A remodeling plan should begin with the building as it exists today. Before moving a wall, redesigning a kitchen, ordering cabinetry, or estimating materials, you need an existing floor plan that records the current rooms, openings, fixed features, and critical dimensions.
A reliable existing plan gives homeowners, designers, remodelers, and contractors a shared starting point. It helps separate what is already there from what will be removed or added, and it reduces the risk of designing around outdated drawings or incomplete site notes.
What is an existing floor plan?
An existing floor plan is a measured top-down drawing of a property in its current condition, before remodeling work begins. It shows the arrangement and dimensions of rooms, walls, doors, windows, stairs, and fixed features. Depending on the project, it may also show ceiling changes, plumbing fixtures, appliances, electrical points, structural elements, and room areas.
You may also hear the terms existing-conditions plan, as-is floor plan, measured floor plan, or as-built plan. In practice, teams sometimes use these terms interchangeably. However, “as-built” can have a more specific contractual meaning on some construction projects, so name the drawing according to the client, consultant, or local authority's requirements.
Existing, demolition, and proposed plans are different
| Drawing | What it shows | Why it is used |
|---|---|---|
| Existing floor plan | The property as it is before work begins | Creates the factual baseline for design, estimating, and approvals |
| Demolition plan | Walls, fixtures, finishes, or equipment to be removed | Communicates the removal scope to the contractor |
| Proposed floor plan | The intended layout after remodeling | Communicates the new design and construction scope |
Keeping these drawings separate makes changes easier to understand. Do not erase existing features from the base plan simply because the remodel will remove them. Document the current condition first, then create demolition and proposed versions from that verified baseline.
Why create an existing floor plan before remodeling?
- Design from real conditions: Confirm the usable space instead of relying on assumptions or old property records.
- Plan around constraints: See where doors, windows, stairs, columns, plumbing, and equipment limit possible layouts.
- Improve estimates: Give contractors clearer quantities and room relationships when preparing a scope or quotation.
- Coordinate the team: Provide designers, trades, owners, and consultants with the same reference drawing.
- Reduce repeat visits: Preserve more site information for questions that arise after the first survey.
- Support approvals: Some permit or landlord submissions require existing and proposed plans, although requirements vary by location and project type.
Prepare for the site visit
A small amount of preparation makes the existing-conditions survey more complete and easier to process.
- Confirm which rooms, floors, and exterior connections are included in the remodel.
- Collect old plans, listings, sketches, and renovation records, but treat them as references until verified onsite.
- Ask whether concealed areas, locked rooms, utility spaces, or tenant areas will be accessible.
- Clarify the expected deliverable: a PDF plan, editable DXF, 3D model, point cloud, or a combination.
- Decide which dimensions control cabinetry, appliances, doors, bathroom fittings, or other fabricated elements.
- Charge devices, confirm storage, and test the selected capture app before arriving.
How to create an existing floor plan before remodeling
1Define the complete project area
Capture more than the exact feature being changed. A kitchen renovation may depend on an adjacent dining area, hallway, utility connection, or exterior door. A bathroom remodel may be affected by a nearby plumbing wall or floor-level change.
Establish the limits of the plan before measuring so connected spaces are not accidentally omitted.
2Walk through the property first
Inspect the route before scanning or measuring. Open internal doors where permitted, identify mirrors or highly reflective surfaces, note cluttered or narrow zones, and look for changes in floor or ceiling height. Decide where each capture will start and finish.
For complex properties, divide the site into logical areas instead of treating every space as one uninterrupted task. Pay special attention to stairs, open-plan rooms, closets, alcoves, and connections between floors.
3Capture the current room geometry
You can measure manually with a tape and laser distance meter, or use an indoor LiDAR scanner to record connected spatial geometry. Move steadily, maintain visual context between adjoining spaces, and capture walls from more than one angle when furniture or openings block the view.
Do not focus only on the center of the room. Include wall junctions, doorways, window openings, floor edges, and enough of the ceiling to understand height changes.
4Record doors, windows, and openings
For each door, capture its position, width, height, opening direction, hinge side, and relevant frame or reveal depth. For each window, record its position, width, height, sill height, and distance to the ceiling where it affects cabinets, curtains, or lighting.
Also document sliding doors, archways, open passages, skylights, and any blocked or partially concealed opening.
5Add vertical and fixed features
A floor plan is viewed from above, but a remodeling design depends on vertical information. Record ceiling heights, beams, bulkheads, soffits, sloped ceilings, steps, and changes in floor level.
Locate columns, fireplaces, built-in cabinets, sanitary fixtures, radiators, HVAC equipment, and appliances that will remain. Add wall elevations or annotated photographs when a plan view cannot communicate the detail clearly.
6Mark services and project constraints
Record plumbing supplies and drains, electrical outlets, switches, lighting points, ventilation, data connections, meters, panels, and other visible services relevant to the remodel. Note which features are confirmed and which require further investigation.
Do not infer concealed pipes, wiring, structure, or wall construction from a surface scan. These may require drawings, inspection openings, detection equipment, or a qualified professional.
7Verify critical dimensions onsite
Check dimensions that directly affect fabrication, ordering, clearance, safety, or code compliance. Examples include cabinet runs, appliance openings, door clearances, stair geometry, ceiling constraints, and plumbing locations.
Use independent control measurements to check the plan: overall wall lengths, diagonals, room width and length, or distances between fixed reference points. Resolve important discrepancies before leaving.
8Review and refine the floor plan
Compare the draft with scan data, measurements, and photographs. Correct wall boundaries, add missing doors and windows, label rooms, and check how adjoining spaces connect. Do not force irregular rooms into perfect rectangles unless the actual measurements support that geometry.
Separate verified information from assumptions. If an area was inaccessible or a dimension could not be confirmed, mark it for follow-up rather than presenting it as exact.
9Label and export the existing plan
Title the drawing clearly as “Existing Floor Plan” or “Existing Conditions Plan.” Add the project address or identifier, floor level, date of survey, units, room names, and drawing scale when applicable.
Choose the export according to the next step. A PDF is convenient for review, estimating, and sharing. An editable DXF allows a designer or CAD technician to develop demolition and proposed plans from the existing geometry. Point clouds or 3D models may provide additional spatial context for advanced workflows.
Existing floor plan quality checklist
- Every room and connecting space in the project area is included
- Wall sequence and overall footprint are consistent
- Doors, windows, openings, and stairs are correctly positioned
- Ceiling and floor-level changes are documented
- Fixed features and relevant services are shown
- Room names and units are clear
- Critical dimensions have been independently verified
- Inaccessible or uncertain conditions are identified
- The drawing is labeled as existing, not proposed
- The export format matches the next stage of work
Two scan-to-floor-plan workflows for remodeling
C1 + Creative App + Creative Portal
FJD Trion C1 is purpose-built for indoor floor plan capture. Scan the existing rooms in the FJD Trion Creative app, review coverage and the floor plan draft onsite, and use the integrated laser distance meter to check critical dimensions.
Upload the project to Creative Portal to keep the 3D mesh in view while refining walls, adding doors and windows, and exporting an editable DXF or floor plan report.
V4e Go + Creative App + Creative Portal
FJD Trion V4e Go is a compact handheld LiDAR scanner for broader reality-capture needs. For an indoor remodeling floor plan, use it with the Creative app to view the scan in real time, check for missed areas, and review the project before leaving.
Upload the indoor project to Creative Portal to review the mesh, adjust walls, add doors and windows, and export the finished floor plan. V4e Go is also suited to teams whose work extends beyond interiors.
When to use other FJD Trion tools
| Tool | Best fit | Role in an existing-conditions workflow |
|---|---|---|
| V4e Go | Compact projects requiring more versatile indoor or outdoor 3D capture | Captures point clouds for floor plans and other spatial deliverables |
| P2 | Larger or more complex buildings and professional reality capture | Provides a higher-capability handheld scanning workflow when the project extends beyond straightforward room plans |
| FJD Trion Model Web | Browser-based processing, viewing, measurement, sharing, and cloud deliverables | Supports point cloud workflows and can generate floor plans, PDF plans, and OBJ models through its interior design features |
| FJD Trion Model for PC | Local point cloud processing and professional desktop workflows | Supports processing, analysis, visualization, and export for teams working with scan data locally |
Common mistakes to avoid
Using old plans without checking the property
Previous drawings may not reflect later renovations, field changes, finish thicknesses, or the current arrangement. Compare them with present conditions instead of treating them as the final source.
Capturing only the room being remodeled
Adjacent circulation, services, wall thicknesses, and connected rooms may affect the design. Define a project boundary that includes the context required for decisions.
Confusing scan completeness with design readiness
A scan can preserve extensive spatial information, but the floor plan still needs review, labeling, refinement, and critical-dimension checks.
Guessing concealed conditions
Surface geometry does not confirm hidden framing, pipes, wiring, or structural capacity. Mark unknowns and investigate them using appropriate methods.
Starting the proposed plan before the existing plan is stable
If the base drawing changes midway through design, layouts, quantities, and consultant work may need revision. Verify the existing plan before using it as the foundation for proposals.
Frequently asked questions
What should an existing floor plan include?
It should include the current room layout, wall positions, doors, windows, openings, stairs, room names, and relevant dimensions. Depending on the remodel, also include ceiling changes, fixed features, plumbing fixtures, appliances, services, and structural elements that can be observed or verified.
What is the difference between an existing floor plan and an as-built plan?
Both can describe current conditions, and the terms are often used interchangeably in smaller projects. However, “as-built” may refer to a formal record of completed construction under specific contract or authority requirements. Confirm the expected terminology and standard for your project.
Can I use the original house plans for a remodel?
Use them as a reference, but verify them onsite. Buildings change over time, and original drawings may not represent field construction, later alterations, or current finishes accurately.
Do I need a LiDAR scanner to create an existing floor plan?
No. A simple room can be measured manually with a tape, laser distance meter, sketch, and photographs. A LiDAR scanner becomes more valuable when documenting multiple rooms, irregular geometry, furnished spaces, or repeat projects where a connected digital record saves time and context.
Which file format should I export?
Use PDF for straightforward review, estimating, printing, or submission when accepted. Use DXF when a designer or contractor needs editable geometry for CAD. Use point cloud or 3D model formats when the next stage requires more complete spatial context.
Can a scanned floor plan be used for permits?
It can provide the existing-conditions basis for a permit drawing, but requirements vary. Some authorities require a particular scale, title block, drawing set, or licensed professional. Check local requirements before submission.
Build the remodel on a verified baseline
An existing floor plan is more than a preliminary sketch. It is the reference that connects the current building to the proposed design. Capture enough context, verify dimensions that control the work, identify unknowns, and export a plan the next person can use confidently.
For focused indoor remodeling projects, C1 provides a direct path from room capture and laser verification to an editable floor plan. For teams that need a more versatile scanner across indoor and outdoor work, V4e Go can use the same Creative app and Creative Portal floor plan workflow while supporting broader capture requirements.
Create your existing floor plan before the first design revision
Capture the current space, verify what matters, and refine an editable floor plan in FJD Trion Creative Portal.
How to Measure a Room for an Interior Design Project
Laser Measure vs. Indoor LiDAR Scanner