Skip to content
ZeroHouse

ZEROHOUSE KNOWLEDGE

When to Order a Review of an Existing House Design

A design review is most useful before procurement and irreversible work. It identifies conflicts and establishes what needs correction or clarification.

Standard designs and substitutions

A standard design needs site adaptation. Changing blocks, insulation or windows can affect loads, moisture behaviour and junctions even when dimensions look similar.

Basements and difficult ground

Check that foundation and waterproofing follow the investigation. Uncertainty about ground conditions cannot be resolved by a superficial plan review.

Glazing, ventilation and junctions

Extensive glazing needs summer-performance assessment. Missing ventilation layouts or junction details justify resolving those questions before related orders are placed.

Equipment added late

Heat pumps, PV and batteries affect space, electricity, controls and maintenance. Check compatibility with architectural decisions already made.

Construction already underway

Separate completed work, committed orders and changes still possible. Concealed work needs as-built evidence; drawings do not prove construction.

Review output

A useful report identifies the issue, consequence, priority, owner and closure evidence. A general verdict that the design is good is insufficient.

Document set → risks → priorities → revisions → recheckDocument setrisksprioritiesrevisionsrecheck
ZeroHouse assessment diagram; not a construction detail.
Project review matrix
ItemParameterCheck / result
Before procurementRevise solutionFewer dependencies
During worksAs-built conditionEvidence
After reviewClose issuesNew revision

What this means for your project

Use the contact form to describe the issue and available documents. Arrange drawing transfer separately; the form does not claim file-upload capability.

Sources and scope of review

Checked: 2026-09-09. Editorial guidance; not evidence of compliance for an individual building.

Related reading

All guides in this topic · Design audit

Open the calculator

Building envelope