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Burntwood LaneEarlsfield SW18 · Rear extension
On site nowElms Crescent, Clapham SW4 — week 19 of 26
Selected projects
Every project listed with the floor area we added and the weeks we were on site.
Featured
“Wandle opened up the whole back of our house and it feels twice the size. Same team every day, and they left the street cleaner than they found it.”
“Planning was the part we dreaded. They handled every meeting and every drawing — we never had to chase once.”
“Fourteen weeks, exactly as promised, and the fixed price stayed fixed. We have already recommended them to three neighbours.”
Services — 06
Open-plan kitchen and living space that opens onto the garden. We handle the structural design, glazing and fit-out.
The narrow passage beside a Victorian terrace, filled in to turn a galley kitchen into a proper family room — the most common first project on a London terrace.
Dormer, hip-to-gable and mansard lofts that add a bedroom and bathroom, with a stair designed to feel like part of the original house.
Kitchens and bathrooms rebuilt from the joists up — new services, a better layout and joinery made to fit, without touching the rest of the house.
Every room in one programme while you live elsewhere — rewired, replumbed, insulated and restored, with the period details put back.
Replacement houses and infill plots, from the planning application through to handing over the keys with a ten-year structural warranty.
How it works
A typical rear extension, from the first visit to handover. Around 44 weeks in total, 26 of them on site.
Wk 01 · 1 wk
We visit, measure up and talk through what you want and roughly what it costs.
Wk 02–07 · 6 wks
Our architect draws up options, then a final scheme with 3D views.
Wk 08–15 · 8 wks
We submit planning or permitted development, and handle party walls and building control.
Wk 16–17 · 2 wks
An itemised, fixed quote and a week-by-week programme.
Wk 18–43 · 26 wks
One project manager, one team, weekly updates with photos.
Wk 44 · 1 wk
Final walk-round, snag list closed, certificates and guarantee.
Where we build
We keep to south west London so the site manager is never more than a short drive away — and so we know every borough's planning officers by name.
Start a project
We visit every home before we quote. Leave a few details and a project lead will call within two working days to book a free site survey.
About
Wandle started in 2009 with one van, one carpenter and a yard off Garratt Lane. Seventeen years later we are thirty-eight people — architects, engineers and our own site teams — and we still only build in south west London.
We named the business after the river that runs from Croydon to Wandsworth, through almost every postcode we work in. Most of our clients live within a few streets of a house we have already built, and most of our work comes from neighbours who have watched us on site.
Keeping design, engineering and building under one roof means one contract, one programme and one person accountable from the first measured survey to the day we hand back the keys.
One contract
Architecture, engineering and construction under one roof, with a fixed price agreed before we start.
Our own people
The carpenters, bricklayers and site managers on your job work for us — the same faces every day.
Neighbours first
Party walls agreed early, letters to the street before we start, and a site swept every evening.
The people who will design, engineer and build your project.
Founder & Director
Started Wandle from a single van in Earlsfield. Still walks every site on a Friday.
Design Director
Leads the in-house architecture team, from first sketch to planning drawings.
Structural Engineer
Designs every steel, basement and loft structure we build.
Head of Projects
Owns the programme on every job and chairs the weekly client update.
Senior Site Manager
Twenty years on London terraces. The person you will see most on site.
Client Services
Your first call, and the person who books your free site survey.
“Wandle opened up the whole back of our house and it feels twice the size. Same team every day, and they left the street cleaner than they found it.”
“Planning was the part we dreaded. They handled every meeting and every drawing — we never had to chase once.”
“Fourteen weeks, exactly as promised, and the fixed price stayed fixed. We have already recommended them to three neighbours.”
Wandle Yard · Client login
See progress, make decisions and approve extras for your project. No password to remember — we'll send a sign-in link to your phone or email.
We've sent a sign-in link by WhatsApp. It works once and expires in 15 minutes.
Demo site — no message was actually sent.
Tuesday 13 October · Week 19 of 26 on site
Your extension is on programme. Screed is curing and the glazing goes in next week. Two things need you this week.
How you'll hear from us
Updates come to you on WhatsApp. This portal keeps the full record, and every button opens the right page already signed in. Try it on the phone.
26 weeks on site, Mon 8 June to Fri 4 December 2026. Updated by Dan every Friday.
Choices that keep your build on programme. We order as soon as you confirm.
Electricians first-fix the ceiling on 22 Oct. Confirm three pendants at 750 mm centres, as on drawing E-04.
Nothing extra is built until you approve it here.
Screed is down across the whole extension and curing well, so please no foot traffic until Wednesday. The plasterers finished the kitchen walls on Thursday and the steel was signed off by building control.
Next week the sliding door frame arrives on Tuesday, ready for glazing w/c 19 Oct. One thing from you: the splashback tile by Friday, so we can order with the 10-day lead time.
Fixed price, paid in six stages as the work is done.
Everything for your house in one place, for as long as you own it.
Your portal stays open for the 10-year warranty.
Tuesday 13 October · Office
9 of 11 jobs on programme. Heathfield lost two days to rain and Abbeville is waiting on the kitchen supplier. One stage payment is overdue.
Flagged automatically from site logs, the programme and payments.
Site managers and where they are tomorrow.
| Job | Type | Programme | Status | Site manager | Extras | Margin | Next payment | |
|---|---|---|---|---|---|---|---|---|
| 14 Elms CrescentClapham SW4 | Rear extension | wk 19/26 | On track | DODan Okafor | £600 | 21% | £37,28023 Oct | Open as client → |
| 22 Heathfield GdnsWandsworth SW18 | Mansard loft | wk 6/16 | 2 days lost | DODan Okafor | £0 | 18% | £14,10030 Oct | |
| 8 Trinity RoadTooting SW17 | Loft + ensuite | wk 11/14 | On track | DODan Okafor | £1,240 | 23% | £12,90016 Oct | |
| 31 Abbeville RoadClapham SW4 | Kitchen extension | wk 9/18 | Supplier delay | SMSophie Marsh | £2,350 | 17% | £19,8006 Nov | |
| 41 Nightingale LaneBalham SW12 | Side return | wk 14/16 | Payment overdue | SMSophie Marsh | £880 | 22% | £22,400Overdue 6 days | |
| 56 Ellerton RoadEarlsfield SW18 | Rear extension | wk 2/20 | On track | SMSophie Marsh | £0 | 21% | £28,0003 Nov | |
| 9 Ashlone RoadPutney SW15 | Loft conversion | wk 12/12 | Snagging | SMSophie Marsh | £420 | 24% | £9,750At handover | |
| 7 Lavender GardensBattersea SW11 | Whole-house refurb | wk 4/30 | On track | MRMarcus Reid | £0 | 20% | £41,00020 Nov | |
| 19 Ravenna RoadPutney SW15 | Basement | wk 22/44 | On track | MRMarcus Reid | £5,600 | 19% | £58,00027 Oct | |
| 3 Kenilworth AvenueWimbledon SW19 | New build | wk 31/58 | On track | MRMarcus Reid | £3,210 | 16% | £64,00013 Nov | |
| 27 Northcote RoadBattersea SW11 | Kitchen & bath | wk 3/8 | On track | MRMarcus Reid | £0 | 25% | £8,20030 Oct |
Every “Book a site survey” form on the website lands here automatically. Try it from the Contact page.
How updates reach homeowners. Everything is also kept in their portal.
What homeowners see when they open Yard.
Each role decides what someone can see. Site managers only ever see their own jobs.
| Person | Work email | Role | Can see |
|---|---|---|---|
| THTom Hale | [email protected] | Everything, including margins | |
| LBLaura Byrne | [email protected] | All live jobs and enquiries | |
| DODan Okafor | [email protected] | Only their own jobs | |
| SMSophie Marsh | [email protected] | Only their own jobs | |
| MRMarcus Reid | [email protected] | Only their own jobs | |
| EWElla Ward | [email protected] | Enquiries and client messages |
Needs you · Fri 9 Oct
Friday update
Your live jobs · 3
Tomorrow
14 Elms Crescent · Priya & Sam
Replies reach the client on WhatsApp as “Dan Okafor · Site manager”.
Daily log · Fri 9 Oct · 14 Elms Crescent
Friday update · week 18 · draft
Built from 4 daily logs, 34 photos and this week's client decisions.
Week 18: screed is down and curing, and building control signed off the steel. 0 days lost, still on track for 4 Dec.
Next week: sliding door frame arrives Tuesday, glazing w/c 19 Oct.
1 decision needed by Fri 16 Oct: kitchen splashback tile (10-day lead time). [Choose tile]
Site manager view · Dan Okafor
Site managers won't fill in forms at 7pm. So Dan logs each day in about two minutes — a few photos and a voice note — and Yard does the rest: it files everything to the right job, answers sit in one shared inbox, and the client's Friday update drafts itself.