Are you wondering whether your selling or buying project would benefit from having outdoor space such as a garden, terrace, outbuildings or a swimming pool?
Should you invest in improving an outdoor area before putting your property on the market, and what return on investment can you expect?
A house with a garden remains a key criterion for many buyers in 2026. A terrace, balcony, large plot of land or swimming pool can influence both property value and rental profitability.
For a precise valuation and local support, contact your advisor and request a house valuation with a garden from Optimhome — Get a free house valuation with a garden.
Why does a garden increase the value of a house?
A garden extends the living space. It offers a variety of uses: leisure, a vegetable patch, a children’s area or an outdoor office for remote workers.
The added value combines both practical and emotional elements. In practical terms, there is expansion potential such as buildable surface area and footprint, along with useful features like parking or a garage.
At the same time, perception also matters: garden privacy, lack of overlooking neighbors and the quality of landscaping all increase appeal.
The factors that moderate the effect include garden size in square meters, exposure, with a south-facing orientation being especially valued, sunlight, maintenance condition and the presence of mature trees.
As an indication, the national range often varies between +5% and +20% in value depending on the context. A small, undeveloped garden adds around +5%. A well-maintained garden adds +10–15%. A large landscaped plot in a high-demand area can exceed +15–25%.
These benchmarks remain estimates. For a reliable assessment, review local comparables and request a property valuation from a professional.
Value drivers: capital gain on a house with a garden and effects on the sale price
Buyers are often willing to pay a higher price for outdoor space that meets real needs. The uses are varied: leisure, a vegetable patch, a play area, an entertaining space or parking.
Expansion potential also affects value. Building footprint and buildable surface determine whether an extension such as a veranda or an additional bedroom is feasible.
Outbuildings, a garden shed or a pool house add functions and reassure families. A garage or private parking is an asset in many areas.
Three buyer profiles illustrate these expectations: families look for space and safety, remote workers value a fitted outdoor corner, and rental investors seek better rental profitability or a more attractive property for seasonal rental.
Overall, property value depends on a combination of technical criteria such as surface area, access and planning rules, and perceived comfort factors such as privacy and landscaping quality, which influence the buying decision.
Numerical indicators and benchmarks: percentage of added value and market comparisons for a house with a garden
Cautious benchmarks: small undeveloped garden → +5%. Maintained garden → +10–15%. Large landscaped plot in a high-demand area → +15–25%.
These ranges vary greatly depending on the city, neighborhood and local supply. In high-demand areas, market pressure can amplify real estate added value. In less dynamic areas, the effect remains more moderate.
Mini case study: Scenario: a 100 m² house on the outskirts of Toulouse. Median price without a garden: €2,500/m² → value = €250,000. Adding a private, well-designed 400 m² garden: +10% → value ≈ €275,000 (+€25,000). Cost of standard landscaping: €8,000 → net gain ≈ €17,000.
To refine these benchmarks, consult notarial databases, INSEE, local observatories and local comparables.
Finally, a house valuation with a garden carried out by a local real estate advisor remains the most reliable method for quantifying the added value in your area.
Types of outdoor spaces and their influence: private garden, terrace and balcony
Different types of outdoor space have different impacts on value. A large plot offers building potential and multiple uses. A terrace or balcony is especially appealing in urban environments.
Plot size and exposure, especially a south-facing orientation, are key criteria. Lack of overlooking neighbors and garden privacy further enhance attractiveness.
Planning constraints, particularly local urban planning regulations, or condominium rules for a rooftop terrace, may limit some developments. Still, a well-presented outdoor space remains in strong demand.
Advice by format: for a small garden, focus on outdoor home staging with lawn, planters and exterior lighting. For a large plot, structure the space into zones: vegetable garden, orchard, relaxation area and parking.
In urban areas, a wooden terrace or high-quality rooftop terrace adds a perception of useful living space. Maintenance is also often lower than for a large garden.
Large plot vs small garden: strengths, limitations and added value for a house with a large plot or small garden
A large plot allows for an in-ground pool, outbuildings, a garage or a possible extension. But it requires more maintenance and may increase property tax.
A small garden appeals because of its simplicity. It requires less upkeep and can be enhanced quickly through affordable improvements.
Priority interventions depending on budget: €0–2k → cleaning, mowing, hedge trimming. €2–8k → paving, planting, local irrigation. More than €8k → full landscaping, fencing, automatic watering.
Before making any investment on a large plot, check boundary lines and the cadastral plan to secure the available surface area and building footprint potential.
Terrace, balcony and rooftop terrace: how a terrace increases the value of an apartment or house
A terrace or balcony acts as an extension of the home. It provides usable space without the constraints of a full garden.
Points to assess: size, privacy, materials such as wooden decking, paving or terrace tiling, and outdoor lighting.
Check compliance with condominium rules and local planning regulations before adding a pergola or shelter. For presentation, choose compact furniture and structured planters.
Specific outdoor features: swimming pool, pergola, outbuildings and their added value
Specific features provide sought-after benefits, but their profitability depends on the local market. An in-ground pool has significant value in the South or in tourist areas. It may be less appreciated elsewhere.
Useful developments include pergolas, whether simple or bioclimatic, pool houses, garden sheds, garages and other outbuildings.
Each feature involves costs, regulatory requirements and maintenance constraints. Request several landscaping quotes and verify local demand before investing.
Swimming pool (in-ground / above-ground): cost, regulations and impact on house value
Cost ranges: an above-ground pool from a few hundred euros to €3–6k. An in-ground pool: €15k to €60k depending on size and options.
General rules: prior declaration of works is often required above 10 m². A building permit may be needed depending on local planning regulations or if the footprint exceeds certain thresholds. Always check the local planning rules.
French swimming pool safety law requires protective devices such as barriers, alarms or covers. Refer to the official legal text for the applicable obligations.
Plan for swimming pool insurance and check the situation in flood-prone areas. Development tax may also apply depending on the work and the municipality.
Pergola, garden shed, garage and pool house: value enhancement, depreciation and buyer appeal
Average indicative costs: simple pergola €1–4k. Bioclimatic pergola €6–20k. Garden shed €500–6k. Garage €6–20k depending on the structure.
The quality of materials and workmanship determines how much value is recovered. Favor durable and attractive solutions to maximize payback.
Some shelters trigger prior declaration requirements depending on their size and local planning rules. For furnished rentals, a pool house or converted garage may improve rental profitability.
Costs, maintenance and taxation of a garden: garden improvement costs and ongoing expenses
A garden involves upfront costs such as landscaping, fencing, automatic irrigation and planting, as well as recurring expenses such as mowing, pruning and pool maintenance.
Practical ranges: simple landscaping €1,500–5,000. Full landscaping €8,000–25,000. Automatic irrigation €1,200–4,000. Annual pruning €200–800.
Taxation: major improvements may trigger development tax and affect property tax through the cadastral rental value. Capital gains tax applies on resale except for a primary residence.
Before undertaking expensive work, consult a notary or the official French tax website to check the current rules.
To reduce costs, favor a sustainable garden, water-saving solutions and a suitable irrigation system.
Improvement and maintenance budget: average cost for a garden
Prioritize according to your goal: sell quickly → small works €0–2k. Maximize the price → medium investment €2–8k. Full transformation → more than €8k.
Examples of profitable improvements: a neat lawn, a planted hedge, a practical path, outdoor lighting and staging for visits.
Request several landscaper quotes and compare material costs before starting the work.
Taxes and taxation: property tax, development tax and capital gains related to outdoor space
The work may trigger development tax. Some constructions modify the cadastral rental value and property tax.
Capital gains on resale are taxable except for the primary residence. For precise advice, consult a notary or the official tax website.
Avoid decisions based only on general tax estimates. Each case deserves a personalized review.
ROI and profitability: comparing cost and value for resale and rental
Return on investment remains simple to calculate: (expected gain – investment cost) / investment cost.
An investment of €10k that creates €15k in value represents an ROI of 50%. Location and execution quality strongly influence the result.
For rentals, a landscaped garden may justify rent increases of around +5–15% depending on the region and the features included, such as a pool or pergola.
Always include recurring costs such as maintenance and home insurance in your calculations, and compare your assumptions with local comparables.
Calculating the profitability of a house for sale with a garden: landscaping investment vs expected added value on resale
Practical formula: ROI = (Expected added value – Investment cost) / Investment cost.
Quick scenarios: pergola €6k → +€8k in value. Automatic irrigation €2k → +€2–3k. Landscaped garden €12k → +€15–20k depending on the area.
The factors that support profitability are location, low annual maintenance costs, durable materials and consistency with the local market.
Impact on rental profitability: increased rents, seasonality and appeal for tenants
In long-term rental, a family-friendly garden increases attractiveness and lease duration. In seasonal rental, the added value may be higher, but seasonal.
Indicative range: rents increased by +5–15% depending on the quality of the garden and its features.
Keep obligations in mind: maintenance, pool safety, insurance and a clear mention of charges in the lease to avoid disputes.
How to design your outdoor space depending on the specific case
Design depends on the goal: personal enjoyment, sale optimization or improved rental profitability.
Prioritize improvements with high added value and low cost: neat fencing, a well-kept lawn, a usable path and lighting.
Adapt the project to local constraints such as flood-prone areas or easements, and ask a landscaper for a consistent plan.
Here is a simple checklist for buyer visits: mowed lawn, trimmed hedges, usable access, ambient lighting and a fitted dining area.
Strategies for a small garden or courtyard to maximize value
Low-budget solutions: planters, vertical trellises, synthetic lawn, low hedges, LED lighting and compact furniture.
Indicative budget: €500–3,000. Expected impact: better first impression and faster sale.
Outdoor home staging with before-and-after photos and clearly defined zones helps buyers picture themselves in the space more quickly.
Developments for a large plot: landscaped garden, vegetable patch, orchard
For a large plot, define zones for leisure, production and parking, and include mature trees for landscape value.
Indicative costs: full landscaping €8,000–25,000. Planting mature trees costs more but adds significant long-term value.
Sustainable approaches such as permaculture and ecological gardening reduce maintenance costs and appeal to buyers who value biodiversity.
Regulations, risks and points to watch: permits, planning and garden safety
Check all formalities: building permits or prior declarations for extensions, pools or shelters. Review the local planning rules and easements.
Check boundary lines, the cadastral plan and any required diagnostics such as termites or soil. Being in a flood-prone area affects design choices.
Comply with pool safety standards and home insurance requirements. These risks can be managed with proper support.
To secure the process, contact a local real estate advisor and a notary. Contact your Optimhome advisor for a local review and tailored support.
Contact your local Optimhome real estate advisor to value your house with a garden
Optimhome advisors have detailed knowledge of local markets. They have access to local comparables and property expertise tools to professionally value a house with a garden using recent data from your municipality.
Your Optimhome advisor offers you a free outdoor audit and an accurate valuation.
Contact your Optimhome advisor to arrange a visit and receive a sales strategy tailored to your objective.
Conclusion
Surface area, exposure, maintenance condition and features such as a swimming pool or pergola are the main value drivers.
A small, well-presented garden increases attractiveness. A large plot offers building potential but requires a maintenance budget.
Always assess return on investment before starting work: some interventions are quickly profitable, while others pay off over the long term.
Comply with regulations and check the tax impact with a notary or on the official tax website.
To sell quickly, prioritize fast and low-cost improvements such as lawn care, fencing and lighting. To maximize the price, invest in more substantial landscaping and features consistent with the local market.
Rental profitability can be improved by a landscaped garden. Anticipate maintenance and legal obligations.
For a precise valuation, a sales strategy and a prioritized improvement plan, contact your local Optimhome real estate advisor.
FAQ
What is the average percentage of added value for a house with a garden on resale?
Short answer: On average, a well-maintained garden can add between 5% and 20% to a property’s value depending on location and landscaping quality. These ranges vary greatly locally, so request a valuation from an Optimhome advisor.
How much does it cost to improve a small garden or terrace, and what added value can be expected?
Short answer: Indicative budget: €1,500 to €8,000 for a simple to mid-range improvement with planting, wooden decking and minimal irrigation. Estimated added value: often +5% to +10% if the presentation is consistent with the local market.
Does a swimming pool always increase the value of a house with a garden?
Short answer: Not always. A pool increases attractiveness in warm or tourist areas but may be a drawback in wetter regions or for buyers who are reluctant. Its impact depends on the local market and the maintenance condition.
What additional taxes and costs should be expected for a garden?
Short answer: Major outdoor improvements may trigger development tax and influence property tax. Capital gains on resale are taxable except for the primary residence. Check the current rules with a notary or on the official tax website.
How should you prepare your garden for sale?
Short answer: Prioritize cleanliness, a mowed lawn, trimmed hedges, good lighting, minimal outdoor furniture and clearly defined zones for dining or relaxing. High-return investments include neat fencing, a usable path, lighting and professional cleaning. Ask your Optimhome advisor for a checklist.
How do you estimate the price of a house with a garden?
Short answer: Valuation is based on comparison with similar properties recently sold in the same area. You need to take into account plot size, exposure, maintenance condition and outdoor features such as a terrace, pool or outbuildings. A local real estate advisor refines the value according to the market and demand.
What do you call a house with a garden?
Short answer: There is no single official term. It is generally called a house with a garden or a detached house with land. Depending on the standing or size, terms such as townhouse with a garden, family home with land or property with a park may also be used.
Can you build a house with €120,000?
Short answer: Yes, but it depends on the project. This budget may be enough for a small house or a cost-effective build excluding land, with standard features and limited floor area. The cost of the land, utilities and outdoor development, including the garden, must be added to assess the total budget.
What is the price of a single-storey house?
Short answer: The price varies depending on surface area, region and specifications. On average, a single-storey house costs between €1,200 and €2,500 per m² excluding land. Outdoor developments such as the garden, terrace or garage can increase the total budget.
How do you draw a house with a garden?
Short answer: Start by defining the layout on the plot while respecting local planning rules and orientation such as sunlight and access. Divide the space between the house, garden, parking and outdoor living areas. A simple plan or design software can help visualize the volumes before consulting a professional.
Can you rent out an apartment or house with a garden?
Short answer: Yes, a property with a garden can be rented out either as a long-term or seasonal rental. The garden is a differentiating asset that can justify a higher rent. It is important to specify maintenance conditions and responsibilities in the lease to avoid disputes.
Author :
Fabrice DOBROWOLSKI - Optimhome Network Development Director
Optimhome offers you personalized support for your real estate project. Benefit from all my advice, based on several years of experience, to ensure the success of your project.
