Senja Heights Sales Brochure: Site Plan and Floor Plans senja-heights.pdf   HDB Senja Heights is a small estate of 552 units close to the fringe of Bukit Panjang's West-NW sector. Fortunately, it is buffered by a future park and future HDB high-rise residental estates. As these estates are just next to Kranji Expressway (noisy). The facing directions are either N3 or S3 facing stacks/units. N3 Stacks/units 301, 303, 281, 283, 309, 311 313 & 315 has the double au