TW1 · TW2 · Strawberry Hill · St Margarets · Q2 2026
Cost of New Windows in Twickenham 2026
Twickenham window prices by type
Fitted prices for windows across Twickenham (TW1, TW2) as of Q2 2026, including VAT, frame, glazing, fitting, disposal of old frames and FENSA self-certification. Prices reflect a typical 5-10% Twickenham access premium over central London — driven by tighter scaffolding access on Victorian terraces and a higher proportion of conservation properties. These are real ranges we quote weekly.
| Window type | System | Low | High |
|---|---|---|---|
| uPVC | |||
| Casement window | Deceuninck 2500 | £600 | £1,300 |
| Flush casement | Deceuninck Heritage | £700 | £1,500 |
| Tilt & turn | Deceuninck T&T | £750 | £1,600 |
| French casement | Deceuninck 2500 | £800 | £1,700 |
| Bay / bow window | Deceuninck 2500 | £1,900 | £4,800 |
| Heritage sash (run-through horns) | APX Heritage | £1,300 | £2,500 |
| Aluminium | |||
| Casement window | APX / Smart Alitherm | £950 | £1,900 |
| Flush casement | APX Flush | £1,150 | £2,100 |
| Picture (fixed) window | APX Picture | £1,250 | £2,600 |
| Schüco AWS 70.HI | Schüco AWS 70.HI | £1,500 | £2,500 |
| Heritage Aluspace (steel-look) | Smart Aluspace | £1,500 | £3,200+ |
| Timber | |||
| Timber softwood sash | Engineered redwood | £1,900 | £4,000 |
| Timber hardwood sash | Sapele / oak | £2,600 | £4,700 |
| Slim retrofit (existing frame) | Slimlite Histoglass | £950 | £1,500 |
Whole-property estimates for Twickenham
Realistic fitted budgets for typical Twickenham property types in 2026. Counts include front, rear, side and bay windows. Period properties on conservation streets sit toward the upper bounds.
| Property | Windows | uPVC | Aluminium / Heritage |
|---|---|---|---|
| 1-bed flat / conversion | 4–5 | £3,200–£6,000 | £5,000–£10,000 |
| 2-bed Victorian terrace | 8–10 | £5,500–£12,000 | £8,500–£18,000 |
| 3-bed semi (1930s / Edwardian) | 10–13 | £8,000–£18,000 | £13,000–£28,000 |
| 4-bed Victorian terrace (heritage uPVC) | 14–16 | £15,000–£30,000 | £22,000–£40,000 |
| Period-correct timber sash terrace | 14–18 | £20,000–£45,000 | — (timber spec) |
| Large detached / Strawberry Hill villa | 18–25 | £18,000–£40,000 | £28,000–£60,000+ |
Strawberry Hill, conservation and Richmond Council
Twickenham sits within the London Borough of Richmond upon Thames. Window installations across TW1 and TW2 fall under Richmond Council planning control, with several layers of heritage protection to consider:
| Area | Designation | Window controls |
|---|---|---|
| Strawberry Hill (TW1) | Conservation area, Article 4, Grade I listed Strawberry Hill House | Timber sash on front elevations; LBC for listed; uPVC heritage sometimes approved at rear |
| Twickenham Riverside (TW1) | Conservation area | Timber preferred on Georgian/Victorian frontages; period-correct profiles required |
| St Margarets (TW1) | Mixed conservation pockets | Heritage uPVC often approved with run-through horns and astragal bars |
| East Twickenham (TW1) | Mixed, some conservation streets | Standard uPVC and aluminium typically approved |
| Whitton (TW2) | Mostly non-conservation 1930s stock | Standard uPVC, aluminium, heritage all approved |
| Twickenham Green (TW1) | Conservation area | Heritage profiles required, period-correct sightlines |
Twickenham's Victorian terrace stock
Twickenham's housing breaks roughly into four periods, each with its own window character and replacement considerations:
Georgian / early Victorian (pre-1850)
Sparse — concentrated around Strawberry Hill, Twickenham Green and Riverside. Six-over-six and eight-over-eight timber sash with crown glass, run-through horns. Almost always listed or in conservation. Timber-only with LBC.
Mid-late Victorian (1850–1900)
The dominant stock across TW1 and TW2. Two-over-two and one-over-one timber sash with deep horns and bays. uPVC heritage often approved on rear; timber required on conservation front elevations.
Edwardian / 1900s (1900–1920)
Common around Whitton and East Twickenham. Bay-fronted terraces and semis with leaded lights and stained glass. Slim retrofit double glazing or full replacement with leaded sash both common.
Inter-war (1920s–1940s)
Whitton TW2 1930s semis and Tudor-style detached. Steel Crittall windows often original — replace with Smart Aluspace heritage aluminium for steel-look match. Standard uPVC approved on side and rear.
Post-war & modern (1950+)
Pockets across TW2, Hampton fringe. Standard casement and tilt-turn glazing. uPVC and aluminium both work. No heritage constraints typically.
New build / extensions (2000+)
Rear extensions to Victorian terraces are now the dominant project type. Bifold or sliding patio doors plus aluminium picture and corner windows — coordinated with structural openings.
What drives the Twickenham premium
Twickenham installations typically run 5-10% above equivalent central London quotes. Three drivers explain it:
1. Scaffolding access +5%
Victorian terraces with shared side returns and narrow rear access need tower scaffolding more often. Mansard extensions on TW1 streets need full scaffold for first-floor sash work.
2. Conservation profiles +10–25%
Strawberry Hill, Twickenham Green and Riverside need period-correct profiles. Heritage uPVC sash with run-through horns and astragals costs 30-50% more than standard casement; timber sash costs 50-100% more.
3. Planning & LBC lead time +£240–£900
Richmond Council planning fees from £240. LBC for listed properties adds drawings (£400-£800) and 8-12 week lead time. We handle pre-app, drawings and submission as part of the survey.
Frequently asked about Twickenham window cost
How much do new windows cost in Twickenham in 2026?
Fitted per-window prices in Twickenham TW1 and TW2 in 2026: uPVC casement £600–£1,300; uPVC heritage sash £1,300–£2,500; aluminium casement £950–£1,900; timber softwood sash £1,900–£4,000. Twickenham's terraced housing stock typically carries a 5-10% access premium over central London due to scaffolding and rear-elevation constraints. A whole 3-bed semi runs £8,000–£18,000.
How much does a 4-bed Victorian terrace cost to re-window in Twickenham?
A typical 4-bed Victorian terrace in Twickenham TW1/TW2 with 15 windows costs £15,000–£30,000 in uPVC heritage with run-through horns, or £20,000–£45,000 for period-correct timber sash with weights and pulleys. The wide range reflects whether the property is in Strawberry Hill conservation area (LBC for listed, often timber-only on front elevation) or non-conservation streets where uPVC heritage is approved.
Do windows in Strawberry Hill need planning permission?
Strawberry Hill (TW1) is a Richmond Council conservation area with strict heritage controls around Strawberry Hill House (Grade I listed, Horace Walpole's Gothic Revival villa, 1749). Listed Building Consent (LBC) is required for any external alteration to listed properties. Article 4 directions on Strawberry Hill streets typically require timber sash on front elevations matching original profiles. Apex Glazing handles pre-application enquiries and LBC drawings as part of survey.
Why is Twickenham more expensive than central London for window installation?
Twickenham typically carries a 5-10% premium over equivalent central London installations because of three factors: tighter access for scaffolding on Victorian terraces with shared side returns; longer travel time for installation teams; and a higher proportion of conservation/heritage properties requiring period-correct profiles and longer planning timelines.
What's the typical Twickenham property window count?
Twickenham property stock breaks down roughly: 1-bed flats and conversions 4-5 windows; 2-bed Victorian terraces 8-10; 3-bed semis (1930s and Edwardian) 10-13; 4-bed Victorian terraces 14-16; large detached (Strawberry Hill, riverside) 18-25. Bay windows are common on 1900s terraces — count each bay as 3-4 windows for budgeting.
Are uPVC windows allowed in Twickenham?
Standard uPVC casement is allowed across most of Twickenham (TW1, TW2). Conservation areas (Strawberry Hill, parts of Twickenham Riverside) typically require uPVC heritage profiles with run-through horns and astragal bars, or full timber on listed buildings. Article 4 directions on individual streets may require timber-only — always check with Richmond Council planning before ordering.
How long does a window install take in Twickenham?
Per-window install time in Twickenham: 60-90 minutes for a standard ground-floor casement; 90-120 minutes for first-floor with scaffolding; 2-4 hours for sash refurbishment or slim retrofit; full day for bay window. Whole-property timeline: 2-bed terrace 2-3 days; 3-bed semi 3-5 days; 4-bed Victorian terrace with sash 5-8 days; conservation/listed projects 1-2 weeks plus 8-12 week LBC lead time.
Does Apex Glazing cover all of Twickenham?
Yes. Apex Glazing covers TW1 (Twickenham, Strawberry Hill, St Margarets), TW2 (Whitton, East Twickenham, Hampton Wick boundary), and the surrounding Richmond, Hampton, Teddington and Kingston postcodes (TW3-TW12, KT1-KT2). We've completed installations across the area for 20+ years — survey is free, no-obligation, with fixed quotes within 48 hours.
Are sash windows worth restoring in Twickenham?
For Victorian and Edwardian properties in Twickenham — yes, almost always. Original sash frames in good condition can be refurbished and slim-retrofitted with double glazing for £1,200-£2,200 per window vs £1,800-£3,800 for full timber replacement. Restoration preserves the original detail and adds resale value, particularly in Strawberry Hill and Riverside conservation areas. Survey identifies whether timber is salvageable.
