Product Updates
2026
Product Updates
2026
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TestFit 5.23: Realistic Residential Layouts with Organic Subdivisions

written by
Ryan Butler
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Residential site layouts have long defaulted to orthogonal road grids, even though that's rarely how neighborhoods actually get built. Real communities curve, branch, and terminate in ways a rigid grid never captures. Getting to that more organic result, complete with realistic terminal road conditions, has typically meant manual edits after the fact. That adds time and friction to what should be a fast feasibility exercise, and it puts the burden of realism on the designer instead of the tool.

Housing Updates

Organic Subdivisions (with Cul-de-sacs)

Organic Subdivisions is a new circulation type within the subdivision preset that generates curvilinear roads and branching intersections, producing neighborhood-style internal road networks without manual editing. Cul-de-sacs form automatically at terminal road network points, with radius controls that can be set globally or adjusted individually. A branching intensity slider gives you direct control over how aggressively roads split and curve.

Instead of defaulting to a grid or reshaping roads by hand, you select a circulation type, dial in branching intensity, and configure cul-de-sac radii at whatever level of granularity the site requires. Realistic road terminations are handled automatically, not added after the fact.

The result is more realistic residential site configurations, faster, with greater control over layout character and road termination conditions from the start, and far less reliance on post-solve manual editing to reach a credible result.

Toggling on organic circulation in TestFit

Web Updates

Welcome Screen

A central landing space now surfaces deal creation, pipeline status, saved assets, and a live view of deal activity in one place. Rather than digging through menus to find active work, you can start a new feasibility study, pick up recent work, or check on deal activity across a portfolio without hunting through separate screens.

That means less time orienting and more time spent on the actual site planning.

New welcome screen interface

Deal Pipeline View

Deals move through many stages, and keeping track of where each one stands gets hard to manage without a clear visual system. The new pipeline view organizes deals into status columns that can be rearranged, with individual deal cards displaying key stats like acreage, FAR, NRSF, and parking stalls at a glance. Cards can be dragged between columns, opened directly, filtered, or searched.

The payoff is a clearer, faster read on the state of the entire pipeline and its numbers, so priorities and next steps are obvious at a glance.

Deal pipeline view

Retail Updates

Retail Placement in Generative Design: Multiple Buildings

Generative design now supports placing multiple retail assemblies on a single parcel and iterating across multiple assembly tags within the solve filters. Each solve can evaluate a broader range of building configurations simultaneously, combining multiple assembly placements with multiple building types in a single run.

Teams get a more comprehensive feasibility picture faster, without manually rebuilding studies for each configuration variant.

Placing multiple retail buildings with generative design

General Updates

Splitview (2D + 3D)

Splitview divides the canvas into a 2D plan view and a 3D view simultaneously, with a resizable divider and the option to arrange views side by side or stacked vertically. Designers can validate massing, layout, and site conditions across both views without toggling, keeping context intact throughout the session.

The result is faster, more confident design decisions, with a presentation-ready view that's always a click away.

viewing 2D and 3D simultaneously with splitview

Grade Easements

Steep, unbuildable terrain can stay hidden in a site plan until it surfaces later as costly rework. A percentage threshold now flags terrain too steep to build on and highlights it directly in canvas, either persistently via toggle or on hover. One click generates an easement from that highlighted area, using the same streamlined workflow as flood map easements, and a separate toggle carries that easement forward automatically to any new site defined.

Grade issues surface automatically instead of requiring manual review, and easement setup stays consistent across a project rather than needing to be recreated site by site. Feasibility work reflects true buildable land from the outset, protecting timelines and reducing surprises deeper into design.

Adjusting easement grade in TestFit

Watch a Quick Overview:

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