De Wolf Realty Co (DWR) has been providing high-level residential property management services in Northern California since 1879, and its home office is in San Francisco. The types of properties it manages are large apartment complexes, single family homes and flats, condominium apartments, and apartment buildings, including multi-family communities. DWR provides physical management of its portfolio of properties using preventative maintenance tracking, sophisticated facilities management, and state-of-the-art accounting services. The company consistently achieves low vacancy rates. Residential management assistance and benefits include the following: expert in rent control ordinances, 24-hour emergency response, lease administration, once-per-year property and unit inspection, and coordination of routine maintenance, repair and preventative maintenance of HVAC systems, smoke detectors, and fire escapes.