Dolls House Project Order: What to Do First — Wiring, Painting, Wallpaper, Flooring or Assembly?

For a typical new dolls house project, a sensible high-level sequence is:

1. Read and plan the whole project
2. Inventory and label the kit
3. Dry-fit the shell and difficult components
4. Choose the lighting system and mark cable routes
5. Sand, seal and prime where required
6. Complete the structural assembly stages required by the kit
7. Install and test concealed wiring
8. Finish ceilings
9. Paint or wallpaper walls
10. Install flooring
11. Fit stairs where they were deliberately left removable
12. Fit interior doors, windows and trim
13. Fit skirting/baseboards and cornices
14. Install light fittings and test again
15. Complete final touch-ups
16. Add furniture, accessories and styling

That is a starting framework, not a substitute for your kit manufacturer's instructions.

Some houses need selected surfaces decorated before assembly because they become inaccessible afterwards. Others are easier to decorate once the main shell is square and permanently fixed.

The correct question is not simply “before or after assembly?” It is:

Which parts will become difficult to reach after the next stage?

Do not begin by automatically gluing Step 1.

First read the entire set of instructions from beginning to end.

You are looking for:

• which components establish the structural square of the house;
• which walls or floors trap other parts once glued;
• when stairs are intended to be installed;
• whether internal partitions can remain removable temporarily;
• whether windows or doors must be fitted before or after cladding;
• whether wiring channels, slots or access holes are already provided;
• whether any decorative surfaces will become inaccessible.

This is particularly important with laser-cut, MDF and plywood kits because the assembly sequence may depend on tabs, slots, grooves and interlocking panels.

Manufacturer instructions should take precedence over a generic online sequence where structural assembly is concerned.

Make a project copy of the instructions

Keep the original instructions clean and make a working copy if practical.

On the working copy, mark:

• W for wiring stages;
• P for painting or priming;
• WP for wallpaper;
• F for flooring;
• T for trim;
• A for any part that must remain accessible.

This turns the instruction booklet into your own build plan.

Before painting, sanding or gluing, check that the major parts are present and that you know what they are.

For a kit, lay out the sheets or components and compare them with the parts list.

Useful habits include:

• photographing each sheet before removing pieces;
• writing part numbers lightly on hidden faces where appropriate;
• grouping components by floor or room;
• keeping small trims in labelled bags or trays;
• retaining offcuts that may be useful for paint, stain and adhesive tests.

Do not assume two similar-looking pieces are interchangeable.

A small difference in a tab, bevel or opening can identify a completely different component.

You do not need to choose every cushion and ornament at this stage.

You do need to decide the things that affect construction:

• which room is which;
• where major furniture is likely to sit;
• whether the house will have wired lighting;
• where ceiling lights and wall lights will be positioned;
• whether you want fireplaces, kitchen units or bathroom fixtures against particular walls;
• which rooms will be painted, wallpapered, panelled or tiled;
• what type of flooring each room will use.

This matters because a lighting point behind a wardrobe, or an electrical run exactly where a staircase must be glued, is easier to prevent now than to correct later.

A rough pencil plan is sufficient.

For furniture layout, see our How to Choose 1:12 Dolls House Furniture for Every Room.

If your dolls house will use concealed wiring, make that decision early.

Typical miniature lighting approaches include:

• tape-wire systems;
• round-wire systems;
• hybrid systems;
• individual battery-powered lights;
• combinations of wired and battery lighting.

Battery lights may require little or no hidden infrastructure.

Concealed wired systems are different. Cable or tape routes may pass:

• across walls;
• beneath floors;
• above ceilings;
• through partitions;
• through holes drilled for ceiling or wall fixtures.

If wallpaper, flooring or trim is installed first, reaching those routes later can become difficult.

Safety note

Dolls house lighting systems commonly use low-voltage supplies, but mains electricity is still involved at the power-supply side.

Follow the instructions supplied with your lighting system and transformer/power supply. Do not modify mains wiring or improvise unsuitable power supplies. If work involves mains electrical connections rather than a complete approved plug-in low-voltage system, use appropriately qualified advice.

A dry fit means assembling key parts temporarily without permanent adhesive.

Depending on the kit, you can use:

• masking tape;
• clamps;
• temporary supports;
• friction-fit tabs.

The purpose is to discover problems while they are still easy to fix.

Check:

• whether walls meet squarely;
• whether floors sit at the correct height;
• whether partitions line up;
• whether stair openings make sense;
• whether doors and windows fit their apertures;
• which corners will become difficult to wallpaper;
• which areas become inaccessible after assembly;
• where wiring can run.

Dry-fitting is also a good opportunity to place representative furniture templates into rooms and confirm the room plan.

Raw MDF, plywood and timber may need preparation before final finishes.

Typical preparation can include:

• light sanding;
• removing machining or laser residue where appropriate;
• filling unwanted gaps or imperfections;
• sealing absorbent surfaces;
• applying primer.

Whether you prime before or after assembly depends on the material, finish and kit instructions.

A useful rule

Prepare a surface before assembly if the assembled structure will make that surface awkward to reach.

But avoid heavy paint build-up on:

• tabs;
• slots;
• tongue-and-groove joints;
• tight-fitting edges;
• areas that require a wood-to-wood adhesive bond.

Several coats of paint on a precision joint can change its fit.

Some components are much easier to paint while lying flat.

Common examples include:

• window frames;
• shutters;
• doors;
• railings;
• spindles;
• exterior trim;
• roof or tower interiors;
• hard-to-reach ceiling pieces;
• exposed beams.

However, there is a difference between pre-finishing a component and decorating an entire room before assembly.

Painting a window frame on the workbench can save considerable time.

Wallpapering every wall panel before the shell has been test-fitted may create alignment problems, damaged edges or visible corner gaps on some kits.

Use selective pre-finishing rather than assuming that everything is easier before assembly.

For many kits, the main shell needs to be assembled before final wallpaper and flooring.

Why?

Because assembly establishes:

• final room dimensions;
• wall angles;
• floor levels;
• corner joints;
• actual positions of partitions.

Wallpaper fitted to separate panels may not meet perfectly at corners after the structure is pulled square.

Flooring cut before final assembly may also end up too small, too large or misaligned.

This is why the kit instructions remain important.

A useful compromise is:

1. dry-fit;
2. prepare surfaces;
3. pre-finish inaccessible areas;
4. assemble the required shell;
5. then complete visible wall and floor finishes.

Where wiring will be concealed by interior finishes, install it before those finishes cover the route.

For tape-wire systems, this can mean wiring walls and floors before wallpaper, paint finish layers or flooring are completed.

For round-wire systems, channels or holes may need to be prepared during construction.

Test as you go

Do not install an entire electrical system and test it only at the end.

A more reliable approach is:

1. install a section;
2. test it;
3. add the next section;
4. test again;
5. record the route;
6. only cover the system once it is working.

Photographing the finished wiring before wallpaper or flooring goes on can be extremely useful later.

Include a ruler or known reference point in some photographs so you can locate concealed runs again.

If a ceiling is to be painted or papered, completing it before the final wall finish is often easier.

It reduces the risk of:

• dripping ceiling paint onto new wallpaper;
• damaging finished walls while working overhead;
• awkward trimming at the wall/ceiling junction.

This is a practical sequence rather than an absolute rule.

If your kit requires a ceiling panel to be installed later, follow the construction sequence.

Wallpaper is generally easier to apply to an uninterrupted wall.

Interior window trim, door architraves, skirting and cornices can obstruct the edges and create unnecessary cutting.

A common sequence is therefore:

1. complete concealed wiring;
2. prepare the wall;
3. paint, paper, tile or panel it;
4. fit the decorative trim afterwards.

Trim then covers the edges of the wall finish and creates a cleaner result.

But what about windows and doors?

This depends on the kit.

The structural part of a window or door may need to be fitted earlier, while the interior decorative trim is delayed until after wallpapering.

Read the kit instructions and distinguish between the component required to build the shell and the finishing trim applied around it.

Both sequences can work.

For many projects, walls are finished before the final floor is installed because:

• wallpaper paste and trimming are less likely to damage the finished floor;
• the floor can cover the lower wallpaper edge;
• skirting can then cover the junction between wall and floor.

A practical sequence is:

ceiling → wall finish → flooring → skirting/baseboard

But there are exceptions.

For example:

• fitted floorboards may need to be installed earlier;
• floor wiring may dictate the sequence;
• a removable floor panel may be decorated off the house;
• tiles that run beneath fixed kitchen furniture may be installed at a different stage.

Think in terms of what must pass behind or beneath something else.

If you are fitting wood flooring, tiles, carpet or another floor finish, install it before the skirting/baseboards in most rooms.

The skirting can then:

• cover the wall/floor joint;
• conceal a small expansion or cutting gap;
• produce a cleaner finished edge.

Installing skirting first means the flooring must be cut precisely against it, which is usually harder.

Again, follow the kit instructions where a particular trim has a structural role.

Stairs are one of the most common components to install too early.

A staircase can make it difficult to:

• wallpaper behind it;
• fit flooring around the stair opening;
• paint the wall beside it;
• reach the underside;
• install skirting.

If the kit permits it, dry-fit the stairs during construction but delay permanent installation until the relevant wall and floor finishes are complete.

Some manufacturers explicitly use this approach.

Do not automatically delay stairs if they are structurally required by your particular kit.

Typical interior finishing components include:

• skirting/baseboards;
• cornices/crown moulding;
• door architraves;
• window trim;
• dado rails;
• ceiling roses;
• decorative mouldings.

These normally make sense after the wall and floor finishes they border.

For example:

• wallpaper first, then door/window trim;
• floor first, then skirting;
• ceiling/wall finishes first, then cornice.

Paint or stain the trim before installation if that produces a cleaner result, then touch up cut ends afterwards.

Plan their positions before wiring.

Install the hidden electrical infrastructure early.

Fit the visible light fittings later, once major decorating work is complete.

That reduces the chance of:

• covering fixtures with paint;
• damaging delicate shades;
• catching wires during wallpapering;
• knocking fittings while flooring or trim is being installed.

Before final installation, test the wiring once more.

Then test each fitting after connection.

Treat fixed-looking interior furniture as part of the finishing plan rather than the first decorating stage.

Before installation, ask:

• does wallpaper continue behind it?
• does flooring continue beneath it?
• does wiring need to pass behind it?
• will fitting it block access to a corner?
• does skirting run behind it or stop against it?

There is no universal answer.

A kitchen unit might sit on top of a finished floor in one project, while another builder may deliberately floor only the visible area.

The key is to decide the construction detail before gluing the unit into place.

Furniture and accessories should be among the final stages.

Complete jobs that create:

• sanding dust;
• sawdust;
• adhesive residue;
• paint splashes;
• wallpaper paste;
• plaster or filler dust

before filling the rooms with finished miniatures.

This protects delicate textiles, mirrors, acrylic surfaces and painted furniture.

A useful room sequence is:

1. major furniture;
2. rugs;
3. curtains and bedding;
4. lighting accessories;
5. plants and decorative objects;
6. wall art and mirrors;
7. smallest finishing details.

For a typical kit, use this as a planning checklist and adapt it to the manufacturer instructions.

Stage A — Plan

• ☐ Read all kit instructions
• ☐ Inventory and photograph parts
• ☐ Decide room uses
• ☐ Choose lighting type
• ☐ Choose wall, ceiling and floor finishes
• ☐ Mark likely furniture and fixture positions

Stage B — Test

• ☐ Dry-fit shell
• ☐ Dry-fit partitions
• ☐ Test stairs
• ☐ Test doors/windows
• ☐ Identify inaccessible areas
• ☐ Mark wiring routes and light positions

Stage C — Prepare

• ☐ Sand where required
• ☐ Seal/prime surfaces as appropriate
• ☐ Pre-paint difficult trim/components
• ☐ Pre-finish surfaces that will become inaccessible
• ☐ Keep joints free from excessive paint build-up

Stage D — Build and wire

• ☐ Complete structural assembly stages required by the kit
• ☐ Install concealed wiring
• ☐ Test each electrical section
• ☐ Photograph and record wiring routes
• ☐ Correct faults before covering anything

Stage E — Decorate

• ☐ Finish ceilings
• ☐ Paint/wallpaper/panel walls
• ☐ Install flooring
• ☐ Fit stairs when appropriate
• ☐ Fit interior door/window trim
• ☐ Fit skirting/baseboards
• ☐ Fit cornice/crown moulding
• ☐ Complete touch-ups

Stage F — Finish

• ☐ Install and test light fittings
• ☐ Install fixed interior elements
• ☐ Clean construction dust
• ☐ Add furniture
• ☐ Add soft furnishings
• ☐ Add wall décor
• ☐ Add accessories and final styling

Renovating an assembled house is a different problem.

You cannot simply follow a new-kit sequence because access has already been restricted.

A practical renovation order is:

1. photograph the house before work begins;
2. remove loose furniture and accessories;
3. identify anything historically or sentimentally important before stripping;
4. test the existing electrical system if present;
5. remove loose or failed finishes carefully;
6. make structural repairs;
7. plan replacement wiring;
8. repair and prepare surfaces;
9. install/test concealed wiring;
10. finish ceilings;
11. decorate walls;
12. replace flooring;
13. refit or replace trim;
14. install/test lighting;
15. clean thoroughly;
16. furnish and style.

If the house is antique, historically significant or valuable, decorative renovation and conservation are not the same thing. Avoid irreversible stripping until you understand what you have.

A dedicated restoration guide should be used for older or potentially important houses.

It is still possible to add lighting, but your options may change.

Depending on the house and system, you might consider:

• battery lights;
• surface-mounted wiring designed to be disguised;
• wiring from an adjacent room or exterior surface;
• removing and replacing selected wallpaper;
• routing from beneath a floor or above a ceiling.

Do not start cutting channels through an already-decorated house until you understand the electrical system and construction.

A future dedicated guide will cover planning dolls house wiring before decorating and the trade-offs between wired and battery lighting.

Gluing before dry-fitting

A small alignment problem becomes a structural problem once the adhesive cures.

Wallpapering before deciding on concealed wiring

The new wall finish may need to be disturbed to install the electrical system.

Covering wiring before testing it

Fault finding becomes significantly harder once wallpaper and flooring hide the route.

Installing stairs too early

They can block access to walls, floors and trim.

Installing trim before wallpaper

This creates unnecessary cutting and can leave rough visible edges.

Installing skirting before flooring

The finished floor then has to be cut precisely around the skirting instead of slipping neatly beneath it.

Painting precision joints too heavily

Several coats of paint can stop tabs and slots fitting correctly.

Decorating every panel before assembling the shell

On some kits this can produce visible gaps or damaged finishes when the structure is squared.

Installing delicate light fittings during heavy construction

They are easily knocked or contaminated by paint, glue and dust.

Failing to record hidden wiring

Months or years later, you may not remember where the circuit runs.

Throwing away material samples

Keep labelled scraps of wallpaper, flooring and paint references. They are invaluable for future repairs.

When you are unsure which job comes first, ask four questions:

1. Will the next stage hide this?

If yes, complete and test it now.

Typical example: wiring before wallpaper.

2. Will the next stage block access?

If yes, delay the obstructing component.

Typical example: stairs before decorating the stairwell.

3. Is this component meant to cover the edge of another finish?

If yes, fit the finish first.

Typical example: flooring before skirting.

4. Is this structural?

If yes, follow the kit manufacturer rather than a generic decorating rule.

That four-question test resolves many sequencing decisions.

Imagine you are building a 1:12 bedroom with:

• one ceiling light;
• wallpaper;
• wood-effect flooring;
• a staircase passing the room;
• skirting;
• a bed, wardrobe and mirror.

A sensible order might be:

1. dry-fit the room and stairs;
2. decide the bed and wardrobe positions;
3. mark the ceiling-light position;
4. prepare and prime surfaces;
5. assemble the required shell;
6. install and test wiring;
7. finish the ceiling;
8. wallpaper the walls;
9. install the flooring;
10. permanently fit the stairs;
11. fit skirting and interior trim;
12. install and test the ceiling light;
13. clean the room;
14. add the bed and wardrobe;
15. add bedding;
16. position and fix the mirror;
17. add final accessories.

The exact order might change with another kit, but the dependencies remain logical.

A simple project notebook or digital folder can save considerable frustration.

Record:

• kit name and manufacturer;
• scale;
• paint colours and codes;
• wallpaper name/batch;
• flooring source;
• adhesives used;
• wiring layout;
• transformer/power-supply details;
• photographs before surfaces are covered;
• modifications made to the kit;
• dates of major stages.

For a large or long-term project, this becomes a maintenance record as well as a build diary.

Plan first. Hide infrastructure before finishes. Fit finishes before the trim that covers their edges. Delay anything that blocks access.

And above all:

follow the structural sequence of your particular kit.

A good dolls house build is not about doing every job as early as possible. It is about doing each job before another job makes it harder.

Related guides

• What Is 1:12 Scale? Dolls House Scale Guide
• How to Measure Your Dolls House Before Buying Furniture
• How to Choose 1:12 Dolls House Furniture for Every Room

Planned companion guides

• Dolls House Lighting Explained: Wired vs Battery Lights
• How to Plan Dolls House Wiring Before Decorating
• How to Wallpaper a Dolls House
• Dolls House Flooring Guide
• Essential Tools for Dolls House Building & Decorating
• Best Adhesives for Dolls House Miniatures
• How to Restore or Renovate an Old Dolls House