Property Development Project Management: The Complete Phase-by-Phase Checklist

Why property development projects go wrong

The majority of development projects that run over budget or over programme don't do so because of one catastrophic event — they drift off course gradually, through a combination of scope creep, poor tracking, delayed decisions, and insufficient contingency. Good project management isn't about avoiding problems; it's about identifying them early enough to respond before they become critical.

Phase 1: Pre-acquisition

Project management starts before you buy. Before exchanging on any development property:

• Complete a full financial appraisal with all costs modelled (use a calculator that handles SDLT, finance costs, and contingency correctly)
• Carry out at least a preliminary structural survey — red flags here should either be reflected in the price or could kill the deal entirely
• Check planning history on the council's planning portal — outstanding conditions or enforcement notices can significantly delay or restrict your scheme
• Confirm utilities availability and identify any upgrade requirements
• Assess access for plant and material delivery — tight access can add significant cost
• Identify Party Wall obligations and neighbours
• Legal searches — drainage, planning, local land charges, environmental

Phase 2: Exchange and Pre-planning

Once you've exchanged, the clock starts. Your holding costs begin the day you exchange (SDLT is due within 14 days of completion; your finance costs start from drawdown). Move quickly:

• Appoint your professional team — architect, structural engineer, planning consultant if required
• Commission any outstanding surveys (topographic, ground investigation if new build)
• Start design work immediately — planning applications take time
• Serve Party Wall notices (if needed) — parties have 14 days to respond/dissent, and disputes can add months
• Get initial quotes from main contractors

Phase 3: Planning

For permitted development projects, you may not need planning permission — but always check with a planning consultant before relying on PD rights. For full planning applications:

• Submit application as early as possible — standard determination period is 8 weeks for householder and minor applications
• Maintain contact with the case officer — unreturned calls can add weeks
• Address objections proactively — agree amendments early if required
• Once consent is granted, check and discharge pre-commencement conditions before starting work
• Consider using a planning consultant for any scheme with material planning issues — their fee is trivial vs. the risk of a refused consent

Phase 4: Contractor selection and contract

Don't start on site without a proper contract:

• Get at least three quotes — one won't tell you if the price is reasonable, two will always confuse you, three will give you a market view
• Use a JCT contract (Minor Works or Intermediate, depending on scale) — never rely on a "heads of terms" or a one-page quote as your contract
• Agree a detailed specification and drawings before signing — change orders (variations) are where costs escalate
• Agree a payment schedule (stage payments or interim valuations) and agree the retention amount (typically 3–5%)
• Confirm contractor's insurance: public liability (minimum £2m), employer's liability, and contract works all-risk insurance
• Check contractor's CIS status and register with HMRC as a contractor if you haven't already

Phase 5: Site set-up and mobilisation

• Order a skip permit if required for any skips on the highway
• Set up site security — hoarding, locks, lighting
• Confirm site insurance is in place (contract works / public liability)
• Building control application and site start notification
• Order materials with long lead times early (windows, doors, specialist items)
• Set up your project management system — programme, budget tracker, communication log

Phase 6: Construction

This is where the most time, money, and management attention goes. The key disciplines are:

Programme management

• Hold a weekly site meeting — walking the site, reviewing progress against programme, flagging issues
• Track actual vs. planned progress weekly — don't let slippage accumulate unnoticed
• Issue a simple weekly progress report to your finance team and anyone else with a financial interest

Cost management

• Process every invoice promptly — disputes held over create risk and damage contractor relationships
• Track every invoice against your budget line items
• Flag any overspends in any category immediately — don't wait until the end of the project to discover you've overspent on groundworks
• Log variations in writing at the time — don't rely on memory or verbal agreements

Quality control

• Agree inspection hold points with your building control officer
• Use your architect or project manager for regular quality inspections — getting issues fixed during construction is infinitely cheaper than after practical completion
• Maintain a snagging list from day one — don't leave it until the end

Phase 7: Practical completion and handover

• Final walkthrough and snagging — issue a comprehensive snagging list before certifying practical completion
• Collect all required certificates: gas safe, NICEIC electrical, EPC, building control completion certificate
• Collect warranties: structural warranty (if new build), FENSA/CERTASS for windows, manufacturer warranties for systems
• Photograph every room at completion — essential for deposit protection if renting, and good practice even if selling
• Release the appropriate retention — typically 50% at practical completion, 50% after the defects period (usually 6–12 months)

Phase 8: Sales and exit

• Instruct an estate agent early — ideally before completion, so you can start marketing in the final phase of the build
• Professional photography and floor plans as soon as the property is presentable
• Instruct your solicitor for the sale — this should be someone other than the purchase solicitor to avoid conflicts
• Repay development finance promptly on completion — exit fee is typically charged on the repayment date, not on completion of the property sale

Common project management mistakes

1. No written programme. If it's not written down, it doesn't exist. A simple Excel Gantt chart is better than nothing.
2. Not tracking budget vs. actuals weekly. Problems don't announce themselves — they accumulate silently until they become a crisis.
3. Verbal variation agreements. Always confirm variations in writing — even a WhatsApp message is better than nothing.
4. Skipping the snagging process. Practical completion is when your leverage over the contractor is highest. Use it.
5. Underestimating planning timescales. 8 weeks is the target — it's rarely the reality. Build in at least 12–16 weeks for any scheme with material planning issues.