former GSE executive, said Fannie is looking to value MSRs for two main reasons: to better judge counter-party risk on mortgage bankers that sell residential loans to the company, and perhaps to better value the asset because it may have plans to buy or finance servicing rights in the future.