Architects & Design-Build Cost in Mumbai: Rate Breakdown, Factors & Sample BOQ

01Indicative rates

For architects & design-build we usually quote 2% – 6% of project cost across Mumbai, Navi Mumbai and Thane. CRZ-governed and creek-facing sites add clearance and marine-grade material costs.

02What drives the cost

The main factors:

• Site access and material haul distance
• Soil and foundation type
• Structural system and spans
• Specification and brands
• Contract type: turnkey, lump sum or item rate
• Season and schedule

03What a good BOQ looks like

Every item should list description, unit, quantity, rate and brand — for example, M25 concrete in cubic metres or vitrified tiles of a named brand and size in square feet. That makes quotes comparable and protects you from surprises.

• Concept & plans — itemised with quantity and rate
• 3D elevation — itemised with quantity and rate
• Structural design — itemised with quantity and rate
• Working drawings — itemised with quantity and rate
• BOQ — itemised with quantity and rate
• Site supervision — itemised with quantity and rate

04How the 2%–6% Design Fee Breaks Down

Architectural and design-build fees in the MMR are quoted as a percentage of overall project cost, and that percentage itself varies by scope depth — a basic concept-plus-sanction-drawing package sits near 2%, while a full design-build service covering concept, structural design, working drawings, BOQ and ongoing site supervision through to handover runs closer to 5–6%.

On a ₹1 crore construction project, that translates to ₹2–3 lakh for drawings-only service versus ₹5–6 lakh for full design-build supervision — the difference is not padding, it reflects genuinely more man-hours spent on structural detailing, working-drawing revisions, and the recurring site visits a design-build contract requires through the construction period.

On a concrete ₹50 lakh construction project, a 3% drawings-only fee works out to roughly ₹1.5 lakh, while a 5% full design-build fee works out to roughly ₹2.5 lakh — a difference of ₹1 lakh that buys ongoing site supervision through the entire construction period, not just a set of drawings handed over at the start.

• Concept design & plans ~15% of the fee
• 3D elevation & visualisation ~10% of the fee
• Structural design & RCC detailing ~25% of the fee
• Working drawings (architectural + MEP coordination) ~20% of the fee
• BOQ preparation & tender support ~10% of the fee
• Site supervision through construction ~20% of the fee

05What Separates a Basic Drawing Package from Full Design-Build

A basic package (~2–3% fee) typically delivers sanctionable plans, a structural design good enough for municipal approval, and a handful of 3D elevation views — adequate for an owner who already has a trusted contractor and only needs compliant drawings.

A full design-build service (~5–6% fee) adds detailed working drawings for every trade, a line-item BOQ the owner can use to competitively bid construction, and periodic site supervision visits through the build to verify the contractor is following the drawings — this supervision component is what catches deviations (wrong rebar spacing, missed waterproofing detail) before they are buried under the next stage of construction.

Municipal liaison and approval-running — physically submitting documents, following up on sanction status, responding to municipal queries — can take weeks of calendar time even for a straightforward plan, and clients should confirm whether the architect's fee includes this liaison work or expects the client to handle it directly.

06Negotiation Points When Hiring an Architect

A common way architectural fees get underquoted at the proposal stage is by excluding the number of design revisions included — a 2% fee that assumes only one round of elevation revision can balloon once the client asks for a third or fourth iteration, each billed separately.

Before signing, get the number of included revision rounds stated explicitly, confirm whether site supervision visit frequency (weekly, fortnightly, milestone-based) is specified, and check whether structural design by a licensed structural engineer is included in the architect's fee or billed as a separate consultant — this last item is frequently assumed by clients to be included when it is not.

Most design contracts include two to three rounds of free revision on the concept and elevation stage; a client who anticipates wanting several more iterations than this should negotiate a higher revision allowance upfront rather than being billed per additional round later.

• Get the number of included design-revision rounds stated in the contract
• Confirm site-visit frequency during construction, not just a vague "supervision included"
• Check whether a licensed structural engineer's fee is bundled in or separate
• Ask whether liaison/approval-running costs (municipal office visits, document submission) are included

07Regional Variance in Design Fees

Design fees as a percentage of project cost do not vary much by MMR location, since drawing and structural design work is largely location-agnostic — but the absolute fee does scale with project cost, and project costs themselves are higher in Mumbai's congested plots due to more complex structural detailing needed for tight, irregular sites.

Architects working on coastal or CRZ-affected plots typically charge toward the higher end of the percentage band, since CRZ clearance documentation and additional structural detailing for corrosion-resistant design add real design hours beyond a standard inland plot.

Clients should also ask to see a recently completed project where the architect's working drawings were actually used for construction, not just a portfolio of renderings, since the real test of a design's quality is how closely the built structure matches what was drawn, not how attractive the presentation looked at the proposal stage.

08Payment Structure for Architectural Fees

Architectural fees are almost never paid as a single lump sum against the overall percentage — they are instead broken into design-milestone-linked tranches, because the architect's deliverables (concept, working drawings, BOQ, site supervision) are produced at different points across a project that can run a year or more from first sketch to handover.

A typical structure allocates 15% on concept design and plan approval, 20% on 3D elevation and structural design sign-off, 25% on completed working drawings and BOQ, and the remaining 40% spread across site-supervision visits through the construction period, often billed monthly or per-visit rather than in one tranche.

Clients should confirm whether supervision fees continue to be billed if construction is paused or delayed by the owner, since a pure percentage-of-construction-cost fee model can create ambiguity about what the architect is owed during an extended gap between design completion and construction start.

• Concept design & plan approval ~15% of fee
• 3D elevation & structural design sign-off ~20% of fee
• Working drawings & BOQ completion ~25% of fee
• Site supervision through construction ~40% of fee, often billed monthly or per visit
• Clarify fee treatment if construction is paused or delayed after design completion