For a seller in South East London, where two similar-looking homes can attract very different levels of interest depending on street, condition and transport links, the right model is the one that gives you confidence in both the service and the final outcome.

What does a fixed-fee estate agency service mean?

With a fixed-fee model, you agree one set price for the estate agent’s work, rather than paying a percentage of the eventual sale price. That price may be payable upfront, when the property goes live, on exchange, or on completion. Those are very different arrangements, so always ask exactly when payment becomes due.

The main attraction is certainty. If you know an agent’s fee is, for example, a set amount plus VAT, you can build it into your moving budget from day one. If your home sells for more than expected, the agency fee does not rise with it.

Fixed fees can suit sellers who are confident about their property’s likely value, have a straightforward home to sell and want a clear, predictable cost. It may also appeal if you are handling parts of the process yourself, such as conducting viewings or managing buyer queries.

That said, a fixed price is not automatically the lowest overall cost. Some packages cover marketing and portal exposure but charge separately for professional photography, floorplans, virtual tours, accompanied viewings, sales progression or negotiations. Others require payment before a buyer has been found. Read the service schedule, not just the figure in the advert.

How commission works when selling a home

A commission-based fee is usually calculated as an agreed percentage of the final sale price, plus VAT. In many cases it is payable only when the sale completes. This is often described as a no sale, no fee arrangement, though the wording should be checked carefully in the agency agreement.

Because the fee rises or falls with the achieved price, commission creates a shared financial interest between seller and agent. That does not mean every commission arrangement delivers the same level of service, but it gives the agent a direct reason to pursue strong offers rather than simply secure the quickest available sale.

Commission can be particularly relevant where pricing needs careful judgement. A period house with scope to extend, a well-presented flat near Elizabeth line connections, or a family home in an in-demand SE18 or SE28 location may have more value in the right marketing, buyer database and negotiation than in a basic listing alone.

The trade-off is that the final bill is less certain. A higher sale price is usually good news, of course, but it means the commission increases too. Sellers should calculate the likely fee at a realistic valuation and at a higher figure, then compare both against the fixed-fee alternative.

Fixed fee versus commission: the questions that matter

It is easy to compare one percentage with one fixed sum. It is more useful to compare the full service behind each option. Start with the asking price advice. An ambitious valuation can be flattering, but an overpriced property may sit on the market, lose momentum and eventually need a reduction. Look for evidence that the valuation reflects recent local sales, current buyer demand and the particular strengths of your home.

Then ask who will manage the sale once the listing is live. Will an experienced local negotiator conduct viewings? Are buyers financially checked before offers are put forward? Will someone chase solicitors, mortgage brokers and the chain after an offer is accepted? Sales progression is often where a transaction is protected or allowed to drift.

Marketing quality matters too. Clear photography, an accurate floorplan, considered property details and a virtual tour can help buyers understand a home before they book. For homes receiving several enquiries, a structured viewing and follow-up process can make the difference between interest and offers.

A useful comparison is to write down what is included in each proposal, then assess the cost at three possible sale prices: the agent’s valuation, a cautious figure and an optimistic figure. Include VAT, any upfront charge, withdrawal fees, photography costs and fees for optional services. The cheapest quote should become clear only after that exercise.

Motivation is part of the calculation

The usual argument for commission is that an agent will work harder for a higher price. There is some logic in that, but it should not be the only test. The difference in commission from a modestly higher offer may be small for an agent, while the difference to your moving budget can be substantial. Professional standards, local knowledge and a willingness to negotiate properly matter just as much.

Equally, it would be unfair to assume a fixed-fee agent is not motivated. A good agent depends on recommendations, reviews and completed sales. However, if the fee has already been paid, you need to be especially clear about the promised level of contact, viewings, feedback and support should the first buyer fall through.

Ask direct questions: who will be your named contact, how often will you receive updates, and what happens if interest is slower than expected? A clear answer is worth more than vague assurances about exposure.

Watch the contract, not only the fee

Before instructing any estate agent, read the terms covering the length of the agreement, notice period and circumstances in which a fee becomes payable. A sole agency agreement usually gives one agent the exclusive right to market the property for an agreed period. A sole selling rights agreement can be broader, potentially making a fee payable even if you find the buyer yourself during the contract term.

Also check the agency’s definition of an introduced buyer. If a buyer viewed through the agent and later returns after the agreement ends, a fee may still be due within a stated period. This is not unusual, but it should be understood before you sign.

If you are considering more than one agent, be cautious. Multi-agency arrangements can increase the percentage charged and create inconsistent pricing or property details if they are not carefully managed. One committed agent with a strong marketing plan is often easier for buyers to understand.

When a fixed fee may be the better fit

A fixed fee can be a sensible choice when you want certainty, your property is easy to value, and you are comfortable doing more of the practical work. It can also work well if the proposed package genuinely includes the marketing and sales support you need, with payment due on completion rather than upfront.

It may be less attractive where your home needs careful positioning, has an unusual feature that requires explanation, or is likely to benefit from active negotiation among several buyers. In those cases, paying for experienced, hands-on representation can be worth more than saving a modest amount on the fee.

When commission may be worth paying

Commission often suits sellers who want a traditional full-service approach: local valuation advice, professional marketing, accompanied viewings, buyer qualification, offer negotiation and active progression through to completion. It can be reassuring if you prefer the agent to be paid only once your sale has completed.

It is also worth considering if a stronger sale price would materially improve your next move. Saving £1,000 on an agency fee is useful, but not if weaker presentation or negotiation costs you considerably more in the final deal.

The right decision is rarely about fixed fee versus commission in isolation. Choose the agency arrangement that is transparent about costs, realistic about price and prepared to take responsibility for the details that keep a sale moving. A clear conversation before you instruct can make the moving process far less uncertain later on.

For sellers in SE18, SE28 and SE2, where values and buyer demand can vary sharply between neighbouring streets, the best choice is usually the arrangement that gives your home focused representation and a sensible route to market. More agents do not automatically mean more buyers.

What is a sole agency agreement?

With a sole agency agreement, you appoint one estate agent to market and negotiate the sale of your property for an agreed period. That agent is responsible for preparing the listing, arranging photography and virtual tours where appropriate, handling enquiries, conducting viewings, qualifying buyers, negotiating offers and keeping the sale moving towards exchange.

A sole agency can create clear ownership of the instruction. One team knows the property, understands the reasons for your move and can give buyers consistent answers about the home, its position and the seller’s expectations. It also means you have one point of contact rather than several agents each giving a slightly different update.

The commission for a sole agency instruction is often lower than for a multi-agency arrangement. This reflects the agent having a more reliable opportunity to earn the fee if they introduce the successful buyer. In return, you should expect a committed marketing plan, regular feedback and straightforward reporting on viewings, buyer interest and next steps.

Sole agency is not always sole selling rights

These terms are often confused, and the difference matters. Under a sole agency agreement, you may not have to pay commission if you find a buyer entirely yourself without the agent’s involvement. Under sole selling rights, commission may be due even if you introduce the buyer yourself during the agreement period.

The exact wording of the contract decides this. Before signing, ask the agent to explain in plain English when a fee becomes payable, what happens if a buyer was introduced during the instruction but completes later, and whether there are withdrawal or administration charges. A clear answer at the outset prevents an expensive misunderstanding later.

What does multi agency mean?

A multi-agency agreement allows you to instruct more than one estate agent at the same time. Usually, the agent that introduces the eventual buyer receives the commission. The arrangement can feel attractive because several offices may be calling their applicant lists and promoting the property at once.

There are occasions where it can be useful. A distinctive, high-value home may suit exposure to different buyer audiences. A seller with a tightly defined deadline may also feel more comfortable testing several active channels. If agents genuinely reach separate pools of well-qualified buyers, wider representation can add value.

However, the higher multi-agency fee must be weighed against what you receive. Several agents do not necessarily create several marketing strategies. Often, the same portals show near-identical listings, photographs and descriptions, while buyers receive calls from multiple negotiators about the same property.

Sole agency versus multi agency: the practical differences

The most visible difference is fee, but the working relationship is just as significant. With sole agency, the agent has a stronger incentive to invest time in the presentation, buyer matching and negotiation because they are accountable for the instruction. With multi agency, every agent is competing to be first to register an offer, which can encourage activity but can also make the process fragmented.

A multi-agency listing can give buyers the impression that a property is difficult to sell or that the seller is under pressure, particularly if it appears repeatedly at different prices or with inconsistent details. That perception can weaken your negotiating position. Buyers may wait for a reduction rather than make their best offer.

Price control is easier with one agent. They can monitor feedback, explain whether objections are about price, condition or presentation, and recommend a considered response. When several agents are involved, you may receive conflicting advice, duplicate viewings and offers delivered without the full context of a buyer’s chain, mortgage position or timescale.

That does not make multi agency a poor choice by default. It simply requires careful management from the seller. All agents need the same guide price, accurate property information and clear instructions on viewings and offer handling. Without that discipline, more exposure can become more noise.

When a sole agency arrangement is likely to suit you

Sole agency is often the right route when you want a coordinated sale and value an agent who will take responsibility for the full process. It works particularly well when the agent has proven knowledge of the immediate area, a credible register of active buyers and a clear plan for launching your home.

It can also suit sellers who want to protect the presentation of a family home. A well-prepared listing, professional images, a considered asking price and carefully managed viewings can create early momentum. The first few weeks of marketing are valuable, so it is worth choosing an agent that will not rush the preparation or rely on a generic description.

Ask how often you will receive updates and who will conduct viewings. A named contact, honest feedback and a willingness to discuss changes to strategy are more useful than a vague promise of broad exposure.

When multi agency may be worth considering

Multi agency can be reasonable if one agent cannot demonstrate sufficient reach for your type of property or preferred buyer. It may also be an option where your home needs to appeal across more than one geographical market, or where you have a short, non-negotiable timeframe.

If you take this route, agree a consistent price and specification before any listing goes live. Check that each agent uses current photographs, correct room measurements and the same key selling points. Decide whether all viewings must be accompanied and ask for a written record of every applicant introduced.

It is also sensible to make sure each agent knows the arrangement is multi agency. Transparency reduces the risk of disputes over who introduced a buyer and helps agents focus on properly qualifying interest rather than simply claiming a lead.

Questions to ask before you sign

The right agreement should be easy to understand, not buried in small print. Before appointing an agent, establish the length of the tie-in period and notice period, the commission including VAT, the circumstances in which a fee is due, and whether any additional costs apply for marketing or withdrawal.

Then move beyond the contract. Ask how the asking price has been reached using recent local evidence, what the launch plan looks like, how buyers will be financially qualified, and how the agent will progress a sale once an offer is accepted. An agent who can explain the detail calmly is more likely to manage the pressure points well.

For a home in Plumstead, Abbey Wood, Woolwich, Charlton or the surrounding area, local judgement can be particularly valuable. Buyers may be comparing transport links, schools, green space, condition and future plans for the area as closely as they compare bedroom numbers. A good agent turns that knowledge into accurate pricing and stronger conversations with serious applicants.

Choose commitment, not just coverage

There is no universal winner in sole agency versus multi agency. The better option depends on the property, the market, the quality of the agents available and how quickly you need to move. Yet a well-run sole agency instruction often provides the stronger balance of accountability, consistent marketing and value for money.

Before you decide, request a valuation and ask each prospective agent to set out their recommendation in writing. The useful test is simple: choose the arrangement that gives your property a clear strategy, not merely the most logos in the window.