The walrus, the lost wood, and a Forest Hill move-out
There is an over-stuffed walrus on a fake ice floe at the top of the hill, and most people who grew up in SE23 have stood in front of it. It came from a Canada exhibition in 1886. The taxidermists had never seen a live walrus, so they filled out every wrinkle and the thing came out far too round. Frederick Horniman, the tea trader, bought it and a roomful of other oddities, and it has been the unofficial mascot of the Horniman Museum ever since. He gave the whole place, building, collections and gardens, to the people of London for free, and free it has stayed. The Townsend building opened on 29 June 1901, and from the lawn by the bandstand you get one of the widest views of London anywhere south of the river.
That is the Forest Hill I write these pages for. It is a place that takes a certain quiet pride in itself, in the museum, in the hill, in the leafy Victorian streets, and people who live here expect things done properly. A move-out clean is a small thing next to a free museum on a hilltop, but the instinct is the same one. You do not hand a place back in a worse state than you took it.
I run the move-out cleans for Monster Cleaning across Forest Hill, and I have done the south-east London rounds long enough to know which of these hill streets a van fits down and which it does not. This page is the long version. It covers the housing you actually rent here, the licensing on the Forest Hill side, how an SE23 check-out gets scored, what our clean covers, the jobs that quietly lose people their deposit, what it costs, and the questions tenants and landlords keep asking. Read the bit you need.
A hill named after a wood that is no longer there
Forest Hill is named after a forest that has mostly gone. The whole ridge here, running from Honor Oak down through Forest Hill and Sydenham towards Norwood and Croydon, was once the Great North Wood, a stretch of natural oak woodland that started a few miles south-east of the City and climbed the high ground. The oak standards went to the Royal Dockyard at Deptford, founded in 1513, to be made into ships; the bark went over to the tanneries at Bermondsey for the leather trade; and the rest was coppiced and burned for charcoal by colliers working conical kilns up in the trees. The biggest piece of that old wood that survives is up the slope at Sydenham Hill Wood, with Dulwich Wood next to it. The “Forest” in Forest Hill is the ghost of all of it.
What that history left behind is the thing a cleaner notices first: the trees, the damp and the gradient. Forest Hill is high and green, the streets climb, and a lot of the lets back onto gardens, allotments and the wooded edge. That brings leaf litter against the patio doors, moss on the north-facing window frames, and more mud walked in off a garden than a flat on a hard street ever sees. None of it is the tenant’s fault. A clerk writes it down anyway.
The water matters too. South-east London runs on hard water, and hard water is the reason limescale is the SE23 deposit-killer it is. It clouds taps, shower screens and kettles, and a clerk reads that cloud as not cleaned even when the metal underneath is perfectly sound. It does not wipe off. It has to be descaled.
The other anchor in Forest Hill is the station, which has been here a long time. It opened on 5 June 1839, first called Dartmouth Arms after the pub by the line, on what was then the London and Croydon Railway. Today it is on the Windrush line of the London Overground, the old East London line, with Southern trains sharing the tracks up to London Bridge a little over five miles away. Plenty of people took their flat for that run into town, and when they leave they tend to leave mid-week, around a job, in a hurry. That shapes how the cleans get booked, which I will come back to.
There is one grand building people always mention, so it is worth being straight about it. The Capitol on London Road is a Grade II-listed former cinema, a proper 1929 super cinema designed by John Stanley Beard with close to 1,700 seats and an Egyptian-styled front. It was an ABC, then a bingo hall, then for two decades a large Wetherspoon pub. That pub closed in October 2023, so if you have moved here recently and wondered why the cathedral-sized place on the high street is shut, that is why. The building is still there; the pub is not. Everyone asks directions by it anyway.
What you actually rent on the SE23 hills
The signature Forest Hill property is the big Victorian or Edwardian villa on a hill street, and it shapes the clean more than anything else does. These were built as houses for one well-off family, three storeys, bay windows, high ceilings, deep cornicing, a long staircase. Most are now carved into two, three or four flats. A conversion like that means original sash windows painted over a dozen times, skirting with decades of gloss on it, picture rails up where nobody dusts, and a stairwell you somehow share half-responsibility for.
Where the villa is split, each flat fails its check-out in its own way. The garden flat gets the kitchen extension and the patio doors, and it gets marked on that glass and on the mud by the back threshold. The middle flat gets the bay and the period detail. The top flat gets the loft conversion, the dormer windows nobody can reach from outside, and a bathroom plumbed into the eaves as an afterthought, which is exactly where limescale and black mould like to gather. Same building, three different arguments at the end of a tenancy.
It is not all villas. There is plenty of Edwardian and interwar terrace on the lower streets, blocks of ex-council and council housing around the ward, and a steady churn of newer buy-to-let flats near the station that change hands through the agents on London Road and Dartmouth Road. The new-builds come with fitted kitchens and combi boilers, so on those the deductions shift from sash windows towards oven interiors, shower screens and that grey seal round the washing-machine door. Different stock, same checklist.
Then there are the streets, which I will grumble about because they earn it. A lot of the older roads climb hard off the main drag, they are narrow, and the period houses almost never have off-street parking or a loading bay. On a collection morning a large van has to pick its spot or it blocks half the hill. The newer blocks usually have somewhere to pull in; the converted villas usually do not. None of that changes the clean itself, but it changes the morning of one, and it is the first thing I ask about when a Forest Hill job comes in.
One genuinely local quirk is worth naming on its own. Because so much of Forest Hill sits on or near the old wooded ridge, with gardens running up to the trees, the lets here pick up the green in a way flatter neighbourhoods do not. Patio doors go cloudy. Frames hold moss on the shaded side. Carpets near a garden door carry more dirt. A garden-flat check-out around here very often turns on that patio glass and the threshold carpet, so it is the first thing we deal with rather than the last.
Designation 3: licensing on the Forest Hill side
This is the part landlords keep getting wrong, so here it is plainly. Lewisham brought in selective licensing on 1 July 2024, it runs five years, and it is split into three designated areas. Forest Hill ward sits in Designation 3, alongside Bellingham, Downham, Grove Park and Whitefoot. That is a different designation from the neighbours people assume share its rules. Honor Oak, just up the ridge, is in Perry Vale ward in Designation 1; Crofton Park is in Designation 2; Sydenham, next door, is in Designation 2 as well. The scheme is a single set of rules, but the designation your address falls in is decided by ward, so check the address, not the postcode.
In plain terms, a landlord letting an ordinary Forest Hill flat or house to a single household, or to two unrelated sharers, almost always needs a selective licence from Lewisham to do it. The scheme catches around 20,000 properties across the borough. The council only brought it in where it could show the need, which is why a couple of wards, Telegraph Hill among them, sit outside it. Forest Hill is firmly inside.
Houses in multiple occupation are handled separately and more widely. Mandatory HMO licensing applies right across Lewisham, and the council added a borough-wide additional HMO scheme on 5 April 2022 for smaller shared houses. So a shared villa on a Forest Hill street, exactly the sort of big house that ends up as a six-person share, can be caught under more than one set of rules at once. The maps and the detail are on the Lewisham Council selective licensing pages.
Why does a cleaning firm bang on about licensing? Because a licensed let is a managed let, and a managed let gets a proper check-out. A licensed landlord has written conditions to keep the place in order, an agent or an inventory clerk running the inspection, and a paper trail a deposit scheme will read if it comes to a dispute. The casual wipe-round-and-hand-the-keys-over arrangement is dying out in Forest Hill, and the standard you are cleaning to has climbed right along with it.
The deposit itself is protected by law. Your landlord has to put it in one of the government-approved schemes within 30 days of taking it, and the rules sit on GOV.UK. When the tenancy ends, Shelter puts it simply: you should get your deposit back, and the landlord needs a real reason to keep any of it. Cleaning is the reason landlords reach for most. The law is shifting too. The Renters’ Rights Act 2025, which received Royal Assent on 27 October 2025, changes how tenancies start and end, and it makes a clean, well-evidenced check-out matter more, not less.
- Selective licence
- A licence a landlord needs to let an ordinary private flat or house in a designated area. Forest Hill ward falls in Designation 3 of the Lewisham scheme that began on 1 July 2024; the council pages and map show exactly where the line runs.
- Check-in inventory
- The report drawn up at the start of the tenancy that records the condition and cleanliness of everything, room by room. Your check-out is judged against it, so dig out your copy before you book a clean.
- Deposit scheme
- One of three government-backed schemes that hold your deposit and run free dispute resolution if you and the landlord cannot agree. The basics are on GOV.UK.
- End-of-tenancy clean
- A full clean of an empty property to the standard set by the check-in inventory, aimed at getting the deposit back. That is a different and harder job than a regular tidy. Our end-of-tenancy service is built around exactly that.
How a Forest Hill check-out is scored
A check-out is not someone wandering through and nodding. On a managed Forest Hill let it is an inventory clerk working through a report room by room, holding what they see against the check-in, and marking anything that has slipped. Cleanliness gets challenged more than anything, because unlike a scuffed wall or a worn carpet, dirt is plainly something the tenant is expected to put right.
The clerk does not grade on a feeling. They photograph the oven door and the grill pan. They run a finger along the tops of doors and the picture rails, which in these tall villa rooms are precisely the surfaces a tired tenant never reaches. They pull out the washing-machine drawer. They check behind the loo and the limescale on the taps. They look at the windows inside and, on the lower flats, the outside they can get to. Every line gets a note, and the notes become the landlord’s case for a deduction.
We clean to the report, not to a mood. Our checklist is a 57-point agent-approved run-through, drawn from what inventory clerks across south London actually write down, and it is the same checklist whether you are in a garden conversion off Dartmouth Road or a new-build flat by the station. We work it in order so nothing slips, because the one surface you forget is the one that ends up photographed in the report.
We clean to the report, not to a mood.
The other thing that decides a check-out is evidence, on both sides. The clerk has their photos. You should have yours: the dated check-in inventory, and pictures of the place clean and empty on the day you go. When tenants come to us first, get the professional clean done and keep the receipt, the argument is usually over before it starts. Shelter and Citizens Advice both make the same point: a landlord can only keep money where there is a good reason and proof to back it, and a clean property with a receipt removes the reason.
What our Forest Hill move-out clean covers
The clean is not charged by the hour. We price it by the size of the property, and the team stays until the checklist is done, which is the only honest way to clean to an inventory standard without watching a clock. We bring our own kit and our own materials. All we ask is that the place is empty of your belongings, the electricity is on and the hot water is running, because nobody deep-cleans a kitchen in the dark with cold taps.
The kitchen takes the most time, every single time. The oven comes apart, racks and trays out, the door split where it lifts, so the carbon between the panes is actually cleaned rather than smeared around. Hob, splashback, extractor and filter. The fridge and freezer cleaned and left open if you have emptied them, so they do not go sour. Cupboards wiped inside and out, doors and handles, the gap beside the appliances where grease builds, and the floor done last.
Bathrooms are the other battleground, and in the eaves bathrooms of the top-floor conversions they are fiddly. We descale the taps, the shower head and the screen, scrub the grout, clean the loo properly including the hinges and the base, polish the mirror and the chrome, and clear the extractor vent. Limescale is the recurring SE23 problem and it is the thing a clerk photographs first.
Through the rest of the flat it is the unglamorous, careful work an inventory rewards. Dusting from the top down, light fittings, the tops of doors and those painted picture rails, skirting, switches and sockets. Internal glass and the window frames; on the lower flats the reachable outside glass as well. Marks off the paintwork. Cobwebs out of the corners, which the high Victorian ceilings collect like nothing else. Carpets vacuumed throughout, hard floors vacuumed and mopped, and the whole place left smelling of nothing rather than of cleaning product.
Some jobs sit outside a standard move-out clean and are worth booking alongside it when the place needs them. Heavy carpets that have not been touched in years want a proper hot-water carpet clean rather than a quick vacuum. Tired sofas and armchairs the same, with our upholstery cleaning. A genuinely filthy oven can go in as a standalone oven clean if it is the only sticking point. For the top flats and their unreachable dormers there is exterior window cleaning with a water-fed pole. If a let has been lived in hard and needs more than a move-out clean, our deep cleaning goes further, and for anyone settling in rather than leaving there is regular domestic cleaning too. There is a full floor cleaning service as well for the original boards and tiles these villas are full of. And because moving day in SE23 is usually one knot of logistics, we can fold in removals so the clean and the van are not two separate headaches.
We are not a faceless agency about any of this. We are on the books of 300+ letting agents across London, a fair few of them the firms working the parades on London Road and Dartmouth Road, and over the years we have helped tenants recover £1.2m in deposits that would otherwise have gone on cleaning deductions. That is the entire point of the service.
The jobs that quietly cost SE23 tenants their deposit
After enough Forest Hill cleans you learn where the money actually goes, and it is rarely the obvious stuff. People scrub the visible kitchen and the bathroom floor, then lose fifty quid on things they never thought to look at. These are the ones that come up again and again on this patch.
The oven is first, always. It is the single most common cleaning deduction we see, because a baked-on oven takes hours to do properly and most people give it twenty minutes the night before. A clerk opens the door, sees the state of the glass, and writes it down. The grill pan and the trays count too.
Limescale is second, and it is a south-east London thing as much as a Forest Hill one. The hard water leaves a film on taps, shower screens and kettles that reads as grime to a clerk even when the surface is sound. It needs descaling, not a wipe with a cloth.
Windows are third, and here that is partly the housing. The villas have a lot of glass, the sashes are awkward, and the top-floor conversions have dormers nobody has cleaned in years. Add the damp coming off the wooded ridge and the frames hold grime and moss on the shaded side. Inside glass is the tenant’s job; the outside of an upper flat usually needs a pole.
Then the quiet ones, which between them probably account for more lost deposit than the oven does. The washing-machine drawer and the rubber door seal, black with mould nobody opens. Extractor fans furred grey with dust. The tops of doors and the painted picture rails. Skirting behind where the sofa stood for three years. Inside the kitchen cupboards. Behind the toilet. Limescale aside, it is almost always the high, the hidden and the awkward that costs people, because those are the surfaces a worn-out tenant cannot face and a clerk goes straight to.
And the local one. Flats backing onto the gardens and the green ridge collect leaf mould against the patio doors and mud on the carpet by the garden entrance, far more than a flat on a paved street would. It is the address, not neglect, but it still has to be cleaned off, and a garden-flat check-out almost always turns on that patio glass and that threshold carpet.
What it costs, and how the guarantee works
Price follows the size of the property, not the hours. A studio or a one-bed conversion sits at the lower end, a three, four or five-bed villa with a couple of bathrooms and a garden flat below at the upper. You get a fixed quote up front, so there is no meter running and no surprise at the end, and the team stays as long as the checklist takes. We work seven days a week, weekends included, which matters in Forest Hill where so many tenancies end mid-week around a London Bridge commute. The full price list sits on our prices page.
The guarantee is the part that does the real work. Our first-time pass rate is 97%, which is to say that on all but a small fraction of jobs the check-out is signed off with no cleaning deduction at all. For the rest, there is a 48-hour re-clean guarantee: if the inventory clerk or the agent flags the cleaning within 48 hours of us finishing, we come back and put it right at no charge. You do not pay twice, and you do not have to win an argument to get a problem fixed.
You do not pay twice, and you do not have to win an argument to get a problem fixed.
That guarantee is also why the agents trust us with their own clients. An agent recommending a cleaner is staking their name on it, and the re-clean promise means they are not gambling. It is the same reason the checklist is built around what clerks actually mark rather than a generic template, because a pass first time is cheaper for everyone, us included, than a return trip.
Worth being clear about what the price is not. It is not an hourly booking you keep topping up, and it is not a regular clean dressed up as a move-out. A move-out clean is judged against the check-in inventory and aimed squarely at the deposit, which is harder than a fortnightly tidy. If the fortnightly tidy is what you are after, say so and we will quote that instead.
Booking a move-out clean in Forest Hill
Booking is meant to be the easy part. Call us on 0333 555 2076 or use the contact form, tell us the postcode, the number of bedrooms and bathrooms, and whether it is a converted villa with stairs or a flat on the level. That is enough for a fixed quote. If you can also say whether there is a garden door onto the green and how high the flat is, better still, because it tells us what to bring for the patio glass and the dormer windows.
Tell us the parking honestly too. Some of the hill streets off London Road and Dartmouth Road are narrow and on controlled bays, and a large van needs to know where it can sit before the morning, not during it. We would much rather hear about it in advance than have the team circling the block while your clerk is due.
Time it for after the furniture has gone and before the clerk arrives. An empty flat cleans faster and to a higher standard, and a clean that is fresh on inspection day photographs best. Most Forest Hill tenants book us for the morning of the check-out or the day before; either works, as long as the place is empty and the utilities are on.
If you are moving within the area rather than out of it, the same team covers the rest of this corner of the map. We run move-out cleans up the ridge in Honor Oak and Honor Oak Park, next door in Sydenham and Lower Sydenham, across to Crofton Park and down the line to Brockley, over towards Catford, and on the Dulwich side in East Dulwich and Dulwich. The full picture of how the service works sits on the end-of-tenancy hub, and you can see the wider Lewisham end-of-tenancy coverage from there too.
Questions from Forest Hill tenants and landlords
Do you guarantee I will get my deposit back?
No cleaner who is being straight with you can promise that, because your deposit also turns on damage, wear and any rent owed, and none of those is a cleaning matter. What we guarantee is the cleaning. Our first-time pass rate is 97%, and if the inventory clerk or the agent challenges the clean within 48 hours we come back and redo it free. On the cleaning line of the check-out report, that is about as close to a sure thing as you will get in SE23.
How long does an end-of-tenancy clean take in Forest Hill?
It depends on the size and the state of the place. A one-bed conversion might take a small team three or four hours; a four or five-bed villa split over three floors, with two bathrooms and a kitchen extension, can run most of a day. Because we price by the property and not by the hour, the team stays until the 57-point checklist is finished rather than downing tools at a set time.
Does my Forest Hill landlord need a selective licence?
Most likely yes. Forest Hill ward sits in Designation 3 of Lewisham’s selective licensing scheme, which started on 1 July 2024, so a landlord letting an ordinary flat or house here to a single household, or to two sharers, usually needs a licence from the council. It affects your landlord more than you, but a licensed let tends to be a managed let, with a proper inventory and a paper trail if a deposit dispute ever gets formal.
Do I need to be there while you clean?
You do not. Plenty of Forest Hill tenants drop the keys with us or leave them with the agent and get on with the move. We just need the place empty of your belongings, the electricity on and the hot water running. If you would rather be there, that is fine too.
Can you clean the outside of the windows on a top-floor flat?
Yes. The upper flats in these tall villas have panes that have not been reached in years, so we use a water-fed pole for the outside glass, which is the method that leaves no streaks. Inside glass is part of the standard clean; the outside of an upper conversion is the bit worth flagging when you book.
What if the carpets are stained rather than only dirty?
A vacuum will not shift set-in stains, and a flat backing onto the green ridge often has mud walked in from a garden door. For that we use hot-water extraction, which pulls the grime up out of the pile rather than pushing it around. It is a separate job from the move-out clean and best booked at the same time so the whole lot is done in one visit.
Do you bring your own cleaning materials and equipment?
Yes, all of it. We turn up with our own machines, cloths and products. You do not need to leave anything behind, and you do not need to buy supplies for us. All we ask is that the power and the hot water are on at the property on the day.
How far in advance should I book a move-out clean?
The end of the month and the back end of the week are the busy stretch, because that is when most SE23 tenancies turn over, so a few days’ notice is sensible if your check-out date is fixed. Even so, we work seven days a week and can often fit a clean in at short notice. Call 0333 555 2076 with your date and we will tell you straight whether we can make it.
Is end-of-tenancy cleaning the same as a deep clean?
Not quite. A deep clean goes hard at a property someone is still living in, or one that has been let go badly. An end-of-tenancy clean is aimed squarely at the check-in inventory and the deposit, so it covers the empty flat top to bottom against the standard recorded when you moved in. If a place needs both, say so when you call and we will quote it properly.