Fixed price suits work with a clear, repeatable scope, such as a lawn cut, a fence repair or a defined patio installation. Hourly billing suits open-ended or diagnostic work where nobody can honestly predict how long the job will take, such as storm damage or a fault that needs investigating first. The real trade-off is risk: fixed price shifts scope risk onto the provider, while hourly keeps it with the client. Get the decision criteria and worked examples below.
TL;DR:
- Fixed price works best for clearly defined, repeatable jobs like lawn mowing or fence repair, where scope and cost are predictable upfront.
- Hourly billing is suitable for open-ended, diagnostic, or unpredictable tasks such as storm damage assessment or complex repairs.
- Providers should include a detailed scope, change-order process, and payment schedule in written contracts to prevent disputes.
- Calculating a fair rate involves adding wages, overheads, and profit margin, then dividing by estimated billable hours for accuracy.
- Hybrid models combining fixed price and hourly billing are common for larger projects or jobs with both known and unknown scopes.
Table of Contents
- What is the difference between fixed price and hourly?
- What are the pros and cons of each model?
- When should you choose fixed price over hourly?
- How do you calculate an hourly rate or a fixed price?
- What contract clauses protect against disputes?
- Are hybrid pricing models worth considering?
- How does this work in practice for property services?
- How LookDeVis prices property work
- Get a clear price for your garden or property project
- Sources
- FAQ
What is the difference between fixed price and hourly?
A fixed-price contract sets one agreed sum for a defined piece of work, regardless of how many hours it actually takes. An hourly (or time and materials) contract bills for actual hours worked, usually with an agreed rate and some estimate of likely duration. Upwork's guidance frames this well: fixed price fits clearly scoped projects and gives clients predictable costs, while hourly suits work that is still evolving or hard to define upfront.
The mechanics differ in practice, not just in theory:
- Fixed price: one number, agreed before work starts, tied to a defined scope and specification.
- Hourly: a rate per hour (or day), billed against logged time, often with a rough estimate of total hours.
- Best-fit projects for fixed price: lawn mowing, hedge trimming, a fence panel replacement, a standard patio of known dimensions.
- Best-fit projects for hourly: emergency tree work, unexplained damp, an overgrown garden of unknown depth, diagnostic plumbing or electrical faults.
- Who carries the risk: the provider absorbs overruns under fixed price; the client absorbs them under hourly.
If you already know exactly what needs doing, ask for a fixed price. If nobody can say for certain what the job involves until someone is on site, hourly (or a diagnostic-first hybrid) protects both sides.
What are the pros and cons of each model?
Fixed-price contracts reward efficiency. A flat-rate approach lets a faster, more experienced team keep more margin on repeatable jobs, because the client pays for the outcome, not the clock. That efficiency only works if the scope was properly assessed beforehand. Undercooked scoping is where fixed price goes wrong.
- Fixed-price advantages: predictable budgeting for the client, higher margin potential for an efficient provider, no disputes over hours logged.
- Fixed-price drawbacks: requires detailed scoping before quoting, leaves the provider carrying the cost if unexpected problems appear (a hidden root system, buried rubble under a patio base), and tempts some providers to cut corners on quality to protect margin.
- Hourly advantages: fair reflection of genuinely unpredictable work, no risk of the provider under quoting and then rushing the job.
- Hourly drawbacks: the client can't budget precisely in advance, oversight and time tracking become necessary, and some clients feel uneasy without a ceiling on cost.
Pro Tip: If a provider quotes hourly with no estimate at all of likely total hours, ask for one anyway. A reputable trader can usually give a realistic range even on diagnostic work, even if the final figure isn't fixed.
Behaviourally, fixed price tends to keep the relationship cooperative, since both sides know the number from day one. Hourly billing needs more communication, because the client naturally wants updates on where the hours are going.
When should you choose fixed price over hourly?
Run through a short checklist before committing to either model:
- Is the scope fully defined? If yes, fixed price. If the answer involves "it depends what we find", lean hourly or hybrid.
- Is the job repeatable? Standard tasks a provider has quoted dozens of times before (turfing a known square metreage, a like-for-like fence run) price well as fixed jobs.
- How much unknown risk is there? Hidden damage, unclear ground conditions, or storm-affected trees push firmly towards hourly, at least for the initial assessment.
- What's the timeline? Short, one-off jobs suit fixed price. Long, evolving projects with changing requirements suit hourly or milestone-based hybrids.
- What's the client's risk tolerance? Some clients would rather pay slightly more for budget certainty than save money with an open-ended hourly arrangement.
A few if/then shortcuts make this concrete. A single hedge trim on a known boundary length: fixed price. A full garden clearance where no one has seen how deep the overgrowth goes: hourly for the first visit, then a fixed quote once the scope is visible. A multi-week landscaping project with agreed phases: fixed price per phase, so change requests get priced individually rather than blowing up one lump sum.
Relationship length also matters. A landlord using the same contractor for years might accept hourly billing readily, because trust has already been built. A first-time client meeting a provider through a one-off enquiry usually wants the certainty of fixed price, even if it costs slightly more.
Larger projects tend to combine both models in phases rather than picking one exclusively. Adeltium's contractor pricing guidance points to pricebooks and hybrid billing as the practical pattern service businesses converge on once they've quoted enough jobs to know where the risk actually sits.
How do you calculate an hourly rate or a fixed price?
Start with the fully loaded hourly rate, not just wages. Add labour cost, overheads (van, fuel, insurance, equipment depreciation, admin time) and target profit margin, then divide by billable hours in a year. A provider paying themselves £25 an hour but forgetting fuel, insurance and non-billable admin time will underprice every fixed quote built from that number.
- Calculate the fully loaded hourly rate (wages + overheads + margin, divided by billable hours).
- Estimate hours for the job based on past comparable work.
- Multiply hours by the loaded rate to get a baseline fixed price.
- Add contingency, typically for unpredictable elements like ground conditions or access difficulty.
- Set a minimum charge so short jobs still cover the travel and setup cost.
- Cap the estimate if quoting hourly, so the client has a not-to-exceed ceiling.
Prices here are indicative only and vary by property, access and materials; always confirm against a written quote.
What contract clauses protect against disputes?
A written scope of work is the single most useful document either side can insist on, whatever the pricing model. It should describe exactly what's included, what happens if extra work is found, and how payment is staged.
- Scope statement: what's included, what's explicitly excluded.
- Change-order process: how additional work gets priced and approved before it starts.
- Milestone acceptance: for phased work, sign-off points before the next stage begins.
- Payment schedule: deposit, interim payments, final balance on completion.
- Insurance and liability notes: confirmation the provider carries appropriate cover, referenced in LookDeVis's own insurance and compliance standards.
- Time logs and weekly approvals: for hourly work, agree how hours get recorded and reviewed, not just billed at the end.
Pro Tip: Treat a vague quote as a warning sign. "Approximately £X depending on the job" with no scope attached usually means the provider hasn't assessed the site properly, and the final bill will drift.
Are hybrid pricing models worth considering?
Hybrid pricing is often the sensible middle ground, and it's how most established property-service businesses actually operate day to day. A diagnostic fee followed by a fixed quote works well for jobs where the first visit is really an assessment. Time and materials with a not-to-exceed cap gives the client a ceiling while still paying fairly for genuinely unpredictable work. Fixed pricing for the defined elements of a job, combined with hourly billing for anything discovered once work is underway, suits larger projects with some known and some unknown scope.
- Diagnostic fee, then a fixed quote once the full scope is visible.
- Time and materials with an agreed cap, so the client knows the maximum exposure.
- Fixed price for defined phases, hourly for anything found once work starts.
Document the transition point clearly, so both sides agree exactly when "diagnostic" ends and "fixed quote" begins.
How does this work in practice for property services?
A small garden tidy with a known lawn size and hedge length prices cleanly as a fixed job, often with a minimum charge to cover travel and setup on shorter visits. A multi-day landscaping project, such as a new patio with turfing and planting, usually works best as a phased fixed price, agreed stage by stage as the landscaping scope firms up. Emergency or diagnostic situations, like assessing storm damage to a tree, suit an hourly rate with a cap until the full picture is clear, similar to the diagnostic-fee approach used in home HVAC services.
- Small maintenance jobs: fixed or minimum-fee pricing, covering overheads on short visits.
- Multi-day landscaping: phased fixed pricing plus hourly for anything genuinely unforeseen.
- Emergency assessments: hourly with a capped ceiling, converting to a fixed quote once scope is confirmed.
- Ongoing garden maintenance: recurring fixed-rate visits, agreed once frequency and scope are set.
A documented change-order process, referenced against a written pricebook, keeps both figures honest whichever model applies.
How LookDeVis prices property work
We build most quotes from a pricebook: standard prices for standard tasks, reviewed against the actual property before confirming. Minimum fees apply to short jobs so a quick visit still covers travel and setup fairly. Where scope genuinely can't be known until we're on site, such as storm damage or hidden ground conditions, we agree an hourly basis with a cap first, then convert to a fixed figure once the picture is clear. Every change to the original scope gets documented before it's actioned, so nobody is surprised by the final invoice. Request a free quote to see which basis fits your job.
— Roman
Get a clear price for your garden or property project
Choosing between fixed price and hourly shouldn't feel like a gamble, and with Lookdevisservices it doesn't have to. We quote fixed prices for clearly scoped garden and landscaping work across Greater London, and we're upfront about when a job genuinely needs an hourly basis with a cap, rather than guessing and hoping the number holds.
Our teams are insured, and pricing runs off a consistent pricebook rather than an on-the-day guess, so a lawn tidy in Acton or a full patio and turfing project elsewhere in London gets priced on the same fair basis. If you're weighing up a gardening service or a larger landscaping job, tell us the scope and we'll confirm which pricing model actually fits, then send a written quote before anything starts. Request your free quote today and get a number you can plan around.
Sources
- Fixed price vs hourly rate — Upwork resources
- Flat-rate vs hourly — ServiceTitan blog
- Flat rate vs hourly: how to price contractor services — Adeltium
FAQ
What are the disadvantages of fixed-price contracts?
Fixed price requires accurate scoping before work starts, and the provider carries the cost if unexpected problems, like hidden damage or difficult access, push the job beyond the original estimate.
What does "fixed price" mean?
A fixed price is one agreed total for a clearly defined piece of work, paid regardless of exactly how many hours the job takes to complete.
Which is better, fixed price or hourly (T&M)?
Neither is universally better. Upwork's guidance notes fixed price suits well-defined, repeatable scope, while hourly (time and materials) suits open-ended or diagnostic work where the scope can't be pinned down in advance.
How do you calculate a fair hourly rate?
Add wages, overheads such as insurance, fuel and equipment, and a target profit margin, then divide by realistic billable hours per year to get a fully loaded rate rather than just a wage figure.
Does LookDeVis offer fixed-price or hourly quotes?
LookDeVis quotes fixed prices for clearly scoped gardening, landscaping and property work, and moves to an hourly basis with an agreed cap only where the scope genuinely can't be confirmed until the job is underway.
Prices, timescales and information provided in this article are for general guidance and may vary depending on the property, site conditions, materials and scope of work. Please contact LookDeVis Services for an individual assessment and quotation. Where regulatory, planning or legal requirements apply, appropriate professional advice should be obtained.