Door Installation Costs UK — Front Door, Internal and Bifold Pricing Guide (2026)

Doors are one of the highest-value jobs a joiner or window company can win — customers want the work done once and done properly, and the ticket size is significant enough to justify proper marketing spend. Whether you're fitting a composite front door in a suburban semi or a run of aluminium bifolds on a rear extension, the numbers vary considerably. This guide covers real supply-and-fit costs for 2026, the compliance requirements that trip up unaware installers, and how to structure your quotes so customers say yes.

Why Customers Replace Doors

Understanding customer motivation shapes how you sell. The most common reasons homeowners replace doors in 2026:

• Security: Older single-point locks and thin frames are a liability. Insurance premiums increasingly reward PAS 24-certified doors, and customers who've been burgled or who are remortgaging often want documentary proof of security upgrades.
• Draught and energy loss: A poorly-fitted or ageing front door with a worn seal can cost hundreds of pounds a year in heat loss. With energy prices still elevated, the payback argument for a new thermally broken door is easy to make.
• Aesthetics and kerb appeal: Extensions, refurbishments and property sales all drive door replacement. A tatty front door undermines a freshly rendered facade or a new kitchen extension.
• Planning improvements: Rear extensions almost always require new external doors — either bifolds, sliding patio doors or a wider single or double door. Planning conditions sometimes specify materials or configurations, particularly on listed buildings or in conservation areas.
• Compliance: Landlords upgrading HMOs, houses in multiple occupation, commercial tenancies and rental properties frequently need fire doors installed or upgraded to meet current regulations.

Front Door Replacement Costs (Supply and Fit)

These are typical 2026 supply-and-fit prices for a standard UK front door opening, including removal and disposal of the old door, new frame if required, and all ironmongery. Prices assume a straightforward opening with no structural work.

The upper end of composite door costs typically includes bespoke colours, glazed side panels, sidelights, or a more premium brand. Aluminium front doors at the top of the range are often architecturally specified with flush thresholds, multipoint locks and integrated smart access. Steel security doors at £5,000+ usually include tested locking systems with Secured by Design certification.

Internal Door Costs (Supply and Fit)

Internal doors are often sold as a full-house package — particularly when a client is renovating throughout. Pricing internal doors per unit is straightforward, but the real margin is in quoting a whole set with matching ironmongery.

A set of six solid core doors with matching lever handles, hinges and latches in a mid-range spec sits at around £1,200–£1,800 all in for a standard 3-bed house — a competitive, clearly scoped number that helps customers compare quotes fairly. Fitting-only rates (customer supplies the doors) run at roughly £60–£120 per door for a joiner, depending on whether the linings are being reused or replaced.

Bifold and Sliding Door Costs

Bifold and large sliding doors are one of the fastest-growing segments in residential improvement. Rear extension projects in particular almost always include either bifolds or a sliding patio door as the main glazed opening. Prices scale significantly with width.

Larger aluminium bifold systems from premium brands such as Origin, Kloeber or Schuco can push well beyond £15,000 for wide spans with flush threshold details and integral blinds. Always confirm the structural opening size and lintel specification before quoting — an undersized lintel on a wide bifold is a costly retrofit.

Fire Doors: FD30 and FD60

Fire doors are a legal requirement in certain residential and commercial settings, and the compliance landscape has tightened significantly since the Building Safety Act 2022. Getting this wrong exposes both installer and client to serious liability.

• FD30 — provides 30 minutes of fire resistance; the standard for most domestic applications, required on doors opening onto escape routes in houses of multiple occupation and on integral garage doors.
• FD60 — 60 minutes of fire resistance; required in higher-risk residential and commercial buildings, stairwells in taller buildings and commercial premises.
• Intumescent strips — must be fitted to all fire doors; these expand under heat to seal the gap between door and frame. Cold smoke seals are also required in most applications.
• Self-closing mechanisms — all fire doors must be fitted with a closer that returns the door to the closed position automatically. Overhead closers and concealed cam-action hinges are both acceptable.
• CE marking / UKCA marking — fire doors must be tested and certified to BS EN 1634-1 and carry appropriate marking. Installing an uncertified door in a fire door position is non-compliant.

Supply and fit cost for a compliant fire door: £300 – £700 per door depending on specification. Acoustic-rated fire doors and those with vision panels cost more. HMO landlords requiring multiple fire doors are a strong recurring revenue opportunity — build a service package around annual fire door inspections to increase customer lifetime value.

FENSA, CERTASS and Building Regulations

Two compliance frameworks apply to external door installations and both matter to customers more than many installers realise — especially when the property is sold or remortgaged.

FENSA and CERTASS are competent person schemes that allow registered installers to self-certify replacement windows and external doors without a local authority Building Control inspection. FENSA or CERTASS certification is required when you are replacing an external door and its frame — a like-for-like door replacement into an existing frame in perfect condition does not require a certificate, but any new frame does. Solicitors increasingly request FENSA certificates on conveyancing — clients without one may need a local authority regularisation certificate, which costs time and money.

PAS 24 is the security standard (Enhanced security performance requirements for doorsets and windows in the UK) and is mandated under Approved Document Q of the Building Regulations for all new external doors in England and Wales. This covers new-build and replacement external doors where the frame is being replaced. PAS 24 doors must have multi-point locking, reinforced frames and glazing that meets attack resistance requirements. Any door you supply for an external opening in England or Wales should be PAS 24 certified — ask your supplier for the product declaration and keep it on file.

Ironmongery Costs

Ironmongery is a meaningful add-on to any door job and the margin is good if you supply rather than letting the customer buy their own. Typical costs for quality fittings:

For a full set of six internal doors, a mid-range ironmongery pack — lever handles, hinges and latches in a brushed nickel or satin chrome — adds around £300–£600 to the job. It's worth offering two or three ironmongery options (good, better, best) within your quote rather than a single line item, as customers frequently upgrade when given a visual choice.

Joiner Fitting Rates and Day Rates

Whether you're quoting supply-and-fit or fitting-only, understanding the labour component helps you price competitively without underselling.

• Day rate: £200 – £350 per day for a qualified joiner, depending on region and specialism. London and the South East sit at the top end; the Midlands and North tend toward the lower range.
• Output rate: 1 – 2 internal doors per day for a joiner, including hanging, fitting ironmongery and trimming architrave. External doors and bifold systems take longer — a full bifold installation is typically a full day for two fitters.
• Supply-and-fit vs fit-only: Supply-and-fit gives you margin on materials and complete control over product quality. Fit-only (customer-supplied door) removes material risk but also removes material margin — price accordingly and make clear that warranty covers fitting only, not the door itself.

Garage Door Costs

Garage doors are a natural add-on for joiners and window companies already doing front door or driveway-facing work. Supply-and-fit costs for the main types:

Automation is increasingly expected by customers replacing a garage door — price it as a default option in your quote and let customers opt down, rather than presenting it as an add-on they have to ask for. Most customers take it when it's presented as standard.

How to Quote Door Jobs Properly

A professional door quote does three things: it protects you legally, it gives the customer confidence, and it closes faster because the customer knows exactly what they're getting. Key elements:

• Site measure: Never quote a door job from a photograph or a customer's measurements. A site visit to measure the opening, check the reveal depth, assess the frame condition and confirm access takes 20 minutes and saves you expensive problems on install day.
• Frame condition survey: On replacement external doors, always note the condition of the existing frame. If you're reusing the frame, document it in the quote. If the frame is rotten, bowed or undersized for PAS 24 compliance, specify a new frame and price accordingly — do not absorb the cost on site.
• Written specification: Include the door manufacturer, model, colour, hardware specification and any certifications (PAS 24, FD30, FENSA). A quote that says "composite front door, black" leaves room for disputes. A quote that names the product and specification does not.
• Supply-and-fit vs fit-only stated clearly: Make the scope explicit. Include who is responsible for removal and disposal of the old door, making good around the frame, and providing any decoration.
• FENSA/CERTASS confirmation: If the job requires a certificate, confirm it in the quote. If the customer is fitting their own frame and you're only hanging the door, clarify that no certificate is being issued and why.

Red Flags to Watch For

When reviewing competitor quotes or answering customer questions, these are the warning signs of a non-compliant or underspecified installation:

• No PAS 24 documentation: Any installer fitting a new external door in England or Wales without being able to provide PAS 24 product certification is not meeting Building Regulations. If your competitor's quote doesn't mention it, that's a legitimate point of differentiation for your quote.
• No FENSA certificate offered for frame replacement: A customer replacing a front door and frame who is not offered a FENSA or CERTASS certificate will face problems when they sell the property. This is a real cost and risk that lower-priced competitors often ignore.
• No written specification: A one-line quote with a total price and no product details gives the installer room to substitute materials. Customers who have been caught out by this are very receptive to detailed written specifications from reputable installers.
• Fire door installation without certification: Installing a fire door in a required position (e.g. integral garage to house, HMO escape route) without CE/UKCA-marked product and correct intumescent seals is a safety and legal risk. Always confirm fire door certification before accepting the job.

How Trade2Base Helps Door and Window Companies

For joiners and window companies, the marketing mix is broad — Checkatrade, Google Ads, local directories, van signage, referrals, social media. The problem is knowing which of those actually converts into fitted jobs. It's common to be spending £400 a month on a directory that generates enquiries but rarely orders, while a modest Google Ads budget is producing the best margin jobs in the business.

Trade2Base tracks every enquiry from first contact through to closed order. When a customer calls from a Google Ad, fills in your website form from a referral, or messages on WhatsApp after seeing your van, Trade2Base captures the source and links it to the quote and the won job. Over time, you see clearly which marketing channels are generating revenue — not just leads, but actual fitted door orders — and which are generating noise.

For a door and window business spending £1,000–£3,000 a month on marketing, that clarity typically identifies one channel to cut and one to scale — which more than covers the cost of the software. The dashboard shows cost per lead, cost per order and revenue by source, so you can make decisions with numbers rather than gut feel.