Aside from some interior remodeling and roof repairs, the 5,362-sq.-ft. Hilliard House on Del Monte Dr. has been mostly untouched since J. Leon Osborn built it in 1936. According to the city planning department’s historical commission: “no updates to any electrical, structural or other systems have been performed.” In February, that commission approved the owners’ application to tack an extra 3,000-sq.-ft. onto the backside of the structure. The portion they’re now set to build — adjacent to a new pool — will include a network of new living rooms on the first floor and a new master bedroom suite with an adjacent office and exercise room upstairs. An added 2-car garage should also bring the property’s parking situation up to modern speed; right now, the only garaging option is a carriage house.
The site plan above shows how the building will sit on its
almost-21-acre just-over-half-acre lot after the add-on — designed by Rogelio Carrasco — is complete. Nearly everything running back adjacent to the pool is new.
Right now, the house’s backyard stretches straight back behind the rounded side tower:
The pool is planned roughly inside the green space behind the spiral staircase:
At the western edge of that lawn, the building’s addition will join the section fronted by the tall hedge in the photo above and extend all the way to the southern property line.
The drawing below shows what the house will look like from the east with its new portion. Everything to the left of the dashed vertical line is new:
The western section of the backyard is less grass and more garden:
At the corner of the house, a patio and pergola neighbor the carriage house and an adjacent utility shed:
Those features will all vanish to make way for the new garage. It’ll sit at an angle to the carriage house, forming a jagged courtyard in the southwest corner of the property:
Interior demolition work has already started as part of a full restoration the existing structure.
The house is “one of very few homes in River Oaks that remain in the hands of the original family,” according to Houston’s historical commission. It passed to its current owners in 1967. The house remained in the hands of the family that originally owned it until it was bought by its current owners within the past few years.
- Hillard House Application for Certificate of Appropriateness [Houston Architectural and Historical Commission]
Photos, drawings, and site plan: Houston Architectural and Historical Commission