How to Decorate a New Build House UK: Complete Guide (2026)
Quick Answer
New build homes should ideally be left 6–12 months before full decoration to allow for initial settlement and plaster drying. However, a mist coat of diluted emulsion can be applied immediately. Professional new build decoration typically costs 10–20% more than standard decorating due to extra preparation required.
Moving into a new build is exciting, but the standard developer's white emulsion rarely does justice to your new home. Decorating a new build comes with specific challenges you won't encounter in an older property — and getting it wrong can be costly. This guide from paint-myroom.com covers everything you need to know about decorating your new build home in the UK.
Why New Builds Are Different to Decorate
New build properties present unique decorating challenges:
- Fresh plaster — new plaster is highly porous and alkaline. Standard emulsion applied directly will soak in unevenly and look patchy.
- Settlement cracks — new builds settle as they dry out. Hairline cracks appearing in corners and around door frames in the first year are completely normal.
- High moisture content — all the water used in construction (concrete, mortar, plaster) slowly evaporates through walls and ceilings for months after completion.
- Developer's white — the standard coating applied by developers is usually a basic mist coat or trade emulsion, not a finished decorating product.
- New wood movement — timber frames, joinery, and floors will move as they dry, potentially causing small gaps at skirtings and architraves.
When Can You Decorate a New Build?
Immediately After Moving In
You can apply a mist coat (50:50 emulsion and water) to newly plastered walls immediately. This is the correct primer for fresh plaster and allows it to breathe while providing a key for subsequent coats. Avoid applying full-strength emulsion directly to bare plaster.
After 6–12 Months
For the full decoration — two full coats of your chosen colour — it's best to wait 6–12 months for the initial settlement phase. This allows most of the initial cracks to appear so they can be filled before final decoration.
What You Can Do Immediately
Apply mist coats throughout, paint ceilings (these move less), fit curtain poles and blinds, lay flooring (after allowing the subfloor to acclimatise), and start on feature walls with specialist products if using breathable paints.
New Build Decorating Costs UK 2026
New build decoration typically costs 10–20% more than standard decorating due to extra preparation:
New Build Full House Decoration Costs (Excl. VAT)
Includes mist coats, filling settlement cracks, and two topcoats throughout in your chosen colours.
💡 Book your new build decoration for 6–12 months after completion for the best results. paint-myroom.com can do your initial mist coat on completion, then return for full decoration.
Best Paints for New Builds
Paint selection is critical in new builds:
- Mist coat: 50:50 mix of any emulsion with water — essential first step on bare plaster
- Breathable emulsion: Allows moisture to continue escaping from walls — important in first year
- Dulux Trade Diamond Matt: Professional-grade, highly durable — ideal for new build walls subject to knocks
- Avoid vinyl silk on fresh plaster — traps moisture and can cause bubbling
- For woodwork: Water-based satin is recommended — easier to apply and remains more flexible as timber settles
Common New Build Decorating Mistakes to Avoid
- Applying full-strength emulsion direct to bare plaster — always mist coat first
- Using vinyl silk on fresh plaster — moisture cannot escape and bubbles form
- Decorating too soon — rushing before settlement leads to having to redecorate cracked areas
- Not ventilating properly — new builds need maximum ventilation for the first year
- Skipping crack filling — small hairline cracks will be visible through paint if not filled
- Choosing gloss for woodwork — oil-based gloss can yellow quickly in new builds; opt for water-based satin
Sequencing Your New Build Decoration
For the best results, follow this order:
- 1. Mist coat all walls and ceilings immediately on move-in (or soon after)
- 2. Install flooring (carpet, hard floors) after mist coat is dry
- 3. Wait 6–12 months for settlement
- 4. Fill all hairline cracks (will have appeared during settlement)
- 5. Lightly sand all filled areas
- 6. Apply two full topcoats in your chosen colours
- 7. Paint all woodwork in your chosen finish
- 8. Touch-up where required after fitters have finished
Frequently Asked Questions
Can I paint a new build straight away?
You can apply a mist coat (diluted emulsion) immediately to fresh plaster. However, full decoration in your chosen colours is best left 6–12 months to allow settlement cracks to appear so they can be filled before final painting.
Why does paint look patchy on new build walls?
Fresh plaster is highly porous and absorbs emulsion unevenly. This is why a mist coat (50:50 emulsion to water) must be applied first. The mist coat seals the plaster evenly and provides a consistent surface for topcoats.
How much does it cost to decorate a new build 3-bed house?
Full decoration of a 3-bed new build (including mist coats, filling, and two topcoats throughout) typically costs £2,500–£3,800 (excl. VAT). This is slightly more than decorating an established property due to the extra preparation required.
What colour should I paint a new build?
New builds often benefit from warm neutral tones that soften the bright white walls and add character. Popular choices include warm whites, soft greiges, and pale stone tones. Bold colours work well as feature walls to add personality without overwhelming the space.
How long do new build cracks take to appear?
Most initial settlement cracks appear within the first 3–12 months. Cracks in corners, above door frames, and where walls meet ceilings are completely normal in new builds and are not structural. Fill these before final decoration.
Flexible ways to pay
A larger decorating project doesn't have to mean one limited way to pay. Get your fixed Paint-MyRoom.com price online and choose from available payment options at checkout, including Klarna and Clearpay.
Subject to eligibility and provider terms.