Cremation memorials

Columbarium Niche Dimensions and Planning Guide

A columbarium niche is the individual compartment that receives one or more cremation urns. Niche sizes are not universal: capacity, urn dimensions, interior system, door assembly and project standards must be confirmed before the granite elevation and component schedule are approved.

Define the columbarium niche program

Number of niches
Begin with the required interment capacity and anticipated expansion. Separate the total number of compartments from the number of urns the complete project is intended to accommodate.
Single or companion capacity
State whether each niche must hold one urn or more than one. The labels single and companion are planning terms; actual clear interior dimensions still need to be specified.
Clear internal dimensions
Record usable internal width, height and depth after accounting for liners, shelves, tapers, door hardware and other obstructions. Verify the urn dimensions against that clear space.
Future phases
For community projects, consider whether later units must align in height, door pattern, granite color, finish and numbering with the first installation.

Coordinate granite niche doors and inscriptions

Door dimensions and material
Specify each granite door's width, height and thickness along with color, finish, edge treatment and how it interfaces with the niche opening.
Attachment and access
Confirm the approved fastening method, tamper resistance, interior seal and how authorized staff will remove and replace a door for a future interment.
Inscription standards
Define name, date, emblem, portrait, lettering and layout rules early so every door provides an adequate inscription field and the finished elevation remains consistent.
Niche identification
Coordinate row and column labels, door numbers and the owner's permanent registry. The drawing and record system should use the same unique niche identifiers.

Approve the complete columbarium project

Overall elevation and components
Review the overall length, depth and height plus the cap, base, side walls, dividers, shelves, doors and any separately fabricated stone pieces.
Structure and foundation
A qualified project team should coordinate structural support, foundation, anchoring, drainage, wind or seismic requirements and applicable codes for the actual site.
Lifting and installation access
Confirm component weights, equipment access, staging space, site protection and the sequence for receiving and assembling the granite components.
Final approval package
Before production, align the approved drawing, niche schedule, granite and finish selections, inscriptions, hardware, packing plan and delivery information.