Specifications include, but are not limited to: Tenderloin Neighborhood Development Corporation (TNDC) and HKIT Architects request statements of interest, qualifications and proposals from firms interested in providing professional services, including engineering, construction management, and related services, for the design and construction of 266 4th Street, a family affordable housing project. The Project proposes the construction of an 8- or 9-story residential building with approximately 1,000 square feet of ground floor retail space, common areas and shared residential amenity spaces, an approximately 700 square foot on-grade planted courtyard, garden and play space, and an approximately 1,400 square foot top-floor terrace. The building would contain approximately 54,000 square feet of residential use, with 70-81 affordable units targeted to households earning 60% AMI or below, pursuant to the City and County of San Francisco’s Mayor’s Office of Housing and Community Development (“MOHCD”) guidelines. The apartments will occupy floors 2-9, and consist of a range of types -- from studios to two-bedroom units - - sized between 315 and 710 square feet. The building would be situated above a future SFMTA subway station under construction as part of the Central Subway Project. The Site consists of a flat, L-shaped land parcel, approximately 14,797 square feet in area; it is approximately 80 feet by 105 feet with a usable/buildable area of 8,400 square feet. It is bound to the north by Clementina Street, to the east by 4th Street, to the south by Folsom Street, and to the west by a one-story restaurant that will be redeveloped into a future high-rise hotel. The Site is a former gasoline refueling station demolished for construction of the subway station. Once the Station construction is completed in early 2019, the Site will be fenced and covered with gravel. The design team is currently evaluating feasible construction typologies and heights to accommodate the structural limitations of the station underneath. The portion of the building on top of the station (approximately 60%) will rest directly on the structure of the train station currently under construction. The structure has been engineered to accept the loads of the proposed mid-rise structure above. Due to the unique nature of the site, and dead load weight limits, a lightweight steel structure is being considered at this time, although other approaches are being studied as well. The remaining (40%) portion of this project not located over the station will rest on deep-foundation piles. There will be no basement or other spaces below grade within the site boundary.