Skyfarm is one of Hillsborough's lower-density and more private western residential areas.

Development here is generally newer than in lower Hillsborough, with many homes built from the late 1970s onward and additional construction throughout the 1980s, 1990s, and later decades.

Typical parcels are approximately 0.6–1 acre or larger, and some properties extend beyond that range. Homes are more widely spaced and streets follow the natural hillside terrain.

The key distinction is that buyers should evaluate usable lot area, slope, driveway configuration, retaining walls, and how the house sits on the land rather than relying on acreage alone.

Carolands is one of Hillsborough's classic large-lot residential areas.

Many homes were built during the 1950s–1970s, with spacious Ranch homes, traditional residences, and later custom rebuilds.

Typical parcels are often approximately 0.5 acre or larger. Some elevated properties may also capture Bay or surrounding-area views.

The neighborhood is defined by mature landscaping, larger lots, and a noticeable mix of older and newer homes. Mid-century houses and recently rebuilt custom residences may appear on the same street.

Lakeview is located in the higher western portion of Hillsborough and is characteristic of upper Hillsborough.

Many homes date from the 1950s–1970s, including mid-century Ranch homes, traditional residences, and later custom rebuilds.

Typical lots are approximately 0.5–1 acre. Curving roads and cul-de-sacs are common, contributing to lower traffic and greater privacy.

Compared with lower Hillsborough, terrain is generally more varied. Buyers should pay particular attention to driveway slope, usable backyard space, overall topography, and the actual view orientation.

Ryan Tract is a mature residential area on the Burlingame side of Hillsborough.

Many homes date from the 1920s–1960s, with continued additions, remodels, and larger rebuilds over time.

Typical parcels are approximately 0.5 acre. The area includes historic estates, traditional homes, Ranch homes, and newer custom construction.

Its defining advantage is the combination of Hillsborough's low-density residential environment with convenient access toward Burlingame.

Country Club Manor is a traditional Hillsborough neighborhood with relatively level terrain and mature landscaping.

Many homes date from the 1940s–1970s, with typical parcels around 0.5 acre.

Architectural styles are varied, including Ranch, Mediterranean, Tudor, French-inspired homes, and later custom rebuilds.

Compared with western hillside neighborhoods, this area often offers more usable yards, mature tree canopy, and easier everyday access.

Homeplace is one of Hillsborough's most varied neighborhoods in both architecture and lot size.

The area includes pre-war estates, many 1950s–1970s California Ranch homes, and newer large custom residences.

Typical parcels are approximately 0.5–1+ acre, with some estate lots extending beyond that range.

A long-held Ranch home may sit only a short distance from a large Tudor or French-inspired estate, so lot size, house size, age, and renovation level vary substantially.

Hillsborough Park is an established estate neighborhood with mature landscaping and a classic residential character.

Many homes date from the 1930s–1960s, followed by decades of remodeling, additions, and rebuilding.

Typical lots are generally 0.5 acre or larger, with traditional estates, mid-century homes, and newer custom residences.

Streets are often curved and heavily landscaped. Some sections are more level than western Hillsborough, making yards and outdoor areas comparatively easier to use.

Tobin Clark Estate is one of Hillsborough's later-developed neighborhoods and is known for larger-scale residences.

Many homes were built from the late 1980s through the 2000s and beyond, making the housing stock noticeably newer than in many of Hillsborough's traditional neighborhoods.

Typical lots are approximately 0.5–1+ acre, with large custom homes and estate-style residences especially common.

Buyers often find larger interior square footage, more modern floor plans, deeper setbacks, and wider driveways.

Hillsborough Heights is a mature lower-Hillsborough neighborhood with a strong classical residential character.

Many homes date from the 1920s–1950s, with extensive remodeling and rebuilding in later decades.

Typical lots are around 0.5 acre, with Mediterranean, Tudor, French, and traditional estate architecture.

Terrain is generally more level than in western Hillsborough, mature landscaping is common, and access toward San Mateo and Burlingame is convenient, creating a balance of historic character and lower-Hillsborough accessibility.

Brewer Subdivision / Upland sits in southeastern Hillsborough and is among the town's closest residential areas to Downtown San Mateo.

Many homes date from the 1940s–1960s, with typical parcels around 0.5 acre.

Common housing includes mid-century Ranch homes, traditional residences, and properties that have undergone major remodels, additions, or complete custom rebuilds.

The area's defining feature is not oversized acreage, but rather the combination of relatively level terrain, half-acre-scale lots, and unusually strong urban convenience.