Guides
How to Document an Old House Before Restoration Work Begins
A step-by-step guide to photographing, measuring and logging original details in an old house before restoration, so color and repair calls rest on evidence.
What to take away
- Photograph each room, elevation and mechanical space before any repair or demolition starts.
- Record measurements in one dated file set so a contractor can build from your numbers.
- Test paint and finishes for lead before scraping, since federal rules cover pre-1978 homes.
- Let your own files, not memory, settle color and repair arguments two years from now.
Filing and naming before the first photo
Start with a folder structure, not a camera. Create one folder per room plus folders for exterior, attic, basement and mechanicals. Inside each, keep photos, notes and measurements together.
Name every file with the room, the feature and the date. A name like stair-hall-newel-2025-04-03.jpg tells you more in two years than IMG_4471.jpg ever will.
Back the set up in two places. One cloud folder and one external drive is enough. Print a one page index to keep on the job site.
A room-by-room photo sequence
Follow the same order in every room so nothing gets skipped.
- Stand in the doorway and shoot the full room, straight on, with a tape measure in frame.
- Turn 90 degrees and repeat until all four walls are covered.
- Move close on trim, hardware, plaster cracks and window sash, again with a rule for scale.
- Open closets, crawl spaces and the electrical panel, and photograph what sits inside.
- Finish with a short video walk-through, narrating what you see out loud.
That video becomes your memory once everything is covered in dust.
Measuring and recording historic house details
Numbers turn a photo into a buildable record. Record the same categories in every room.
| What to record | Tool | Why it matters |
|---|---|---|
| Window opening width, height, depth | Tape measure, square | New sash or storms must fit the existing frame |
| Trim profile and width | Profile gauge, card tracing | Reproducing a missing section needs the actual curve |
| Board widths and floor run direction | Tape measure | Matching old growth flooring depends on width and grain |
| Wall and plaster thickness | Small ruler at a cut | Shows what is lath, plaster or later drywall |
| Hardware spacing and screw holes | Ruler, photo with scale | Original holes guide replacement choices |
Trace trim profiles on stiff card and staple the tracings into your file. Cardboard survives a toolbox better than a photo alone.
A condition log for original features
Note what is original and what is already replacement. Check nail types, paint buildup and joinery for clues about later work.
A missing piece of trim is only reproducible if you recorded its profile, width and mounting depth before it left the wall.
Walk the house with a contractor and mark each item as keep, repair or replace. Photograph the marks and the reasoning behind them.
When cracks or sagging floors worry you, hiring a structural engineer settles what is cosmetic and what is not.
Paint layers and finish evidence
Colors should come from the surfaces, not from a paint chip picked at a store. Start with reading old paint layers on a scraped exterior wall, because the deepest chip usually holds the earliest color.
Once the layers are known, period-accurate trim and siding colors give you pairings that fit the era of the house. Trim value, not wall color, decides how the facade reads from the street.
Exterior exposure also matters, so period paint colors that survive weather covers pigment and finish choices for sun, salt and freeze-thaw.
The National Park Service brief on exterior paint colors for historic buildings lists period palettes you can compare against your own chips.
Lead rules and code notes
Paint and varnish from before 1978 may contain lead. The EPA Renovation, Repair and Painting Program sets training and work practice rules for paid renovation in those homes.
Documenting existing conditions helps you and your contractor scope the job and price containment correctly. Photograph any chalking, peeling or dust before work starts.
Records for permits and tax credits
Photographs, measurements and a written condition log support permit applications and historic review. If the building is certified historic, the National Park Service explains federal tax incentives for qualifying rehabilitation costs.
Keep receipts and the condition log together in the same folder set. Reviewers want to see what existed before work began, not only the finished result.
