A replacement front or back door is a new door and frame, usually composite, uPVC or aluminium, made to fit your existing opening and fitted with multi-point locks and weather seals to improve security, warmth and kerb appeal.
We offer a new front or back door across London, and Harrow is one of the places we cover, along with nearby Wealdstone, Brent and Wembley. Before anything is agreed we visit, check the existing structure and talk through your options. You then receive a written quote setting out the full scope; for most homes in London it sits within £1,300–£4,600 including VAT.
- Guide price
- £1,300–£4,600 inc VAT
- Time on site
- Usually half a day to one day per door
- Postcodes
- HA1, HA2, HA3, HA5 and HA7
- Planning rules
- England
- Local area
- Greater London
- Survey
- Free, with a written quote
How much does a new front or back door cost in Harrow?
The costs listed here are typical for a new front or back door around Harrow and include VAT. They reflect labour and material costs in London, about 30% above the national guide, giving a range of £1,300–£4,600. Exact pricing depends on your home, so we only fix it once a free site survey is done.
| Type of job | What it usually involves | Guide in Harrow |
|---|---|---|
| uPVC back door | A standard uPVC back or side door with a half-glazed panel and multi-point lock. | £1,050–£1,950 |
| Composite front door | A made-to-measure composite door in your chosen colour, glass design and hardware. | £1,550–£3,200 |
| Aluminium or door with side panels | A premium aluminium door, or a composite door with one or two side panels. | £3,200–£6,500 |
Your price depends mostly on:
- Door material: uPVC, composite or aluminium
- Side panels, fanlights and the amount of glass
- Colour, including different colours inside and out
- Condition of the opening, threshold and surrounding brickwork
What’s included?
- Measured survey of the opening, threshold and frame condition
- Made-to-measure door and frame in your chosen colour and design
- Glazing panels, side panels or fanlights where specified
- Removal and disposal of the old door and frame
- Weather seals, sealant and internal trims finished neatly
- Building regulations paperwork where a glazed door needs it
Building in Harrow
London's housing is dominated by Victorian and Edwardian terraces, often in yellow London stock brick, with Georgian terraces in central districts and mansion blocks across many inner areas. Outer boroughs have large belts of interwar semis, and there are extensive post-war council estates. Many houses have been split into flats, and conservation areas are widespread.
London Clay shrinks and swells with the seasons, and street trees close to houses can contribute to movement, which affects foundation design.
If your house in Harrow fits one of these patterns, it helps us anticipate what a new front or back door will involve, though we always confirm the details on site.
Permissions for a new front or back door in Harrow
Because Harrow falls under England's rules, the guidance below is the version relevant to you. Before sending a price, we check your property's position with the council.
Replacing windows and doors on a house is usually permitted development in England when the new ones look broadly similar to the old. Flats, listed buildings and homes covered by an Article 4 direction can need consent, and conservation areas may limit materials or styles.
Replacement windows and external doors must meet Building Regulations for energy efficiency, ventilation and, on upper floors, escape. The work is either self-certified by an installer registered with a competent person scheme or signed off by building control.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
What happens after you get in touch?
Survey and measure
We begin by looking at the job in person. During the free survey we discuss options, materials and budget for a new front or back door, and photograph or measure anything the quote needs to reflect.
Quote in writing
The quote arrives in writing, not over the phone. It covers the full scope, the finishes you've chosen, any exclusions and the payment schedule, with a fixed price tied to that specification.
Getting ready
We handle the paperwork side: checking whether planning permission or building control approval is needed, submitting applications where they are, and scheduling the trades and materials around your dates.
Finish and handover
The job proceeds in the order set out in the programme, with dust and debris kept under control. Finally we tidy away, inspect the work together and pass the finished project over to you with its paperwork.
Working with SK Home Improvements
Frequently asked questions
How secure are modern doors?
Modern external doors are far more secure than older designs because they lock at several points along the frame, not just at the handle. We fit anti-snap cylinders, which resist a common method of forced entry, in reinforced frames. Laminated or toughened glass panels add further protection. For extra peace of mind you can add a door chain, a viewer or a smart lock, which we can include in your quote.
How much does a new front door cost?
A new front door costs £1,300–£4,600 supplied and fitted, depending on the material, the amount of glass and whether you want side panels. A uPVC back door sits at the lower end, a composite front door in the middle, and aluminium doors or doors with side panels at the top. Locks, letterplates and dual colours also affect the figure. We confirm a fixed price in writing after measuring your opening.
How long will a new front or back door take?
On a typical home, allow Usually half a day to one day per door. Larger projects, older buildings and extra work found once things are opened up can extend that, while simpler jobs may be shorter. Your quote includes an estimate of time on site, and your point of contact keeps you updated on the programme as the work progresses.
How much will a new front or back door cost in Harrow?
As a guide, expect to pay £1,300–£4,600 including VAT for a new front or back door in Harrow. That range is adjusted for London, which runs about 30% above the national guide. Where your project lands depends on size, materials, access and the condition of what is already there. We confirm a fixed price in writing after a free survey of your home.
How do I look after a composite or uPVC door?
Looking after a composite or uPVC door is mostly a matter of regular cleaning with warm soapy water and a soft cloth. Avoid solvents and abrasive pads, which can dull the finish. Once or twice a year, lightly oil the lock mechanism and the moving parts along the edge of the door, and check the seals. If the door starts to catch, the hinges can usually be adjusted easily.
Also covering areas around Harrow
Homes across HA1, HA2, HA3 and HA5 in Harrow are within our coverage, as are those in Wealdstone, Brent and Wembley. If you are just outside these areas, ask anyway, because we work right across the UK.