The builder has the drawings. Is everything shown included?

A drawing is information, not a complete agreement

A drawing is good at showing layout, dimensions, levels and relationships. It may not say:

• which exact product or finish is required;
• who supplies it;
• what preparation is included;
• what quality or performance is expected;
• who is responsible for design;
• whether the builder priced every item shown;
• what happens if another document disagrees.

A specification can fill some of those gaps. A schedule might list windows, doors, sanitaryware or finishes. The scope and quotation should then connect that information to the work being purchased.

The important question is not only, “Did the builder receive the file?” It is:

Which exact document and revision did both parties use, and what did it contribute to the agreement?

Planning drawings have a particular purpose

Planning permission and building-regulations approval are different processes. You may need both.

Planning drawings often show the size, position and appearance of the proposed development. They may not contain the technical detail or product information required to construct it. They can still impose important constraints because the approved development and planning conditions matter.

Treating planning drawings as irrelevant would be wrong. Treating them as a complete construction specification can also be wrong.

Ask your contractor:

• Were these drawings used for pricing?
• Are they detailed enough to build from?
• What further design or selections are needed?
• Who will provide them?
• When are they required?

Building-control information is not the whole specification

Building-regulations information deals with technical compliance. It does not necessarily define every product, finish, visual expectation or item you have purchased.

Government guidance also makes clear that building control does not check every material, every installation detail or every aspect of submitted information. A completion certificate is evidence of compliance, not conclusive evidence.

Building-control approval therefore does not replace:

• a coordinated construction design;
• a clear scope;
• a product and finish specification;
• evidence of what was actually installed;
• professional responsibility for the design and work.

Identify the exact revision

“Architect's plans” is not enough.

A useful document list records:

• title;
• drawing or document number;
• author or issuer;
• revision;
• date;
• purpose, such as planning, pricing or construction;
• whether it forms part of the agreed work.

This matters because files that look almost identical can contain a different window size, wall position or product note.

A filename such as ‘extension-final-v4-new.pdf’ is not reliable document control.

Latest does not always mean agreed

Your architect issues a revised kitchen drawing after the price is accepted. It may be the newest design, but it is not automatically an agreed price or instruction.

The revision might:

• clarify what was already included;
• correct an error;
• record a selection within an allowance;
• add or omit work;
• change quantities or installation;
• affect an order or programme.

The parties need to compare it with the accepted project and record the actual consequence. Sending a file does not approve its cost. Receiving a file does not make it safe to build without checking its status.

What if two documents disagree?

Suppose the drawing shows a 900 mm door and the door schedule says 826 mm.

Do not wait until the opening is built. Identify the conflict, name both revisions and ask the responsible person to resolve it.

Some contracts contain an order of precedence. That can help decide which document ranks higher. It should not be used to avoid fixing a known contradiction that may cause rework.

The resolution may need:

• a designer's clarification;
• an engineer's input;
• a corrected drawing or schedule;
• a customer decision;
• a price or programme proposal;
• regulatory review.

Five questions before accepting

1. 1Which drawings and specifications did the builder price?
2. 2What is each document's number, revision, date and purpose?
3. 3What important design or selection information is still missing?
4. 4What happens if the documents conflict?
5. 5How will a later revision become part of the agreed project?

You do not need a professional document system for every small job. A bathroom may need one dimensioned plan, a sanitaryware schedule and clear finishes. The standard is enough information for the real decisions, not the largest possible file set.

The practical conclusion

The builder having the drawings is not the same as both parties accepting everything shown.

Before work begins, turn “the plans” into an identifiable set of information that tells one consistent story with the quotation, scope, specification and price.