Iyattva

Iyattva LLP — Construction costing expert

IYATTVA LLP is a construction consultancy specialising in Quantity Surveying, Cost Management and Building Information Modelling.

We provide project support to architects, developers, project owners, contractors and consultants across every stage of construction.

Our work focuses on the preparation, review, coordination and management of quantities, costs, BIM information and commercial documentation.

Accurate. Structured. Practical.

Accuracy
Information is measured and reviewed systematically.
Structure
Project information is organised so that it can be understood.
Practicality
Deliverables serve a clear project purpose.

We aim to give project teams information that can be used for planning, tendering, construction, measurement and cost management.

What we do

Quantity Surveying

  • Quantity take-off
  • BOQ preparation
  • Rate analysis
  • Measurement & billing
  • Reconciliation

BIM

  • Architectural modelling
  • Structural modelling
  • Coordination & clash detection
  • Documentation
  • Model-based quantities

Cost Management

  • Cost estimation
  • Cost planning
  • Tender evaluation
  • Cost monitoring
  • Value engineering

Design, quantity and cost are one conversation

A change in design changes quantities. A change in quantities changes cost. A change in cost affects procurement, tendering and construction. Our work connects those relationships.

DesignBIMQuantityBOQCostConstructionControl

Why Iyattva exists

Construction projects rarely lack information — they lack connected information. Drawings sit apart from BOQs. BOQs sit apart from cost reports. BIM models get used only for visuals. Site measurements never meet the commercial record.

We were built around one idea: project information should work together. Our vision is not to produce more data, but to turn project data into information people can decide with.

Our values

Precision
Small details carry significant commercial consequences.
Clarity
Information should be understandable, structured and traceable.
Integrity
Quantities and costs are represented objectively.
Collaboration
Good outcomes come from coordination between stakeholders.
Practicality
Solutions have to work on real projects, not only on paper.

Who we work with

  • Architects
  • Developers
  • Project owners
  • Contractors
  • Structural consultants
  • Project management teams
  • Government & institutional teams

Quantity Surveying

Measurement & commercial support

IYATTVA provides Quantity Surveying services across planning, tendering, construction and completion. We turn drawings and models into quantities, quantities into cost information, and cost information into decisions you can defend.

Services by project stage

Design & estimation

  • Quantity take-off
  • Bill of Quantities (BOQ)
  • Preliminary cost estimate
  • Detailed cost estimate
  • Trade-wise estimate
  • Rate analysis
  • Material quantity estimation
  • Cost planning

Tender

  • Tender BOQ
  • Tender documentation
  • Scope definition
  • Comparative statements
  • Contractor quotation analysis
  • Tender evaluation

Construction

  • Measurement sheets
  • Quantity verification
  • Contractor bill verification
  • Running account bill support
  • Variation & deviation management
  • Cost control & monitoring
  • Project cost reporting

Completion

  • BOQ vs. actual reconciliation
  • Final measurement
  • Final bill review
  • Final account support
  • As-built quantity information

How we measure

From drawings
Architectural, structural, MEP, details, sections, elevations, schedules and revision drawings — measured systematically into an organised format.
From BIM models
Model-based extraction, element-based measurement, category schedules and BOQ integration, checked against drawings and project requirements.
From Revit
Structured quantity schedules for walls, floors, roofs, columns, beams, openings, stairs, finishes and materials.

Work we measure

  • Earthwork
  • PCC
  • RCC
  • Reinforcement
  • Structural steel
  • Masonry
  • Plaster
  • Flooring
  • Waterproofing
  • Doors & windows
  • Painting
  • False ceiling
  • External development
  • Roads & paving
  • Plumbing
  • Sanitary
  • Electrical
  • HVAC
  • Fire fighting

Our workflow

  1. UnderstandScope, drawings, specifications, models, BOQ requirements and commercial objectives.
  2. MeasureQuantities taken systematically from drawings, models and schedules.
  3. StructureMeasurements organised into work packages, BOQ items and measurement sheets.
  4. VerifyReviewed for consistency, completeness and coordination with project information.
  5. EstimateApplicable rates incorporated to establish package-wise cost.
  6. MonitorQuantities, variations, bills and cost changes tracked against the baseline.
  7. ReportClear commercial information provided to support decisions.

Cost control, in sequence

DesignMeasurementBOQCostTenderConstructionControl

What you receive

Measurement

  • Detailed quantity take-off
  • Measurement sheets
  • BIM quantity schedules
  • Material quantity reports
  • Quantity comparison

Commercial

  • BOQ
  • Abstract of cost
  • Detailed estimate
  • Rate analysis
  • Tender comparison

Control

  • Contractor bill verification
  • Variation statement
  • BOQ vs. actual reconciliation
  • Cost reports
  • Final account support

Deliverables are customised to the project's size, stage and requirements.

Common questions

Can you prepare a BOQ from architectural drawings?
Yes. BOQs can be prepared from architectural drawings and coordinated with structural and MEP information where required.
Can you extract quantities from BIM models?
Yes. BIM models, including Revit models, can be used for model-based quantity extraction and quantity schedule development.
Can you verify an existing BOQ?
Yes. Existing BOQs can be independently reviewed for quantity discrepancies, missing items, duplication and other measurement-related issues.
Do you provide contractor bill verification?
Yes. Contractor bills are reviewed against approved BOQs, measurements, drawings, variations and project records, including rate, deduction, retention and advance recovery checks.
Can Quantity Surveying help control construction cost?
Yes. Regular quantity tracking, variation management, bill verification, reconciliation and cost reporting give better visibility and help identify cost impacts early, while corrective action is still possible.

Building Information Modelling

Models built to be used, not only viewed

We create accurate, coordinated, information-rich models that support design development, documentation, quantity extraction, coordination and cost management.

Because we also practise Quantity Surveying, the model and the measurable project information stay connected.

Services

Modelling

  • Architectural BIM modelling
  • Structural BIM modelling
  • BIM from 2D drawings (DWG, DXF, PDF)
  • 3D BIM from PDF / CAD
  • Family creation
  • Model updating
  • Design development support

Coordination

  • Architectural + structural coordination
  • BIM coordination
  • Clash detection
  • Level & grid coordination
  • Drawing-to-model checking
  • Model audit & quality checking

Information

  • BIM documentation
  • Views, sheets & schedules
  • Construction documentation
  • BIM quantity take-off
  • BIM-based cost planning
  • BIM + Quantity Surveying integration

Existing buildings

  • As-built BIM modelling
  • Scan-to-BIM
  • Point-cloud based modelling
  • Renovation & retrofit models
  • Existing-condition documentation

Our BIM scope covers architectural and structural modelling. MEP modelling is not part of our standard service.

From drawings to measurable information

DesignBIM modelDocumentationQuantityCostConstruction

Our workflow

  1. UnderstandProject scope, drawings, existing models, BIM requirements and intended use.
  2. Set upBIM environment, units, levels, grids, views, families and model structure.
  3. ModelArchitectural and structural elements developed to the agreed requirements.
  4. CoordinateModel reviewed for alignment between architectural and structural information.
  5. CheckQuality checks on geometry, organisation, information and documentation.
  6. ExtractSchedules and quantities taken from the model where required.
  7. DeliverModel and associated deliverables issued to the agreed scope.

Clash detection, step by step

  • Model collectionArchitectural and structural information gathered into a common environment.
  • Coordination checkAlignment of levels, grids, openings and elements reviewed.
  • Clash identificationBeam vs. wall, column vs. architectural element, structural element vs. opening, staircase and clearance conflicts.
  • Issue documentationConflicts recorded and communicated for resolution.
  • Design resolution & model updateAgreed changes carried back into the model.

Support by discipline

Architects
Modelling, design development, documentation, schedules, families, model updates and quantity extraction.
Structural consultants
Structural modelling, element schedules, architectural coordination and drawing-to-model checking.
Contractors
Construction coordination, model review, drawing comparison, quantity extraction and as-built modelling.
Developers & owners
Design review, visualisation, coordination, quantity information and cost-related analysis.

Deliverables

  • Architectural BIM model
  • Structural BIM model
  • Coordinated model
  • Families
  • BIM schedules
  • Quantity schedules
  • Construction drawings
  • Clash reports
  • Model audit reports
  • As-built model
  • Scan-to-BIM model

Common questions

Can you create a BIM model from PDF or CAD drawings?
Yes. Suitable architectural and structural PDF, DWG or DXF drawings can be used as the basis for BIM modelling.
Do you provide MEP BIM modelling?
No. Our BIM services focus on architectural and structural modelling. MEP modelling is not included in our standard scope.
Can you coordinate architectural and structural models?
Yes. We review and coordinate architectural and structural BIM information to identify relevant inconsistencies and clashes before they reach site.
Can you model an existing building?
Yes. Existing buildings can be modelled from available drawings, survey information, site measurements, photographs or point-cloud data.
Can BIM be used for Quantity Surveying?
Yes. BIM quantity extraction integrates with our Quantity Surveying services, connecting model information to measurement and BOQ workflows.

Approach

One project. Different responsibilities. One workflow.

Architects focus on design. Developers and owners focus on budget and outcome. Contractors focus on execution and measurement. We work alongside each of them to connect design, quantities, cost, BIM and construction information.

Our role is not to replace the project team. It is to strengthen the information between them.

Working with architects

You lead the design. We structure the information behind it — converting design intent into models, quantities, BOQs and cost information without compromising what you set out to build.

We support

  • Architectural BIM modelling
  • Structural BIM coordination
  • Drawing & model-based take-off
  • BOQ preparation
  • Design option cost comparison
  • Value engineering
  • Construction documentation

Sequence

  • Architectural design
  • BIM development
  • Quantity & cost information
  • Design review
  • Coordinated documentation

Working with developers & owners

Know the cost. Understand the change. Control the outcome. We establish and monitor the relationship between scope, quantity, cost and change.

We support

  • Preliminary & detailed estimates
  • Cost planning and budgeting
  • Tender documentation & evaluation
  • Contractor quotation comparison
  • Bill verification
  • Variation management
  • Cost reporting & final account

Sequence

  • Project brief
  • Scope & quantity
  • Cost plan
  • Tender and contract
  • Cost monitoring
  • Final account

Working with contractors

Measure accurately. Document clearly. Execute with confidence. We support the quantity and commercial documentation that tendering and execution depend on.

We support

  • Quantity take-off
  • BOQ preparation & checking
  • Tender quantity verification
  • Rate analysis
  • Measurement sheets
  • Running account billing
  • Variation quantities & reconciliation

Sequence

  • Drawings / BIM model
  • Quantity take-off
  • BOQ / measurement
  • Tender & execution
  • Billing
  • Quantity reconciliation

One integrated workflow

  • DesignArchitectural and structural information is developed.
  • BIMDesign information becomes a structured digital model.
  • QuantityBuilding elements are measured from drawings or the model.
  • BOQMeasured quantities are organised into a structured bill.
  • CostRates and cost information are applied.
  • TenderContractor quotations are evaluated against a common scope.
  • ConstructionQuantities, bills and variations are monitored.
  • ReconciliationBOQ quantities are compared with actual and revised quantities.
  • CompletionFinal quantities and costs are reconciled.

Why this matters

When design, quantity, cost and construction information are handled separately, discrepancies appear. A single design change travels through the whole chain:

GeometryQuantityBOQCostContractConstruction

Identifying that connection early lets a project team respond before the cost is committed.

How we engage

Project-based
A defined deliverable — a BIM model, quantity take-off, BOQ, cost estimate or tender evaluation.
Stage-based
Support through a specific stage: design, tender, construction or completion.
Ongoing
Continuous BIM, Quantity Surveying or Cost Management support as an extended part of your team.

Where practical we work inside your existing formats — your BOQ structure, measurement templates, drawing standards, BIM requirements and reporting formats — rather than imposing a new system.

Design it. Measure it. Price it. Coordinate it. Control it. Talk to us

Why Iyattva

More than measurements. More than models.

Construction decisions are connected. A change in design changes quantities; a change in quantities changes cost; a change in cost affects procurement and execution. Our focus is not to produce drawings, quantities or reports — it is to give you information you can decide with.

What sets our work apart

BIM and QS together
Most firms treat them as separate activities. We use the model to produce measurable information and Quantity Surveying methodology to verify and organise it.
Design-aware costing
A quantity is never just a number. It comes from a wall type, a structural choice, a finish or a revision — and we read it that way.
Structured measurement
Take-off, BOQ, rate analysis, measurement, billing, variations and reconciliation follow a documented process, so quantities stay clear, traceable and reviewable.
Technology with judgment
Software calculates and models generate quantities, but construction decisions need professional judgment. Where BIM quantities are used, conventional QS principles verify them.
Construction-oriented output
Quantities eventually become procurement, tender prices, bills and variations. Our deliverables are built for that, not for the page.
Independent review
An additional layer of checking on BOQs, contractor quantities, rates, running bills, variations and cost changes before commercial commitments are made.
One partner across stages
Design, tender, construction and completion handled by the same team, so project information stays connected as the project moves.
Detail, at scale
A small discrepancy at item level becomes substantial when repeated across floors, buildings and packages.

Four questions every project should be able to answer

What are we building?
BIM & documentation
How much are we building?
Quantity Surveying
What will it cost?
Cost estimation & planning
How is the project performing?
Cost control & commercial monitoring

Our difference

  • We don't just deliver numbersWe help you understand what the numbers are telling you.
  • We don't just create modelsWe make the information inside them useful.
  • We don't just prepare BOQsWe connect the BOQ back to design and forward to construction.
  • We don't just check billsWe verify the quantities and commercial basis behind them.

Flexible by design

One deliverable

  • BOQ
  • Quantity take-off
  • BIM model
  • Cost estimate
  • Tender comparison

Stage-wise

  • Design
  • Tender
  • Construction
  • Completion

Ongoing

  • BIM resource
  • QS resource
  • Cost management resource

Contact

Have drawings, a BIM model or an existing BOQ?

Tell us what stage the project is at and what you need measured, modelled or verified. We will come back with a scope and a way to work.

Reach us

Office

Ahmedabad, Gujarat, India

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