Townhouse construction presents a unique set of challenges - from tighter footprints and narrow lots to strict fire, acoustic, and structural compliance requirements. To support builders and designers navigating this complexity, Wesbeam has developed the Townhouse Floor Design Guide - a practical resource for smarter medium-density construction.
A Powerful Guide for Early-Stage Decision Making
This guide brings together industry context, regulatory considerations, and proven floor system detailing to help streamline design decisions early and reduce risk on site. It covers key areas including separating wall requirements, joist discontinuity, acoustic flanking, service integration, and fire-rated interfaces - all critical elements in attached residential construction.
Designed as a powerful early-stage tool, the Townhouse Design Guide provides builders, designers, developers and architects with a clear foundational overview of efficient townhouse floor design. Utilising the span tables, users can determine suitable floor depths and structural direction early in the design phase.
From there, Wesbeam’s Design Centre can take that concept and complete a detailed, certified design, refining it for efficiency, compliance, buildability and cost optimisation.
Engineered for Performance and Buildability
At the core of the guide is Wesbeam’s Australian-made LVL and LVL e-joist floor systems, engineered to maximise span capability, improve build speed, and support efficient service layouts without increasing floor depth. With comprehensive span tables, service hole guides, and common construction details, the guide is designed to be used as a real-world reference.
Backed by the expertise of Wesbeam’s in-house Design and Engineering Team, this resource reflects decades of experience delivering compliant, cost-effective floor solutions across Australia’s growing townhouse market.
Why Engage the Wesbeam Design Centre Early
Wesbeam’s Design Centre adds the most value upstream for townhouse builders – before structural decisions are finalised. On townhouse projects, small inefficiencies such as oversized beams, unnecessary steel, or inefficient joist direction are often repeated across every dwelling and stage. By aligning structural specification with practical supply and buildability early, the team reduces redesign, site clashes, and avoidable cost.
The Wesbeam Design & Estimating team brings significant townhouse floor design and engineering expertise and can certify townhouse floor structural designs with registered and insured structural engineers in every state across Australia. By engaging with Wesbeam’s Design Centre early, a significant portion of the engineering work can be completed upfront, helping streamline approvals, reduce redesign, and avoid engineering compromises later.
Common challenges, such as load paths clashing with services or layouts that comply structurally but are difficult to build, are resolved before builders hit the site. The team reviews each project from both a structural and construction sequencing perspective - optimised joist direction, simplified load paths, and repeatable framing layouts improve constructability, sequencing, and productivity.
Smarter Scaling for Multi-Lot Townhouse Projects
For builders delivering multi-lot or repeat townhouse developments, Wesbeam’s engineering approach is designed to help scale projects more efficiently while protecting margins. By standardising framing and floor systems across repeat builds, the need to re-engineer similar structural solutions for every lot is reduced.
Repeatable layouts improve estimating accuracy, minimise material waste, and support better site productivity by allowing construction teams to work from familiar, proven designs.
Maintaining consistency across project stages also helps reduce construction errors and delays, contributing to more predictable project outcomes and margin performance as project volume increases.
The Advantage of Local Manufacturing
As Australia’s only locally manufacturer of both LVL and I-joist, our engineering team supports builders every day.
Wesbeam provides builders with greater supply certainty and long-term engineering reliability. Stable local manufacturing reduces exposure to shipping delays, exchange rate volatility, and global supply disruptions, giving builders confidence when planning staged or repeat townhouse developments.
Whether you’re working on a single infill project or a multi-lot development, the Wesbeam Townhouse Floor Design Guide helps you build smarter, faster, and more sustainably - with confidence from design through to installation.
Download the guide and speak to the Wesbeam Design Centre about your next project.