Thanet terrain study3D existing / proposed comparison
NAVD88 · feet Open 2D evidence map

Two properties · plan and terrain evidence

Read the grade change in three dimensions.

Compare official 2015 bare-earth terrain for 29 Thanet and Governors Lane with the supported portion of the April 2026 grading proposal. Rotate the landform, reveal one surface over the other, then inspect the proposed northern retaining wall beside the legal parcel boundary.

Interactive terrain room

29 Thanet Circle

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Drag to orbit · scroll or pinch to zoom · right-drag to pan

Proposed building evidence

Buildings A-J

Select a building in the model for evidence details.

Schematic principal masses only. Architectural drawings are illustrative and building strips are subject to change.

Schematic existing context

Governors Lane Units 1-65

Select a Governors Lane building entity for confidence details.

Footprints and unit mapping are evidence-backed. Heights and neutral pitched roofs are low-confidence assumptions, not measurements.

Proposed landscape evidence

101 reviewed plants

Select a proposed buffer plant for source, size, and GH-base details.

All audited symbols lie on the GH high-side strip between the legal boundary and retaining-wall envelope. Positions and interpolated bases are explanatory, not survey or staking coordinates.

Proposed minus existing LoweringLittle changeRaising feet of vertical change · only where both surfaces are supported

Guided reading

010203

Start with the landform

Follow a three-step view of both existing landforms, supported proposed grading, and the northern retaining wall.

Retaining-wall evidence

Seven plan-derived GH/GL pairs

1.07 ft3.94 ft5.66 ft6.06 ft6.50 ft6.28 ft1.13 ft

High-side minus low-side plan grades. GH means grade high; GL means grade low. These are plan differences, not measured wall heights.

Read before interpreting

What the model can and cannot show

Evidence register

Sources & method

29 Thanet existing terrain
USGS 3DEP, 1-meter bare-earth DEM, acquired April 6, 2015; NAVD88 feet after conversion. USGS response SHA-256:
a878d82cfc5c41864b583700b2bc49e64dacb177576973e71e29c512b3cc1f28
Governors Lane existing terrain
Independently masked USGS 3DEP terrain from the same April 6, 2015 acquisition, projected into the 29 Thanet scene without resampling. USGS response SHA-256:
d5fee2330f036ab6aa2f402d7ddc3fffa0fcc1ed2ac8ded7eaa30ca7ab89c196
Proposed surface
Reconstructed from 25 accepted controls on the April 24, 2026 grading plan; unsupported cells excluded. Built September 1, 2026. Source-plan PDF SHA-256:
c5a416ae2d5161968222e00437add4c6095880ec292f0465e8527eed67a9d990
Proposed northern retaining wall
Seven reviewed GH/GL pairs from page 9 of the April 24 plan. The wall face is interpolated only between adjacent stations and remains separate from the legal parcel boundary.
Proposed buildings A-J
Principal footprints registered only from accepted Site Plan Sheets 7-8; Sheet 6 is review-only. Architectural source SHA-256:
ccaf141d7e9afde615d7e742c1bdc062cff582bce6c7ff9bbeb85075d8c45bf5
Illustrative drawings state that building strips are subject to change.
Governors Lane buffer plants
101 individual symbols audited from Landscape Plan A, page 15. All are reviewed on the GH high-side strip between the legal boundary and retaining-wall envelope. Bases interpolate or endpoint-hold seven direct Grading Plan A GH stations; no reconstructed proposed surface supplies plant elevations.
Comparison
Proposed minus existing on one exact 202 × 319 grid. Values are explanatory, not construction quantities.

USGS 3DEP · NJGIN · Princeton ALTA survey · Princeton April 2026 site plan