Appointing an Interior Designer: The Scope That Prevents Later Arguments

Most disputes with an interior designer are scope disputes, not taste disputes. Here is the appointment sequence and the wording that decides who draws, who specifies and who checks.

An interior designer appointment goes wrong when the owner buys a look and the designer sells a service, and nobody writes down where one ends. The fix is a scope document that names every deliverable, the number of design options included, who issues the drawings the contractor builds from, and who inspects what arrives on site. Set that out before you discuss style, and the rest of the relationship becomes a series of approvals rather than a negotiation.

Before stage one

You are ready to appoint when you can state the spaces in scope, the condition they are in now, when you need to occupy them and roughly what you are prepared to spend on the finished result. You do not need to know what you want it to look like. A designer who cannot work from a brief that stops at function, programme and budget is not ready to be appointed either, because those three constraints are what a specification has to satisfy.

• List every room in scope and, separately, every room explicitly excluded, so the excluded ones cannot migrate in during design.
• Confirm whether the building is a shell, a stripped-out space, a completed structure or an occupied home, because that governs survey effort.
• Fix the date you need to use the space and work backwards through procurement lead times before you agree any design programme.
• Decide whether the designer will also administer the contract with the installer, or whether that sits with you or a separate consultant.
• Agree how many design options and how many rounds of revision the fee covers, in numbers, not in adjectives.

Stage 1: Brief and measured survey

The designer records what exists: dimensions, levels, window positions, structural elements that cannot move, the location of drainage stacks and electrical boards, and the ceiling void available. In parallel they interview you about how each space will be used, how many people it has to seat or sleep, what you own already and what must be accommodated. The brief should capture habits rather than wishes, because habits are testable: who cooks, where guests enter, whether children use the same route as visitors, how often you host and at what scale.

• Deliverable: A measured survey drawing of the existing condition plus a written brief listing use, occupancy and constraints room by room.
• Owner: Designer surveys; the owner signs off the brief.
• Approval gate: The owner confirms in writing that the recorded brief matches intent before any layout work begins.

Stage 2: Concept and spatial planning

Layout options come before appearance. At this stage the designer tests furniture arrangements against circulation, door swings, sightlines from the entrance, and the separation between guest and family routes where that matters to the household. Appearance is communicated through a limited palette and reference images rather than finished visuals, because polished imagery invites approval of a mood when what needs approving is a plan. Expect two or three genuinely different options, not three versions of one idea.

• Deliverable: Dimensioned layout options with furniture shown to size, plus an indicative material and colour direction.
• Owner: Designer leads; the owner chooses one option to develop.
• Approval gate: One layout selected and initialled; further layout changes after this point are treated as variations.

Stage 3: Design development and sample approval

The chosen layout hardens into real products. Floor finishes, wall treatments, ceiling build-ups, joinery configurations, sanitaryware, ironmongery and light fittings are each selected and recorded. Physical samples matter more than images, and they should be viewed in the actual space under the actual lighting whenever the building is available, because stone, timber and paint all read differently under site conditions than under showroom light. Imported items should be checked at this stage for conformity requirements, since products subject to Saudi standards need valid certificates to clear customs through the SABER platform, and a late certificate problem stops a shipment rather than delaying it politely.

• Deliverable: A sample board or sample boxes per room, each item labelled with manufacturer, reference and location.
• Owner: Designer selects and presents; the owner approves item by item.
• Approval gate: Every sample signed and dated, with the signed set retained as the quality benchmark for site inspection.

Stage 4: Documentation for pricing and construction

This is the stage owners most often skip and most often regret. Drawings move from presentation quality to construction quality: setting-out plans, reflected ceiling plans showing every ceiling feature and service penetration, elevations for every wall that carries joinery or tiling, sections through wet areas, and joinery details at a scale a workshop can read. Alongside the drawings sits the finishing schedule, which lists for each room the floor, skirting, wall, ceiling, paint reference, door type, ironmongery set and sanitary fittings. Without that schedule, pricing from two installers cannot be compared, because each will have assumed a different standard.

• Deliverable: A tender set: construction drawings, finishing schedule, joinery details and a written specification of workmanship standards.
• Owner: Designer documents; a cost consultant or the owner reviews for completeness.
• Approval gate: The set is issued for pricing only once every room appears in the schedule with no blanks left as to be confirmed.

Stage 5: Tendering and installer selection

The same documented package goes to at least three installers, with a single deadline and a single set of questions answered to all of them. Prices are compared line by line against the schedule, not totals against totals, because a cheaper total usually means a thinner specification somewhere. Check that each price includes delivery, protection of completed work, site cleaning, waste removal and making good, and confirm how value added tax is handled in the quotation, with the published headline rate of 15% to confirm with ZATCA as it applies to the contract.

• Deliverable: A priced comparison against the schedule, with exclusions and qualifications from each tenderer listed openly.
• Owner: Designer or cost consultant analyses; the owner selects.
• Approval gate: Award only after the selected installer confirms in writing that they have priced the issued documents without substitution.

Stage 6: Site works and design supervision

During installation the designer answers queries, reviews shop drawings from the joinery workshop, inspects first installations of each type before the trade repeats them across the project, and records instructions in writing. The first bathroom, the first wardrobe and the first ceiling bulkhead should each be inspected and accepted before the remaining ones are built, because a tolerance error repeated across a floor is far more expensive to correct than the same error caught once. Keep a single instruction log; verbal agreements on site are the most common source of later disagreement about who authorised what.

• Deliverable: Inspection records, reviewed shop drawings and a numbered log of site instructions and their cost effect.
• Owner: Installer builds; designer inspects; the owner authorises any variation.
• Approval gate: Each repeated element has a signed first-off acceptance before the trade proceeds.

Stage 7: Completion, snagging and close-out

Walk the finished interior in daylight and again at night with the lighting on and the curtains fitted, because defects in paint, alignment and light distribution appear under different conditions. Record items room by room with a photograph and a location reference. Separate genuine defects from items you have chosen to accept, and separate both from outstanding work that was never completed, because those three categories carry different consequences for payment. Close-out also means collecting the things you will need in five years: paint references, spare tiles, hardware models and the warranties attached to installed items.

• Deliverable: A completed snag list signed off, plus an operation and maintenance file with product data, spares and warranties.
• Owner: Designer and owner inspect jointly; installer rectifies.
• Approval gate: Final payment released only after rectification is verified and the maintenance file is handed over in full.

Handovers between stages

The weak joints in this sequence are between brief and concept, between sample approval and documentation, and between tender and site. At the first joint, confirm that the brief captured use rather than taste. At the second, make sure the item approved on a sample board is the item written into the schedule, with the same reference, because a designer naming a product generically and an installer buying the cheapest thing that matches the description is a predictable and avoidable failure. At the third, make sure the installer prices the issued set and says so, and that any substitution they propose is approved against the original sample rather than accepted on the promise that it is equivalent.

How you know it is finished

The appointment has done its job when you hold a signed finishing schedule that matches what was built, a snag list that is closed, and a maintenance file that lets a future contractor repair the interior without guessing. Standards, conformity requirements and procurement conditions in this field are revised periodically, so verify the current position with the relevant authority or supplier at the time you act rather than relying on what applied to an earlier project. Where the appointment involves contract wording, liability for defects or retention of money, take the drafting to a licensed legal adviser before you sign rather than after a dispute has started.

Domira designs and delivers interiors as part of the building, not after it: the finishing schedule, the joinery and the services coordination that decide whether a space looks built or assembled. Share the space and Domira will tell you what it would specify and what it would leave out.