Picture of REBECCA LLOYD-JONES

REBECCA LLOYD-JONES

Through Permit Pending and Site Intel, she analyses the forces shaping residential development in real time - from planning policy and interest rates through to construction costs, infrastructure pressure, feasibility and delivery risk - translating complex market signals into grounded, practical development intelligence.

Most projects look like they should work on paper, but in reality a lot just don't stack up. Feasibility, planning and delivery, alongside design quietly determine the success of a project.

Share Post:

projects often fail because key constraints aren't identified early enough

Why projects fall apart before construction even starts

Most people assume projects fall apart during the construction phase.

Cost overruns. 
Delays.
Builder issues.

But in reality, most projects fail much earlier than that – before construction even begins.

They fail in feasibility, planning and the decisions made when everything still looks like it “should” work.

The problem isn't construction

By the time a builder is involved, a lot of the key decisions have already been made:

  • the yield has been assumed
  • the design direction is set
  • expectations are formed around cost and income

At that point, the project isn’t being created – it’s being tested.

And that’s where the problems start to show.

Where projects actually break down

Across most projects, the same issues come up again and again.

Not because the idea is bad – but because the structure behind it hasn’t been resolved.

1. YIELD DOESN'T EQUAL FEASIBILITY

A site might “fit” a certain number of dwellings.

That doesn’t mean it works.

Once you factor in:

  • real construction costs
  • planning constraints
  • site conditions
  • delivery risk

the margin often disappears.

This is one of the most common gaps in early feasibility – assuming that what fits will automatically stack.

a higher yield project, like an apartment block, may not actually save your feasibility
design alone is not the reason your project won't stack

2. DESIGN AND COST ARE DISCONNECTED

Good design doesn’t fail at concept stage.

It fails when it meets cost reality.

If design decisions are made without:

  • build cost alignment
  • construction input
  • delivery understanding

then the project is forced into:

  • redesign
  • value engineering
  • compromise

or it simply doesn’t proceed.

3. PLANNING RESHAPES THE PROJECT

Planning is often treated as a step in the process.

Reality is, it shapes the entire outcome.

Setbacks, overlooking, access, overlays – these don’t just affect approval.

They affect:

  • yield
  • layout
  • cost
  • viability

Ignoring that early creates a false sense of feasibility.

project feasibility is never determined by just one number
most projects fail long before construction begins

4. BUILDERS ARE BROUGHT IN TOO LATE

Many builders are first engaged at pricing stage.

At that point, they are:

  • pricing a fixed concept
  • working within set expectations
  • expected to “make it work”

If the project doesn’t stack at this stage, the issues isn’t construction.

It’s that the project was never properly structured.

5. THE NUMBERS "WORK" - BUT ONLY ON PAPER

This is the most dangerous version.

The feasibility looks “close enough”:

  • the margin is there
  • the concept fits
  • the assumptions feel reasonable

But once real-world factors are applied:

  • costs shift
  • constraints tighten
  • timelines extend

and the deal quietly stops working.

feasibility stress testing scenario
Initial feasibility stress testing against common market factors shows that it is not just one number that destabilises a project.

The common thread

In almost every case, the issue isn’t one number.

It’s the interaction between:

  • feasibility
  • planning
  • design
  • delivery

When those aren’t aligned early, the project becomes unstable.

Why this matters

By the time these issues are discovered:

  • time has already been spent
  • design work has already been done
  • expectations are set

Changing direction becomes: 

  • more expensive
  • more difficult
  • more constrained

That’s why early-stage structuring matters.

What actually needs to happen earlier

Before a project moves into planning or detailed design, it needs to be tested as a whole.

Not just:

  • “does it fit?”
  • or “does the feasibility look okay?”

But:

  • does it stack financially
  • does it work within planning constraints
  • can it be built as designed
  • can it be delivered within realistic assumptions

The reality

There are plenty of sites that look like they should work.

They just don’t – once everything is properly aligned.

And that’s where most projects fall over.

Not on site.

But long before they ever got there.

If you’re working through a project and the numbers, design or constraints aren’t aligning, it’s worth testing it properly before moving forward.

Because once the project is locked in, fixing it becomes significantly more difficult.

Frequently Asked Questions

Many projects don’t fail because the idea was bad. They fail because early assumptions around feasibility, planning, finance, delivery and coordination were never properly tested against real-world conditions. Below are some of the common questions emerging across residential development and pre-construction planning.

Many projects begin falling apart during the pre-construction phase due to unrealistic feasibility assumptions, planning constraints, escalating costs, consultant coordination issues or funding pressure. In many cases, the visible design is not the real problem – the underlying financial structure, project timing or delivery strategy is.

Pre-construction risk refers to the financial, planning, design and coordination issues that can affect a project long before physical construction begins. This can include feasibility gaps, planning delays, authority requirements, consultant conflicts, cost escalation, market shifts and documentation issues that place pressure on delivery outcomes.

Feasibility studies help test whether a proposed project remains financially and practically viable under real-world conditions. A strong feasibility should account for planning constraints, escalation risk, holding costs, delivery timing, finance pressure and market sensitivity – not just ideal-case assumptions.

Construction cost escalation can significantly change project viability by increasing build costs, finance pressure and contingency requirements. Projects operating with minimal buffer are particularly vulnerable to cost increases, specification changes and delays that occur between early feasibility and actual construction delivery.

Small projects can become financially risky when borrowing assumptions, sale prices, build costs or project timing are overly optimistic. Rising interest rates, longer approval timelines, consultant coordination issues and market softening can quickly reduce feasibility margins on projects that initially appeared viable.

Planning requirements, authority conditions and consultant coordination often shape project outcomes long before construction begins. Poor coordination between planning, design, engineering, finance and delivery assumptions can create delays, redesign costs and approval complications that significantly affect feasibility and delivery confidence.

Contingency requirements vary depending on project complexity, site conditions, authority requirements and market conditions. In periods of construction escalation and delivery uncertainty, relying on extremely tight contingencies can expose projects to significant financial pressure if costs or timelines shift unexpectedly.

Some projects appear viable because feasibility assumptions rely on ideal conditions rather than realistic delivery scenarios. A project may technically “work” in a spreadsheet while still carrying significant exposure to escalation, finance pressure, planning complexity, authority delays or delivery coordination risk.

Related insights

Strategic development management for developers, builders and housing providers. Helping projects move from concept to construction with greater clarity and confidence.

Practical commentary on planning, feasibility, delivery and market conditions.

No spam. Just strategic updates, commentary on planning, feasibility, delivery and market conditions.