What Drawings Are Needed Before Starting a Renovation

Reading time: ~4 min

Many renovations start with inspiration for interiors, furniture, and colors. The truth, however, is that a successful renovation starts with proper planning and technical documentation.

Without clear drawings, common issues include:

• incorrectly placed outlets
• moving installations during renovation
• additional costs
• delays in construction work

A well-prepared set of drawings provides clear instructions for all contractors and helps the renovation be executed exactly as planned.

In this article, we will look at what drawings are needed before every renovation.

1. Functional Layout

The functional layout is the foundation of the entire project.

It determines:

• furniture placement
• how the space is used
• room ergonomics

Typically, two layout variants are developed so the client can choose the best solution for their lifestyle.

After the choice, one revision is made if necessary, and a dimensioned final furniture plan is prepared.

This plan shows:

• exact furniture dimensions
• their position in space
• the basis for all technical installations

Virtually all other drawings are based on it.

2. Demolition and Construction Plan

For more serious renovations, space changes are often necessary.

This drawing shows:

• which walls are demolished
• which new walls are built

The plan is important for the construction team because it provides a clear space structure before the renovation begins.

3. Electrical Plan

The electrical plan is one of the most important drawings.

It shows:

• outlets
• switches
• connections for appliances and AC units
• internet and TV

A well-planned electrical plan prevents common problems such as:

• insufficient outlets
• inconvenient placement
• visible cables and extension cords

It is directly related to the functionality of the home.

4. Lighting Plan

Lighting has a huge impact on the atmosphere and comfort of the space.

The lighting plan defines:

• main lighting
• accent lighting
• decorative light points

It also shows the grouping of lighting to different switches, allowing control of various lighting scenarios.

5. Plumbing Plan

The plumbing plan is especially important for:

• kitchens
• bathrooms
• wet rooms

It shows:

• position of water supply outlets
• drainage
• connections for appliances like dishwashers and washing machines

Plumbing installation errors can be expensive and difficult to correct after the renovation is complete, making this plan crucial.

6. Flooring Plan

The flooring plan shows the zoning of different flooring types.

It includes:

• flooring type in each zone
• laying direction

This drawing helps contractors predict exact material quantities as well as clean transitions between different flooring types.

Final Drawing Set for Contractors

After developing all plans, a final PDF set is prepared and provided to contractors.

It includes:

• dimensioned final furniture plan
• demolition / construction plan
• electrical plan
• plumbing plan
• lighting plan
• flooring plan

This set creates complete clarity for all project participants.

What the Client Actually Receives

Well-prepared project documentation provides:

Functional planning
Optimal use of space according to the client's needs.

Technical structure
Clear instructions for contractors.

Cost control
Better budget planning and fewer unforeseen costs.

Risk reduction
Avoiding errors and changes during renovation.

Complete clarity
All project participants work from the same documentation.

This is exactly why a professionally prepared project saves time, stress, and money during renovation.

Key Takeaways

• The functional layout is the foundation for all other drawings.
• Electrical, plumbing, and lighting plans prevent costly mistakes during renovation.
• The flooring plan ensures accurate quantities and clean transitions.
• The final PDF set creates complete clarity for contractors.
• Professional renovation planning saves time, stress, and money.