^a Envelope mass determined from the direct scaling of the JCMT peak flux (minus the disk contribution). ^b Disk mass assuming a uniform dust temperature of 30 K. ^c Central mass from Keplerian velocity profiles (see specific references for details). ^dIRAS4A1 and IRAS4A2, respectively IRAS4B and IRAS4B' have larger scale circumbinary envelopes. ^e The compact flux in L483 is consistent with being solely from the larger scale envelope. ^f Stellar mass from Brinch et al. (2007), envelope and disk masses calculated under same assumptions as for the remainder of the sources using the continuum data from Brinch et al. ^g Brown & Chandler (1999). ^h Lommen et al. (2008), ⁱ This work. ^j IRS 54 is undetected in both interferometric and single-dish maps. A 3 upper limit to its disk mass is estimated from the SMA observations.