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Contractors obligations
Workmanship: as per clauses 2.3.2 that the contractor should complete work as described within relevant contract documentation
Instructions: as per 3.10 the contractor is to comply with A/CA’s instructions
Materials and Goods: they should be on par with standards and as described in relevant contract documentation. Contractor has to make sure that the materials supplied should be : 1. Fit for their purpose. The contractors judgement and skills are relied upon. 2. They should be free from any latent defects as per The Sales and goods Act 1979
Contractor’s Designed portion (CDP): if CDP is part of the works the contractor must: 1. Provide designs for it (2.2.1). 2. Comply with the A/CA’s instructions to integrate the design of the CDP (2.2.2). 3. Comply with regs 8 to 10 of The Construction (Design and Management) (CDM) Regs 2.2.3. The designs are also judged on the ‘reasonable skill and care’ test/standard/doctrine by appropriate competent professional designer such as an architect
General Obligations: 1. to carry out and complete works in a proper and workmanlike manner (clause 2.1) based on ‘The Contract Documents, the Construction phase Plan and Statutory Requirements’ failure to perform is a breach of contract.
Contractor should work demonstrating skill and care that a builder of ordinary competence would demonstrate as stated in ‘The Standard of the average competent person’ (SBC/Q/Scot 2016) clause 2.19.1
Supplier supplies good under Retention of good title clause. Employer includes tge materials in an Interim Certificate. The Employer becomes insolvent ( goes bankrupt) before paying the sub- contractor who will use the materials. Who owns the materials and why using case law. INTERIM CERTIFICATE QUESTION
Case law: CLARK CONTRACTS LTD V BURELL CO (CONSTRUCTION MANAGEMENT) LTD:
Contractor (C) sought out payment from employer (B) under the construction contract sum due in terms of the issued interim certificate
Employer argued that what the architect said is not necessary what is due and they don’t owe them any money
The court ruled against employer stating that despite the inconclusivity of the Certificate, payment was still due under the ‘Housing Grants, Construction and Regeneration Act 1996’ as the amount in the certificate was the amount due in the contract.
The interim certificate is not conclusive regarding the amount to be paid to the contractor and does not confirm the A/CA’s satisfaction with the quality of the work done or materials. Based on the case study if it was stated that they belong to a certain party within the contract it would belong to whoever it is stated within the contract. However since the supplier supplied them under The Retention of Title Clause which allows the supplier to keep their materials until they are paid back which the employer cannot do in this case.
Conclusivity of Final Certificate + difference in England and Scotland
The final certificate indicates all work and everything has been completed. It is also a certificate for payment
It suggests the end of a contract, the final amount the contractor has to be paid ( including final release of any remaining retention monies) and the A/CA’s satisfaction with works done.
It is only conclusive evidence that the quality of materials, goods or workmanship are to reasonable satisfaction of A/CA.
However, it is not conclusive evidence that the contractor complied with the contract and can be challenged in adjudication, arbitration and litigation by the employer allowing them to make claims against the contractor.
IN SCOTS LAW: it is NOT conclusive which is in line with the JCT
IN ENGLISH LAW it IS conclusive so the contractor is not held liable for any defects compared to Scotland where they could be liable for them.
Minor Works Contract circumstances and dangers inherited from the contract
Appropriate use: intended for:
Simple projects
Design-bid-build procurement system
If the employer provides either:
drawings
Specification
Work schedule defining quality and quantity of works
If contract administered by a representative ( A/CA or QS)
Can be used:
Private + local authority employers
With bills of quantities
With named specialists
Not Suitable
❌ Complex or high-risk projects
❌ Where detailed control procedures are needed
❌ Where contractor design is involved
→ Use contractor’s design version instead
Inherent dangers of using it:
Unclear designs can lead to possible disputes
Cannot be used for complex projects as it has limited provisions for risk and variations
If the contractor is involved it can cause issues with legal liability
Relies on the competence of the contract administrator. If the contract administrator is incompetent it can cause issues with functionality.
In what circumstances can a contractor legally suspend works and what are the consequences of this.
if the payee fails to honour payment as stipulated within the construction contract (HGCRA, 1996, as amended: subsection 112 (1); clause 4.13.1), the payee may suspend performance of his obligations. In this case the amount in the payment notice must be paid unless a reduced amount is indicated in a ‘pay less notice’ issued by the payer.
Payee may even suspend works if payer fails to pay the amount the payer states in the ‘pay less notice’ issued to payee after 7 days and must give a reason for wanting to suspend
If the payer fails to pay on time and in full, payeee may suspend works or part of it by giving atleast 7 days notice of intension to suspend performance
They may suspend it on the final date for payment if not paid
However, they must resume works after payer pays in full (HGCRA, 1996, amended as subsection 112(3) SBCC,2016: clause 4.14.1
Principle duties of A/CA in granting an extension of time under SBCC 2011 Standard Contract
A/CA grants EOT after contractor has forthwith ‘give notice’
In their own opinion they must judge:
If its a relevant event( Clause 2.28.1.1)
If the relevant Completion Date is likely to be extended (clause 2.28.1.2)
A/CA is contractually obliged to award EOT that in his own opinion is ‘fair and reasonable’ considering the facts above
To get this grated the contractor must send:
a notice
details (particulars) of the delay
as required under clause 2.27
Contractual problems with large variations or just variations in general.
Change in Fundamental nature of the works:
regarding a change of conditions for the works and a substantial change and to be treated as a variation under clause 5.9.1
if it is a very large variation it will raise the issue of whether it is a valid variation or not
changes in the scope of the works result in major adjustments in price
A/CA has power to issue variation under 3.15.1
if the variation invalidates the contract:
3.14.5 states that no variation is to vitiate the main contract
this means even large variations do not automatically cancel the contract
this can however create tension between the contract allowing it versus the variation being too expensive in practice
Employer’s rights to instruct additional work:
employer is allowed to require particular extra works to be executed under 5.1.1.1
contractor is generally obliged to carry out the variations
contractor may resist if the works are far beyond original scope or if it changes the nature of the project
Valuation Difficulties:
If the work is not similar to the bill of quantities of the original works then it can be valued at a fair rate and prices according to 5.6.1.3
The value may be agreed or determined by the QS according to 5.2.1.1
the new elements are not similar to original works so leads to difficulty in pricing, valuation disputes and reliance on QS judgement.
Risk of dispute or renewal:
due to scale of variation contract may argue it outside original bargain and could either refuse to carry out works and claim variation is invalid
creates a risk of repudiation leading to contract termination and legal claims
Main Certificates that can be issued under the SBCC 2011 Standard Building Contract and explain their significance.
Interim Certificates clause 4.9:
progress certificate and used for payment to contractor for work done to date
issued by A/CA within 5 days after each due date
Sum due for contactor must be calculated according to 4.14 (Gross Valuation) and 4.15 (Deductions) and how the sum was calculated (4.9.1)
QS works out how much contractor should be paid if A/CA tells them
not conclusive and doesn’t confirm A/CA’s satisfaction with the quality of the works and materials
Practical Completion Certificate of Works 2.30.1 and Sectional Completion Certificate(s) of a section(s) (2.30.2):
Issued when A/CA decides works/section has achieved practical completion
contractor has complied satisfactorily with clause 2.40 (As-Built drawings) and 3.23 ( Applicable CDM regulations) regarding supply of documents and information
NON completion certificates (clause 2.31):
to be issued by A/CA indicating contractor failed to complete the works or a section by relevant completion date
sets a new completion date which cancels any certificate that was issued prior and A/CA may issue additional certificates if necessary
this is to be issued first or else employer cannot charge for liquidated damages
Certificate of Making Good (clause 2.39):
certificate for defects which confirms defects are rectified
issued by A/CA when they are satisfied with the defects specified in ‘a schedule of defects’ which is delivered to the contractor as an instruction no later than 14 days after the expiry date of that rectification period has been made good (clause 2.38)
Final Certificate (clasues 1.9 and 4.26):
issued at the end of the works or a section of works
suggest the end of a contract and the final amount to be paid to contractor ( including final release of remaining half of retention monies)
inconclusive because contractor can be challenged in adjudication, arbitration and litigation, allowing employer to make claims against them
Late certificate applications. What are the contractual consequences?
The Interim certificate may be invalid as it is applied for later rather than 5 days before.
A/CA Payment Notice is late:
payment notice must be due 5 days before the due date
the payment becomes invalid/late
Contractor’s application may not become the ‘notified sum’:
invalid and late payment notice = contractor’s default notice becomes the notified sum.
this is only if the application is valid. this can create disputed over validity of any notifies sum
Employer will have to pay the notified sum by the final date for payment
Late Payment by employer:
date is after final date of payment
Employer has to pay as its after the notice (7 day notice)
employer has breached the contract
Contractor may suspend works due to late payment and can claim loss and/ or expenses under clause 4.13.3 as well as charge interest for late payment.
Contractor has to comply with the instructions issued by A/CA. to what extent are the exceptions to this obligation?
5.1.2 Instructions relating to variations such as:
access to site or use of any specific parts of site
limitations of working space and hours
execution or completion of the works in any specific order
contractor may notify them of their reasonable objection
If the A/CA asks for a variation which under clause 5.3.1 requires the contractor to provide a variation quotation:
the variation cannot be carried out until the A/CA has either: a) a confirmed acceptance b) further instruction under clause 5.3.2 (3.10.2)
3.10.3 if the compliance would adversely affect:
the efficiency of design of the CDP
his compliance with applicable CDM regulations
What are the consequences of A/CA forming the opinion that practical completion of the works has been achieved?
Its an official confirmation that the works are completed and that the contractor has complied satisfactorily with clauses 2.40 and 3.23 regarding supply of documents and information
Contractor is no longer liable for any liquidated damages
signifies the beginning of rectification period meaning contractor must fix any defects that appear
50% of retention monies are released to contractor until defects are fixed
transfer of possession of building to employer
risk and insurance passed to employer (responsibility)
end of contractual obligation for contractor
What is the purpose and merit of retention in a building contract? Is there an alternative?
Acts as security for employer. it ensures contractor:
completes work properly
returns to fix defects
and provides financial incentives for:
good workmanships
completing outstanding works
Merit of it:
protection for employer: money is held back in case if defects are not fixed and contractor fails to return to fix them
Encourages performance: contractor is motivated to complete works fully and rectify defects promptly
Controlled and transparent system: A/CA must issue a statement showing retention deduction before each interim certificate. It ensures clarity in payments
Alternative To Retention:
retention bond: bank or insurer guarantees the retention amount. Contractor gets full payment and employer still gets security.
Merits of retention bond: improves contractor cash flow and still protects employer. reduces financial strain on contractor.
Damage to property. How could this be covered by insurance and what limitations may apply?
It can be covered with a Public Liability Insurance:
covers damages to neighbouring property
injury to third part
cracks and damages would normally be covered under this
Main policy:
if it happened during the policy period it is covered and claims can be made later due to no need to maintain insurance after project completion
Limitations:
must prove pile drive cause cracks
may exclude poor workmanship and defective methods
larger damages may exceed cover (maximum pay out limits)
contractor must specify who provides insurance unclear specification may cause disputes to arise
insured party must pay part of the loss
Outline the principles behind the Valuation Rules of the SBCC 2011 Standard Building Contract.
1. Purpose of Valuation Rules
To fairly calculate the amount due to the contractor
Used for:
interim payments
variations
final account
👉 Based on the idea of paying for the value of work properly done
🔹 2. Gross Valuation Principle (Core Rule)
From your notes:
👉 Gross Valuation = total additions − deductions (clause 4.14)
✔ Additions include:
Work properly executed (including variations, provisional sums, approximate quantities)
Materials on site (if protected and not yet installed)
Costs such as:
loss and expense
suspension costs
other contractor-incurred costs
👉 Principle:
Contractor is paid for all value added to the project
🔹 3. Deduction Principle
From the gross valuation, deduct:
Retention
Previous payments
👉 Ensures:
No overpayment
Employer retains security
🔹 4. Retention Principle
From your notes:
A portion of payment is held back as security
Employer holds it:
“as trustee for the Contractor”
👉 Principle:
Protects Employer while recognising contractor’s entitlement
🔹 5. Fair Valuation of Variations
Variations must be valued:
using existing contract rates where possible
or fair rates and prices if not comparable
👉 Principle:
Ensure fair payment for changed work
🔹 6. Role of the Quantity Surveyor (QS)
QS prepares interim valuations
Determines value of:
work done
variations
materials
👉 Principle:
Independent, professional assessment of value
🔹 7. Transparency and Certification
From your notes:
A/CA must:
issue statements showing:
retention deducted
amounts due
👉 Principle:
Clear and transparent payment process
🔹 8. Inclusion of Additional Costs
From your notes:
Contractor may recover:
loss and/or expense
costs of suspension
👉 Principle:
Contractor is compensated for extra costs caused by events beyond their control
🔹 9. Stage Payment Principle
Payments made at intervals (interim payments)
👉 Principle:
Maintains contractor cash flow during the project
What adjustments should be made to the Contract Sum on completion of the Works? | |
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. Final Account Adjustment (Core Principle)
The Contract Sum is recalculated at completion to reflect the true final cost of the works
This is done through the Final Account / Final Certificate process
🔹 2. Adjustment for Variations
Add or deduct the value of:
instructed variations
changes to quantities (e.g. provisional sums, approximate quantities)
👉 Based on:
agreed rates or
fair rates and prices
🔹 3. Adjustment for Loss and Expense
From your notes:
Include:
loss and/or expense (clause 4.13.3)
costs due to disruption or delay caused by employer-related events
👉 Ensures contractor is compensated fairly
🔹 4. Adjustment for Materials and Work Value
From your Gross Valuation notes:
Include value of:
work properly executed
materials on site
👉 Reflects actual value delivered
🔹 5. Deduction of Retention
Retention previously deducted is adjusted:
✔ Half released at Practical Completion
✔ Remaining half released after defects are made good
👉 Final account includes:
release of remaining retention
🔹 6. Adjustment for Liquidated Damages (if applicable)
If contractor completed late:
Deduct liquidated damages
Only if:
Non-Completion Certificate issued
Proper notice given
🔹 7. Adjustment for Previous Payments
Deduct all:
interim payments already made
👉 Prevents overpayment
🔹 8. Other Adjustments
May include:
Costs of:
suspension (4.13.2)
Any agreed:
claims
corrections or omissions
🔹 9. Final Certificate
Issued by A/CA after final account agreed
👉 Confirms:
final adjusted Contract Sum
amount finally due between parties
What is the purpose of Contractor’s insurance of liability of Employer under clause 6.5 and how important are the exclusions? |
1. Purpose of the Insurance
👉 Clause 6.5 requires the Contractor to insure the Employer against certain liabilities to third parties
✔ Covers liability for:
Injury or death to third parties
Damage to third-party property
👉 Where this arises from carrying out the works
✔ Key purpose:
Protects the Employer from being financially liable
Even though the Contractor is carrying out the work
👉 Ensures:
Claims are covered by insurance, not directly by the Employer
🔹 2. Why this is needed
Construction works create risks to:
neighbours
the public
Employer could be legally liable as:
site owner
👉 This insurance shifts that risk to:
the Contractor’s insurer
🔹 3. Importance of Exclusions
👉 Exclusions are very important because they define what is NOT covered
❗ Common exclusions (key exam points)
Damage to:
the works themselves
the site and materials
👉 (covered by CAR insurance instead)
Injury to:
the Contractor’s employees
👉 (covered by employer’s liability insurance)
Damage caused by:
design defects
negligence in design
Certain high-risk activities:
e.g. vibration, subsidence (sometimes excluded or limited)
👉 This is very relevant to scenarios like:
piling causing cracks in nearby buildings
🔹 4. Why exclusions matter ✔ They create gaps in cover
Not all risks are insured
Parties must rely on:
other insurances
or bear the risk themselves
✔ Risk allocation issue
If something is excluded:
Employer may become personally liable
Contractor may also face:
uninsured liability
✔ Potential for disputes
Arguments over:
whether damage is covered
who is responsible
A Liquidated Damages clause in a building contract protects the interests of both the Employer and the Contractor. Discuss.
1. What are Liquidated Damages (LDs)?
Pre-agreed sum payable for delay
Applies when contractor fails to complete on time
Employer:
👉 does NOT need to prove actual loss
🔹 2. How LDs Protect the Employer ✔ A. Certainty of compensation
Employer receives fixed amount for delay
Avoids:
complex claims
proving actual loss
✔ B. Simplicity and efficiency
No need for:
lengthy legal arguments
Payment can be:
deducted or recovered as a debt
✔ C. Cash flow protection
Employer can:
withhold or deduct LDs from payments due
✔ D. Encourages timely completion
Contractor is financially motivated to:
finish on time
🔹 3. Strict Contractual Safeguards (Important Protection Mechanism)
From your notes, Employer must follow strict rules:
✔ A/CA must issue:
Non-Completion Certificate (2.32.1.1)
✔ Employer must notify Contractor:
they may deduct LDs (2.32.1.2)
✔ Notice must state:
rate of LDs
period of delay
intention to:
recover as debt OR
deduct from payments (2.32.2)
👉 If these steps are NOT followed:
Employer may lose the right to claim LDs
🔹 4. How LDs Protect the Contractor ✔ A. Certainty and risk limitation
Contractor knows:
maximum financial liability in advance
👉 Prevents:
unlimited or unpredictable damages claims
✔ B. No exposure to actual loss claims
Employer cannot claim:
higher, unliquidated damages
👉 Even if actual loss is greater
✔ C. Protection through procedures
Employer must:
strictly follow contract
👉 Failure = Contractor avoids liability
✔ D. Adjustment if Completion Date changes
From your notes:
If Extension of Time (EOT) granted:
LDs already paid must be refunded (2.32.3)
👉 Ensures fairness
✔ E. Prevents unfair deductions
Employer must:
give clear notice
👉 Contractor is:
aware of deductions
able to challenge
🔹 5. Balanced Risk Allocation
LDs strike a balance between:
Employer’s need for compensation
Contractor’s need for certainty
🔹 6. Ongoing Validity of Notice
From your notes:
Once Employer gives notice:
it remains valid unless withdrawn (2.32.4)
👉 Protects Employer administratively
👉 But also gives Contractor clarity
🔹 7. Limitations / Potential Issues ❗ A. Must be a genuine pre-estimate
If excessive → may be unenforceable penalty
❗ B. Administrative burden
Employer must strictly:
follow procedures
❗ C. May not reflect actual loss
Could be:
too high or too low
Regular progress of the Works has been materially affected by substantial variations. What steps must the Contractor take to secure payment of Loss and/or Expense? What might be included in the payment?
1. When does Loss and/or Expense arise?
Occurs where:
regular progress of the works is materially affected
In this case:
substantial variations are the cause
👉 Variations are a Relevant Matter, so contractor may claim loss and/or expense
🔹 2. Steps the Contractor Must Take ✔ A. Give Notice
Contractor must:
notify the A/CA that progress has been affected
👉 This is essential to:
trigger entitlement to loss and expense
✔ B. Provide Details / Particulars
Contractor must submit:
details of the loss and/or expense incurred
👉 Includes:
evidence of additional cost
explanation of how variations caused disruption
✔ C. Demonstrate Causation
Must show:
variations → disruption → financial loss
👉 Without this:
claim may fail
✔ D. A/CA Assessment
A/CA must:
ascertain the amount of loss and/or expense
From your notes:
included in valuation under:
👉 clause 4.13.3
✔ E. Inclusion in Interim Payments
Once assessed:
added into interim valuations
👉 Paid progressively, not just at the end
🔹 3. What May Be Included in the Payment
From your notes (Gross Valuation + Loss & Expense):
✔ A. Direct Loss and Expense
Costs arising from:
disruption
delay caused by variations
✔ B. Additional Site Costs
Prolongation costs such as:
site staff
supervision
plant
✔ C. Loss of Productivity
Inefficiencies caused by:
changes to sequence of work
reworking
✔ D. Suspension-Related Costs
From your notes:
👉 reasonable costs of suspension (4.13.2)
✔ E. Other Contractor Costs
From your notes:
👉 “payments made or costs incurred by the Contractor” (4.14.2)
✔ F. Included in Gross Valuation
Loss and expense forms part of:
👉 Gross Valuation (additions)
🔹 4. Key Principles
Contractor is:
reimbursed for actual loss caused by employer-related events
Payment is:
assessed fairly
included in interim certificates
Contractors are increasingly promoting the use of Retention Bonds instead of normal Retention. Explain the advantages and disadvantages of these two approaches.
1. What is Retention?
A percentage of each interim payment is withheld by the Employer
Held until:
Practical Completion (partial release)
End of defects period (final release)
👉 Purpose:
Security for:
defective work
contractor non-performance
🔹 2. Advantages of Retention (Employer’s perspective) ✔ Strong security
Employer physically holds cash
Easy to use if:
defects not rectified
✔ Simple mechanism
Automatically deducted from payments
No need for third-party involvement
3. Disadvantages of Retention
❗ A. Cash flow pressure (key point from your notes)
Reduces contractor’s:
working capital
Affects:
subcontractors and supply chain
❗ B. Perceived unfairness
Employer:
may earn interest on retention
Contractor:
does not benefit
4. What is a Retention Bond?
A guarantee (usually from a bank or insurer)
Replaces cash retention
👉 Employer gets:
security without withholding money
🔹 5. Advantages of Retention Bonds ✔ A. Improved contractor cash flow (from your notes)
Contractor receives:
full interim payments
Better financial stability
✔ B. Supply chain benefits
Subcontractors:
paid more promptly
Reduces financial strain
6. Disadvantages of Retention Bonds ❗ A. Cost to contractor
Contractor must:
pay for bond (premium)
❗ B. Less immediate access for Employer
Employer must:
claim under bond
May involve:
legal or procedural steps
The grounds upon which the Employer and the Contractor may terminate the employment of the Contractor under the Standard Building Contract are entirely different. Why should this be the case? |
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1. Core Reason: Different Roles and Risks
Employer and Contractor have:
different responsibilities
different financial and project risks
👉 Therefore:
termination rights are intentionally different (not equal)
🔹 2. Employer’s Right to Terminate (Broader and Stronger) ✔ Why broader?
Employer:
funds the project
bears overall risk if works fail
👉 Needs protection if Contractor:
defaults
delays
becomes insolvent
🔹 3. Consequences of Termination (Shows Why Employer Needs Strong Rights)
From your notes, if Contractor is terminated:
✔ A. Employer can take over the works
Employer may:
employ others to complete the works
complete any Contractor’s Designed Portion (CDP)
👉 Ensures:
project can continue without major delay
✔ B. Defects can be completed by others
Employer can:
arrange for defects to be made good during Rectification Period
✔ C. Contractor must clear the site
Contractor must:
remove:
plant
equipment
temporary buildings
materials
👉 Prevents:
obstruction to completion
✔ D. Contractor must provide design documents
Where CDP applies:
Contractor must give:
design documents free of charge
👉 Allows:
continuity of design and construction
✔ E. Assignment of subcontracts/supply agreements
Contractor must:
assign benefit of:
material supply contracts
subcontract works
👉 So Employer can:
step into Contractor’s position
✔ F. Financial consequences (very important)
From earlier notes:
❗ No further payment becomes due (8.7.3)
Employer may:
withhold sums already due
Final account includes:
Employer’s completion costs
payments already made
original contract value
👉 Outcome:
Contractor may owe money to Employer
🔹 4. Contractor’s Right to Terminate (More Limited) ✔ Why narrower?
Contractor’s key risk:
non-payment
👉 Rights focus on:
failure to pay
Employer default
✔ Reason for limitation
Prevents Contractor from:
abandoning the project easily
Protects:
project continuity
🔹 5. Risk Allocation Principle
Employer protected against:
non-performance
delay
insolvency
Contractor protected against:
non-payment
👉 Different risks = different rights
🔹 6. Commercial Justification
Construction projects require:
continuity
certainty
👉 Employer must be able to:
quickly replace Contractor
👉 Contractor must not:
terminate lightly
🔹 7. Balance and Fairness
Although unequal, the system is:
commercially balanced
👉 Because:
Employer gets:
strong completion rights
Contractor gets:
payment protection