Interior design and layout checks in Kerala
Layout, then looks, then the freeze. Every revision after the freeze is a change order - so the freeze happens only after you have seen it in 3D and the appliance list is final.
The checks at this stage (4)
- Concept layout approved, revisions closed
Zoning, the kitchen work triangle, wardrobe internals against your counted inventory, and clearances - drawer pull-out against the opposite wall, bed against wardrobe swing. Revisions happen here, while each one costs a drawing and not a carcass.
Kolo can check this: Interior design review
- 3D views reviewed before the freeze
Colour, finish and proportion read differently in 3D than on a laminate swatch. See it before the freeze - and remember the render is indicative; the spec sheet, not the picture, is what the vendor owes you.
- Production drawings and overlay complete
Every carcass dimensioned unit by unit, plus the electrical and plumbing overlay - every new point and relocation mapped against the building's as-built. Vendors pricing without production drawings are pricing assumptions.
- Spec sheet frozen: core, finish, hardware
Core material with type, grade and brand together; finish with brand and code; hardware with brand and series - the same hinge brand spans a wide price range across series. Frozen here so every vendor prices the same interior.
Kolo services for this stage
Interior design reviewComing soon
An independent read of your interior layout and 3D views, before the design is frozen.
- A room-by-room read of your interior layout and 3D views
- Storage, walking clearances, light and wiring points checked
- What to change before the design is frozen, ranked by what it saves
Marked-up layout · ready in 5 working days
See Interior design review →Covers 1 of the 4 checks above.
Consider and compare: the decisions here
How your units get built
Factory-made modular, built by carpenters on site, or a mix. It decides where the quality evidence lives and how payment should be structured.
ModularMost common
Pick it when: You want machine finish and can hold payment to factory evidence.
Costs about the same
- Machine-cut precision and finish
- Faster on site once delivered
- Quality evidence lives off-site - demand it
- Front-loaded payment pressure
Site-built
Pick it when: You want daily eyes on the work and easy mid-course checks.
Costs about the same
- Work checkable on your floor daily
- Adjusts to out-of-square rooms easily
- Finish depends on the carpenter's hand
- Slower, with a live workshop in your home
Mix
Pick it when: Kitchens and wardrobes modular; odd corners and lofts site-built.
Costs about the same
- Each method where it is strongest
- Handles awkward spaces without forcing
- Two quality regimes to track
- Interface joints need agreeing upfront
Changing your mind later: Switching after the design freeze forces the drawings and every unit price to be redone - a fresh quote round and 2-3 weeks before anything is cut.
False ceiling extent
None, key rooms, or the whole home. Decided with the lighting plan - because the ceiling closes over the wiring and AC ducting for good.
None
Pick it when: Height is precious and surface wiring routes are acceptable.
Usually costs less
- Full room height kept
- Lowest cost and zero concealment risk
- Light positions limited to existing points
- AC piping runs visible or boxed
Key roomsMost common
Pick it when: Living and bedrooms get the design; utility spaces stay open.
Costs about the same
- Design impact where it is seen
- Cost contained to visible rooms
- Transitions between ceilings need detailing
- Two lighting regimes to plan
Whole home
Pick it when: A uniform ceiling language and full lighting freedom matter.
Usually costs more
- Uniform language, full lighting freedom
- All services concealed everywhere
- Highest cost and most concealment
- Every room needs the inspection window
Changing your mind later: Adding ceiling after first-fix wiring means redoing loops for new light positions - opened walls, a week of rework, and a patched paint job to hide it.
The existing floor
Keep it, replace it, or overlay wood-look flooring. The single biggest demolition, dust and level decision in the whole project.
Keep
Pick it when: The floor is sound and the budget belongs in the units.
Usually costs less
- Zero demolition, dust and lost weeks
- Budget concentrates on the furniture
- Floor level and design are fixed givens
- Old damage stays in view
Replace
Pick it when: You want full design freedom and will absorb the demolition.
Usually costs more
- Full freedom of material and level
- Fixes damp, damage and bad levels for good
- Demolition dust through the whole home
- The costliest and slowest path
Overlay
Pick it when: You want a wood feel fast, without breaking the old floor.
Costs about the same
- Quick transformation, no demolition
- Warm underfoot, easy to renew
- Raises floor level at every door
- Moisture care non-negotiable in Kerala
Changing your mind later: Decided after marking-out, it restarts the levels - skirting, shutter bottoms and door clearances are all set to floor height - re-marking and 1-2 weeks of rework.
What good work looks like
What a production drawing set is
Not a layout with pictures: every unit dimensioned - carcass sizes, shutter sizes, internal divisions, hardware positions - plus the electrical and plumbing overlay reconciled with the building. This set is what the factory cuts from and what every quote must price; anything not drawn is not priced.
- Every unit dimensioned down to internal divisions
- The overlay showing every new and moved point
- One revision number across the whole set
- A pretty layout standing in for production drawings
- Internals left to the factory's standard
- Overlay and building as-built telling different stories
A spec sheet that names core, finish and hardware
Three columns per unit, none optional: core as type plus grade plus brand together; finish as brand plus code; hardware as brand plus series. The same hinge brand spans a wide price range across series - a sheet naming brands without grades and series has priced nothing at all.
- Type, grade and brand together on every core line
- Finish codes specific enough to reorder from
- Hardware series named, not just the brand
- The word waterproof where a grade should be
- Brand-only lines that any grade can satisfy
- Hardware as premium fittings with no series
The appliance-dimension rule
Built-in appliances drive the cutting list: hob width, oven housing, chimney duct route, fridge clearance. The models - or at minimum their dimensions - lock before the design freezes, because a carcass cut for an assumed appliance meets the real one on installation day, and one of them loses.
- Every built-in appliance dimensioned in the drawings
- Chimney duct route drawn, not discovered
- Clearances for door swings and ventilation stated
- Appliance shopping planned for after production
- A housing cut to a guessed standard size
- The fridge arriving wider than its alcove
The layout review — triangle, walls and clearances
Before any finish is discussed, the concept layout gets walked room by room. The kitchen's hob, sink and fridge should form a compact triangle. Each wardrobe wants the longest unbroken wall in its room — moving a bedroom door two feet to make that wall is trivial on paper and impossible after carcasses are cut. And every moving part needs its swing: a drawer pulled fully out against the opposite wall, a wardrobe door against the bed, the toilet door against the vanity. The very common Kerala basin recess outside the toilet is usually better absorbed into the toilet, freeing a dressing niche used thirty minutes a day instead of five.
- Furniture drawn at true scale — a sofa is 2.5–3 ft deep, chairs need 3 ft of pull-out from a table edge
- Every drawer, shutter and door swing traced against what faces it
- Wardrobes on the longest continuous wall, not squeezed beside windows
- The work triangle compact, with the utility door off the kitchen, not the dining
- A layout approved from a 3D render without walking the clearances
- Wardrobe doors and the study table fighting for the same wall, found at installation
- A revision that costs a drawing today priced as a carcass next month
The core family: plywood grades, MDF, particle board
Plywood is not one material: MR grade suits dry interiors, BWR resists moisture, BWP/marine is the wet-area grade - and each carries its IS marking on the sheet. MDF and its denser HDHMR cousin machine beautifully but drink water; particle board is the budget floor. The spec sheet names the grade per unit and per zone - kitchens and bathrooms are not bedroom lofts.
- Grades zoned: wet areas specified tougher than dry lofts
- The IS marking named alongside type, grade and brand
- Sink and counter units on the moisture-rated grade
- One grade word covering the whole home
- Waterproof written where BWR or BWP should be
- Particle board specified under a sink
IS 303 (plywood) · IS 710 (marine) · IS 12406 (MDF) · IS 3087 (particle board)
The finish family: laminate to veneer
Finishes are a ladder, and each rung prices and behaves differently: laminate is the durable workhorse, sold by brand and code; acrylic gives the gloss and asks for care; PU paint gives the seamless look and depends on the spray shop; membrane foil wraps routed MDF; natural veneer is wood, polished on site. The spec names the rung per unit - a finish word without a brand and code prices nothing.
- Every unit's finish named with brand and code
- Wet-area finishes chosen for wipe-down life
- Sample or swatch codes filed with the spec sheet
- Premium finish written with no rung named
- A gloss chosen with nobody assigned to maintain it
- Veneer promised without its polishing system
IS 2046 (decorative laminates)
The hardware family: hinges, channels, lifts
Hardware is the moving half of the interior: hinges plain or soft-close, drawer channels from basic telescopic to full-extension box systems, lift-ups for overhead shutters - each sold as brand PLUS series, and the series is where the price lives. Cycle-rated, load-rated, and felt every single day. The spec fixes brand and series per unit type; the cartons prove it later.
- Brand and series stated for every hardware type
- Heavier drawers assigned the stronger channel series
- Soft-close specified where it is actually wanted
- Premium fittings with no series named
- One channel series carrying every drawer weight
- The brand's cheapest series riding a famous logo
Which core goes where — material by application
No single core is right for the whole house. Kitchens and wet zones want BWP (IS 710) marine ply or WPC; wardrobes and study furniture want HDHMR; bathroom vanities want aluminium profile or WPC; living-room units tolerate the budget cores. The two cores to refuse: particle board anywhere structural, and MDF anywhere water reaches.
- Kitchen cabinets: BWP marine ply or WPC first choice, HDHMR acceptable, BWR the budget floor — never particle board
- Bedroom wardrobes: HDHMR first choice, marine ply the alternative, 17mm multi-wood the budget floor — avoid MDF
- Bathroom vanities: aluminium profile or WPC first choice, marine ply acceptable — never standard plywood
- Living-room units: 17mm multi-wood or HDHMR; MR ply as the budget floor
- Study tables and desks: HDHMR or multiwood — load-bearing spans need the denser core
- Every core named on the spec sheet with TYPE + GRADE + BRAND: 'Marine ply' means IS 710 BWP, in writing
- MDF in a wet area — it swells and disintegrates; no finish rescues it
- Particle board sold as 'engineered wood' in load-bearing carcasses — weakest screw-holding and water absorption of any core
- BWR passed off where BWP was specified — BWR tolerates splashes, not standing water; under-sink units delaminate
- 'Waterproof ply' with no IS grade on the line — the phrase is marketing, the grade is the spec
- 'Multiwood' accepted without composition or density stated — the name spans very different boards
IS 710 (BWP marine plywood), IS 303 (MR/BWR plywood); cabinet-material technical comparison, cross-checked against manufacturer datasheets
Thickness — what goes where, and why
Thickness is a per-part spec, not a per-house spec. A quote that names one thickness for everything has not engineered the units.
- Carcass boxes: 18mm (kitchens toward 18–20mm for load and moisture)
- Shutters and wardrobe doors: 16–18mm — heavy enough to hold hinges, light enough not to sag them
- Shelves spanning over 60cm: 20–25mm, or a mid-support — sag is permanent
- Drawer boxes: 12–15mm — weight matters for smooth running
- Back panels: 5.5–8mm — thicker is wasted money, thinner bows
- Long shelves in 18mm with no mid-support — visible sag within the year
- Back panels in 4mm hardboard when the spec sheet said 6mm ply
- Shutter thickness quoted, carcass thickness silently thinner
Cabinet-material technical comparison — thickness and density recommendations, per manufacturer datasheets
Finish compatibility — what sticks to what
Finish and core are chosen together. A finish quoted on a core it does not suit either fails early or hides a core swap.
- Marine ply takes laminate, veneer, PU and acrylic — the full range
- HDHMR takes laminate, acrylic, PU and membrane — the pressed-membrane shutter look needs HDHMR or MDF, not ply
- WPC and multiwood take laminate, acrylic and UV print — natural-wood polish is not achievable on them
- MDF is the PU-paint core — dry areas only
- Aluminium takes powder coating and glass inserts
- A 'veneer and polish' finish quoted over WPC — the look is impossible on that core, so one of the two will silently change
- Membrane shutters quoted on plywood — membranes need a fibre-board face to press onto
Cabinet-material technical comparison — finishing compatibility, per manufacturer datasheets
Reading the moisture claims
The grades are defined by test, not adjective. BWP (IS 710) survives a 72-hour boil test — that is the under-sink, wash-area grade. BWR (IS 303) resists hot water for hours, not days — a semi-wet grade. WPC and aluminium do not absorb water at all; HDHMR resists moisture but is not for standing water. Everything else is an adjective.
- The IS number ON the quote line, next to the brand
- The wet-area core policy frozen at this item applied to every unit that touches water: under-sink, wash counter, utility, bathroom vanity
- Termite protection stated as composition (WPC, aluminium) or as treatment (ply, HDHMR) — treated cores should name the treatment
- The 72-hour claim quoted for a board that is actually BWR — the grades are routinely conflated in Kerala quotes
- Termite warranty offered on a core that needed chemical treatment nobody performed
IS 710 (boiling-water-proof grade), IS 303 (boiling-water-resistant grade)
Brands Kerala interior quotes actually name — observed frequency, not endorsement
What appears on real Kerala interior quotes, so the names on yours read in context. Frequency means often-specified, never better. Hardware: EBCO leads the observations with Hettich close behind — and the honest headline is the other pattern: whole quotes, thirty-plus lines, naming NO hardware brand at all, which the spec sweep treats as a gap on every line. Cores: 710 marine ply dominates the observed lines, WPC second and growing, HDHMR and BWR behind; named board brands seen include Century and Green Gold for ply and a cluster of Kerala WPC labels. Finishes: laminate is the overwhelming observed finish, mica a distant second, veneer and acrylic occasional; laminate brand pools of Merino, Greenlam, Century and others are common, and Gyproc board with steel channel is the named false-ceiling system where one is named at all. Edge banding is usually unstated — the observed norm is 0.8–1mm, and one quote naming 2mm imported banding on every line stood out precisely because naming it is rare.
- Hardware brand AND series on every moving part — the same hinge brand spans a fourfold price range across series
- The board brand next to its grade: a brand alone is marketing, a grade alone is unverifiable at the factory visit
- Laminate brand and CODE per unit, or the finish is whatever sheet is in stock that week
- Edge-banding thickness stated — the unstated default is the thin one
- A brand POOL read as a warning: the warranty attaches to whichever brand arrives, and you do not control which
- A quote with rates on every line and brands on none — precise about money, silent about what the money buys
- 'Century or equivalent' with the equivalence judged by the vendor after the advance is paid
Kerala Interior Market Offerings KB v2.0 brand tracker — frequency counts across 279 quotation lines (2026)
Adhesives, fasteners and edge treatment — the consumables nobody specifies
The spec sheet that names the board and the hinge but not the glue, the screw or the edge band has left the three cheapest components — and three of the commonest failure points — to whatever is in the fitter's bag. Freeze them here with everything else: the adhesive type for each joint duty, the fastener metal for each zone, and the edge-band material, thickness and application method per unit.
- Adhesive named by type and duty: panel-to-panel joinery, laminate pressing, and wet-area assembly are different adhesives — 'Fevicol' without a grade is a brand, not a spec
- SS304 fasteners and fittings in wet zones — mild steel under a sink announces itself as rust streaks within the year
- Edge banding: material and thickness stated (0.8–2mm PVC/ABS is the observed range), machine-applied with hot-melt or PUR — hand-ironed banding peels
- Every cut edge SEALED on wet-area units, including the ones that face the wall — moisture enters boards through edges, not faces
- WPC and aluminium hardware fixed with the manufacturer's specified fixings — ordinary wood screws strip in WPC under load
- Marine ply carcass with unsealed edges under the sink — the 72-hour-boil board fails at the one surface the test never touched
- Laminate lifting at edges because the banding was ironed on site instead of pressed
- Hardware pull-out in WPC because wood screws were driven without the maker's inserts
Cabinet-material technical comparison — installation and maintenance guidance, per manufacturer datasheets
Red flags and money traps
Move a wall of storage on paper and it costs a drawing; move it after the BOQ is signed and it reprices the run; after production, it is a rebuilt carcass. See the 3D, close the revisions, then freeze - in that order.
Sequence: Layout revisions closed, 3D reviewed, appliances locked - then the freeze.
Hob, oven, chimney and fridge dimensions drive the cutting list. Appliances chosen after production meet housings cut to guesses - and on installation day, one of them loses. Lock models or dimensions before the freeze.
Before freeze: Every built-in appliance's dimensions in the drawings - the fridge alcove included.