The arrangement of rooms during the nineteenth century is not known with certainty. The 1839 reference to eight rooms suggests that as originally built the house had four rooms on each floor, with perhaps no effort to use the attic as living space, at least until the time of Fountain Beattie who added dormers to the attic and used this top floor to help accommodate his large family. This inference is strengthened by the fact that prior to the 1940's the central core of the house was laid out in this manner. [Illustration: Figure 10. GREEN SPRING FARM MANSION HOUSE, Floor Plans, 1969] The major renovation of the house in the early 1940's was planned and carried out by Walter Macomber and resulted in the addition of a wing on the west end of the central block (in which a new kitchen was installed), conversion of the old kitchen wing on the east end of the central core into a living room with a small sunporch attached, rearrangement of the stairways and central hallway, and certain other interior changes. This involved removal of substantial amounts of the original materials in the house and replacement by material considered to be suitable in terms of age and texture. These changes are reflected in the exterior appearance and interior room arrangement of the house at the present time. Further structural changes were made in 1960. At this time it was discovered that the second floor was sagging because of the removal of bearing walls in 1942 when the first floor was converted from four rooms into two.[88] This situation was corrected by pouring concrete footings in the basement and setting in them a series of steel columns. These columns ran up through the wall on the west side of the central hallway and were topped by a steel beam running the width of the house. The joists for the second floor were anchored in this new beam.[89] At the same time this structural reinforcement was being added, several closets, cabinets, and bookcases were built into the rooms on the second floor and attic, making use of space under the eaves. The remodeling done in 1960 was designed and supervised by Keyes, Lethbridge & Condon, Washington architects. At the present time, the exterior fabric appears to be sound and well maintained. On the interior, a certain amount of deterioration is evidenced in the looseness of the joints in the flooring and stairs and in the uneven settling of door frames in the original portion of the house. The grounds adjacent to the house are in good condition and appear to be well maintained. TECHNICAL DESCRIPTION--EXTERIOR. _Overall Dimensions._ Width: 78 feet by 25 feet in central section, and 20 feet in wings. Height: central section, two and one-half stories; wings, one and one-half stories; sunporch, one story. _Foundations._ The central section of the house stands on brick foundations which are carried up through the basement walls.